- UNIVERSiTE DE SHERBROOKE

:re de recherche erl drnenagement %ionat

CENTRE DE RECHERCHE EN AMENAGEMENT REGIONAL U N I V E R S I T E DE SHERBROOKE

R E P O R T !IN T H E EVALUATI?M C F F L O n D DAYAGES I N 1976 P T D I F F E R E N T \IATER L E V E L S .

O F T H E 3 I C H E L I E U R I V E R A?ID T V E B A I E M I S S I S Q U O I . U P P E R R I C H E L I E U , QUEBEC, CANAC.4. WITH P R O J E C T I O N S FOR T H E P E R I O D

1976 -2030

REPO'RT S U B M I T T E D

March 31 , 1977

1

Acknowl edgements

The form and depth of th is study would not have been possible without

the cooperati on and advice of numerous individuals and organi zations .

We would l ike to express a l l our gratitude to the members of the Inter-

national Champlain-Richel ieu Board ( I . C . R.B. ) Net Benefits Commi t t ee ,

in particular to Messrs. J.P. Reynolds and D. Bjonback of Environment-

Canada, Messrs. J. Theriault, J . Gadbois and S. Jack of the Government

of Quebec, to Messrs. S. Tosi and R. Sangos of the U.S. Corps of Engi-

neers and to Professor A. Gilbert of the University of Vermont, for

thei r advice and active cooperati on throughout the who1 e project .

Special mention should be made of the assistance provided by the repre-

sentatives of the different public and private organizations directly

or indirectly concerned by the subject in the study area who have con-

tributed very useful information material on various aspects of the '

problem.

We are f inally deeply grateful to a l l the people in the study area who

have responded to our detai 1 ed ques tionnai res and requests for i nfor-

mation. Tkei r participation and cooperation have been essential to

the concl usion of this project.

1 . \ 1 Lw&. Claude Greff ard W3&- ~ e z r a n d J . Rivard

March .31 , 1977.

The P r o j e c t Study Team

P r o j e c t coordinators : Claude Greffard Bertrand J . Rivard

F ie ld Survey Team: Naji Achkar Yves Comtois J u l e s Dufort

- C h r i s t i a n Prevost

Data computations : Yves Comtoi s C h r i s t i a n Prevost

Cartography : Denise C1 aveau Mi chel i ne L. Provencher

Dactyl ography: Diane Lareau L i l y Lecours L i nda P r o v e n ~ a l

Trans1 a t i on Oleg Stanek

CONTENTS

i.

Paqe

SECTION 1 .O: THE TERMS OF REFERENCE

SECTION 2.0: THE UPPER RICHELIEU FLOOD PROBLEM

2.1 : H i s t o r i c a l background

2.2: Remedial works 7

2.3: The 1976 f l o o d 8

SECTION 3.0: THE STUDY AREA 13

3.1 : The R i chel i eu R i ve r bas i n/Soci o-economi c 13 o u t l i n e

3.2: The study area: Zones o f ana lys is and 25 muni c i pa l i ti es i nvol ved

SECTION 4.0: THE GENERAL APPROACH AND SCHEDULE 7 2

4.1 : The general approach 7 2

4.2: The p r o j e c t schedule 72

4.3: The surveys : speci f i c approaches used 102

SECTION 5.0: THE 1976 FLOOD DAMAGES 119

5.1 : The 1976 permanent r e s i d e n t i a l sec to r damages 119

5.2: The 1976 secondary r e s i den t i a1 sec to r damages 125

5.3: The 1976 i n d u s t r i a l and commercial sec to r 131 damages

5.4: The 1976 a g r i c u l t u r a l sec to r damages 137

5.5: The 1976 p u b l i c u t i l i t i e s sec to r damages 143

5.6 : The rec rea t iona l va l ue 149

i i .

5.7: The 1976 t o t a l and s e c t o r i a l stage/damage 154 curves

SECTION 6.0: THE 1976-2030 PROJECTIONS 171

6.1 : The typ ica l f lood stageldamage curve 171

6 2 The 1976 average annual damages 180

6.3: The 1976-2030 average annual damages 182

SECTION 7.0: GENERAL CONCLUSION

Bibliography

Appendi ces

LIST OF TABLES

Table 2.3. Upper-Ri chel ieu/l eve1 s of reference and 9 di s charges

Table 3.1. The Ri chel i eu River Basi n/demographi cal 15 evol uti on

Table 4.2.2.A. Zone/Richel ieu (blest) : Number of samples 7 8 by sector and by municipality @ R.F.

Table 4.2.2.B. Zone/Richelieu (West): Number of samples 79 by sector and municipality 8 R.F. + 1 '

Table 4.2.2.C. Zone/Richel ieu (East) : Number of samples 8 5 by sector and municipality 8 R.F.

Table 4.2.2.D. Zone/Richelieu (East): Number of samples 86 by sector and municipality @ R.F. c 1 '

Table 4.2.2:E. Zone/Baie Missisquoi : Number of samples 92 by sector and municipality @ R.F.

Table 4.2.2.F. Zone/Baie Missisquoi : Number of samples 93 by sector and municipal i ty @ R. F. - 1 '

Table 5.1 .A . Zone/Richel i eu (West) : Computation I11 120 Total damages/permanent resi dential sector (1976)

Table 5.1.B. Zone/Richelieu (East): Computation I11 121 Total damages/permanent res i den t i a1 sector (1 976)

Table 5.1.C. Zone/Baie Missisquoi: Computation I11 122 Total damages/permanent residenti a1 sector (1976)

Table 5.1.D. Study area: Computation 111. Total da- 123 mages/permanent residenti a1 sector (1 976)

Tab1 e 5.2.A. Zone/Richel ieu (West) : Computation I I 1 126 Total damages/secondary res i denti a1 sector ( 1976)

Table5.2.B. Zone/Richelieu (East): Computation 111 127 Total damages/secondary resi denti a1 sector (1976)

i i .

L i s t of Tables (cont . )

Table 5.2. C . ZoneIBaie Mi s s i squoi : Computation 111, 128 Total damages/secondary res iden t i a1 s e c t o r (1 976)

Table 5.2.D. Study area: Computation 111. Tota! da- 129 mages/secondary r e s i den ti a1 s e c t o r (1 976)

Table 5.3.A. Zone/Richel ieu (West) : Computation I I1 . 132 Total damages/ I ndus tri a1 and comerci a1 s e c t o r (1976)

Table 5.3.B. Zone/Richel ieu (Eas t ) : Computation I11 133, Total damagesli ndus tri a1 and commerci a1 s e c t o r (1 976)

d

Table 5.3. C. Zone/Baie Missisquoi : Computation I11 1 34 Total damaqes/i ndus tr i a1 and commerci a1 ' s e c t o r (1976)

Table 5.3.D. Study .area: Computation I11 1 35 Total damages/i ndus tri a1 and commerci a1 s e c t o r (1976)

Table 5.4.A. Zone/Richel ieu (West) : Computation I11 1 38 Total damages/agricul t u r a l s e c t o r (1976)

Table 5.4.8. ZoneIRichel ieu (Eas t ) : Computation I11 1 39 Total damageslagri cul t u r a l s e c t o r (1 976)

Table 5.4.C. ZoneIBaie Missisquoi: Computation I11 1-4G Total damages/agri cul t u r a l s e c t o r (1976)

Table5.4.D. S tudya rea : Computation111 T o t a l d a - 141 mages/agri cul t u r a l s e c t o r (1976)

Table 5.5.A. Zone/Richel i eu (West) : Computation I I1 1 44 Total damages/sector/publ i c u t i 1 i t i e s (1 976)

Table 5.5.8. Zone/Richeli eu (Eas t ) : Computation I I1 145 Total damages/sector of publ i c u t i 1 i t i e s (1 976)

Table 5.5. C. Zone/Baie Missisquoi : Computation I11 7 46 Total damages/sector of publ i c u t i 1 i t i es ( 1976)

i i i .

List of Tables (con t . )

Table 5.5.D. Study a rea : Computation I11 Total da- 147 mages/publ i c u t i 1 i t i e s (1 976)

Table 5.7.A. (1 ) Zone/Ri chel ieu (West) : Computation I11 155 Total damages/Type of c o s t (1976) I

Table 5.7.A. (2 ) ~ o n e / ~ i chel ieu (West) : Computation I1 I 156 Total damages/acti v i t y s e c t o r (1 976)

Table 5.7.B. (1) Zone/Richelieu (East ) : Computation I11 159 Total damages/type of cos t (1 976)

Table 5.7.0. ( 2 ) Zone/Richel i eu (Eas t ) : Computation I11 160 Total damages/acti vi t y s e c t o r (1976)

Tab1 e 5.7. C. ( I ) Zone/Baie Mi ssi squci : Computation I11 163 Total damages/type of c o s t (1 976)

Table 5.7. C. ( 2 ) Zone/Baie Missisquoi : Computation 111 1 64 Total damages/activi t y s e c t o r (1 976)

Table 5.7.D. ( 1 ) Study area: Computation I11 Total da- 167 mages/type of cos t (1976)

Table 5.7.D.(2) Study area: Computation I11 Total da- mages/acti v i t y s e c t o r (1 976)

Table 6.1 Study area: Total damages Typical Flood @ R. F. (1976)

Table 6.1 .A. Study area: Typical f lood Total dama- ges/type of c o s t (1 976)

Table 6.1.B. Study area: Typical f lood Total dama- 178 ges /ac t iv i t y s e c t o r (1976)

Table 6.2.A. Total average annual damages Type of 180 c o s t (1976)

Table 6.2.B. Total average annual damages Act ivi ty 181 s ec to r (1 976)

Table 6.3.1.2. A1 t e r n a t i v e #l /Sector i a1 growth f ac to r s / 191 1976-2030 project ions

Table 6.3.1.3. A1 t e r n a t i v e #l/Average annual damages 192 1976-2030

Table 6.3.2.2. (A) A1 t e rna t i ve 2(A) : Sector i a1 growth fac- 199 tors/1976-2030 p ro j ec t i ons

i v .

L i s t o f Tables (cont . )

Table 6.3.2.3. (A) A1 t e r n a t i v e 2(A)/Average annual damages 200 1976-2030

Table 6.3.2.2. (8) A1 t e r n a t i v e 2(B) /Sector i a1 growth fac- 206 tors11 376-2030 p ro j e c t i ons

Table 6.3.2.3. ( A ) A1 t e r n a t i v e 2(B)/Average annual damages 20 7 1976-2030 p ro j ec t i ons

LIST OF FIGURES

Figure. 2.1 .A.

F igu re 2.1 .B.

F igure 2.3.A.

F igu re 2 .3

F igure 3.1

F igure 3.2.1.

F igu re 3.2.2.A.

F igu re 3.2.2.C.

F igure 3.2.2.D.

F igure 3.2.2.E.&F

Figure 3.2.2.6.

F igure 3.2.2.H.

F igu re 3.2 .2 .1 .

Figure 3.2.2.5.

F igure 3.2.2.K.

F igure 3.2.2.L.

Longi tud ina l s e c t i o n o f t h e Richel i eu River

The Lake Champlain and R i che l i e u R ive r

The 1976 Fl ood/Peri od and Dura t ion

The 1976 Flood/Water Levels and Reference S t a - t i o n s

The R i c h e l i e u River Basin

The Study Area/Fluni ci p a l i t i es and Zones of a n a l y s i s

St-Jean/Flooded Zone and A g r i c u l t u r a l Land Use

St-Bl a i se/Flooded Zone and Agri cu l t u r a l Land Use

St-Paul -de-1 ' I1 e-aux-Noi x/Flooded Zone and Agri cu l t u r a l Land Use

Notre-Dame-de-klont-Carmel /Fl ooded Zone and Agri cu l t u r a l Land Use

I b e r v i l l e & St-Athanase Flooded Zone and Agri- c u l t u r a l Land Use

Ste-Anne-de-Sabrevoi s /F looded Zone and Agri c u l - t u r a l Land Use

Henryvi 1 1 e /F l ooded Zone and Agri cu l t u r a l Land Use

St-Thomas/Flooded Zone and A g r i c u l t u r a l Land Use

St-Georges de C l a r encev i 11 e/Flooded Zone and Agri cu l t u r a l Land Use

St-SGbas ti en/Fl ooded Zone and Agri cu l t u r a l Land Use

Veni se-en-QuGbec/Fl ooded Zone and Agri cu l t u r a l Land Use

Page

5

6

10

11

i i . L i s t o f F igures ( c o n t . )

F igure 3 .2 .2 .M. St-Pi erre-de-VCronne/Fl ooded Zone and Agri cu l - 66 t u r a l Land Use

F igu re 3.2.2 .N .&O. St-Armand-Oues t and Phi 1 i psburg/Fl ooded Zone 6 9 and Agri cu l t u r a l Land Use

Figure 4.2.2.A. S t - J ean ILoca t i on o f Samples 80

Figure 4.2.2.B. S t -B la i s e /Loca t ion o f Samples 81

F igure 4.2.2.C. St-Paul -de-1' I le-aux-Noix/Locat ion of Samples - 82

Figu re 4.2.2. D. Notre-Dame-du-Mont-Carmel /Loca t ion of Samples 83

F igu re 4.2.2 .E. &F. St-Athanase and I be rv i 11 e /Loca t ion of Sampl es 87

F igure 4.2.2. G. Ste-Anne-de-Sahrevois/Location of Samples 88

Figure 4.2.2.H. Henryvi l l e / L o c a t i o n o f Samples 89

Figu re 4.2.2. I . St-Thomas (Noyan)/Locati on o f Samples 90

Figure 4.2.2.5. St-Georges-de-Cl a rencevi 11 e /Loca t i on o f Samples 94

F igure 4.2.2.K. S t -Sebas t i en /Loca t ion o f Samples Y 5

Figure 4.2.2.L. Venise-en-QuGbec/Location of Samples 96

Figure 4.2.2.M. St-Pierre-de-Veronne/Location of Samples 9 7

F igure 4.2.2.N.&0. St-Armand-Ouest and Phi 1 i p sbu rg jLoca t ion o f Sam- 9 8 pl es

Figure 5 .1 . S t a g e / Damage Curve/Resident i a1 s e c t o r (1976) 124

Figure 5.2. S t a g e / Damage Curve/Secondary Resi den t i a1 1 30 S e c t o r (1976)

F igure 5.3. S t a g e / Damage Curve11 ndus tri a1 and Commerci a1 136 S e c t o r (1 976)

F igure 5.4. S t a g e /Damage Curve/Agri c u l t u r a l S e c t o r 142

F igure 5.5. S t a g e /Damage Curve /Publ ic Uti 1 i t i es S e c t o r 148 (1976)

F igu re 5 .7 .A(1) Zone R i che l i eu (Wes t)/Stage/Damage curves by 157 type of c o s t (1976)

F igure 5.7.A(2) Zone R i che l i e u (West) /Stage/Damage cu rves by 158 a c t i v i t y s e c t o r (1 976)

Figure 5.7.B(1)

Figure 5.7.B(2)

Figure 5.7.C(1)

Figure 5.7. C(2)

Figure 5.7.D(1)

Figure 5.7..D(2)

Figure 6.1

Figure 6.1 . A

Figure 6.1.B

i i i .

List o f ' f i g u r e s (cont . )

Zone R i chel i eu (Eas t)/Stage/Damage curves 161 by type o f c o s t (1976)

Zone R i chel ieu (Eas t)/Stage/Damage curves 162 by a c t i v i t y s e c t o r (1 976)

Zone Bai e Mi s s i squoi /Stage/Damage curves 165 by type o f c o s t (1976)

Zone Baie Mi s s i i q u o i /Stage/Damage curves 166 by a c t i v i t y s e c t o r (1976)

Study area/Stage/Damage curves by t y p e of 169 c o s t (1976)

Study area/Stage/Damage curves by a c t i v i t y 170 s e c t o r (1976)

The typ ica l f lood/per iod and dura t ion 172

~~~i ca l flood/Stage/Darnage curves by type 177 . o f c o s t (1976)

Typi cal flood/Stage/Damage curves by a c t i - 179. vi t y s e c t o r (1 976)

LIST OF APPENDICES Page

Appendix I THE QUESTIONNAIRES 1

Appepdix 1-A Questionnai r e A/The r e s i d e n t i a l sec to r 1

Appendix 1-B Quest ionnai re B/The commerci a1 & i ndus t r i a1 5 sec to r

Appendix 1-C Quest ionnai re C/The a g r i c u l t u r a l sec to r 11

Appendix 1-D Ques t i onna i r e D/The pub1 i c u ti 1 i ti es sec to r 18,

Appendix 1-E Ques t i onna i r e E/The rec rea t iona l va l ue 21

Appendix 2 INDEX AND RESULTS COMPILATION FORMS 2 5

Appendix 2 -A( l ) Index/damage eval ua t ion / res i den t i a1 sec to r 25

Appendix 2-A(2) Computation form I/permanent r e s i d e n t i a l 28 sec to r .

Appendix 2-A(3) Computation form II/permanent r e s i d e n t i a l 34 sec to r

Appendix 2-A(4) Computation form I/secondary r e s i den t i a1 37 sec to r

Appendix 2-A(5) - Computation form II /secondary r e s i d e n t i a1 43 sec to r

Appendix 2-B Computation Form I & I I / I n d u s t r i a l & commer- 46 c ia1 sec to r

Appendix 2-C(1) Indexldamage eval ua t ion /agr i cu l t u r a l sec to r 5 1

Appendix 2-C(2) Computation form I / a g r i cu l t u r a l sec to r 54

Appendix 2-C(3) Computation form I I / a g r i c u l t u r a l sec to r 63

Appendix 2-D( l ) Index/damage eval uat ion/publ i c u t i 1 i ti es 70

Appendix 2 - ~ ( 2 ) Computation form I & I I/publ i c u t i 1 i ti es 74

Appendix 3 LIST OF CONSULTED PERSONS

SECTION '1 .O: THE TERMS OF REFERENCE

SECTION 1.0: THE TERMS OF REFERENCE

Following the discussions and meetings held in March and April

1976, between the representatives of the International Champl ai n -

Richel ieu Board (I.C.R.B.) and those of the Centre de Recherche en

kenagement Regional (c.R.A.R.) of the Universi t e de Sherbrooke, an

agreement" ) was signed on June 8, 1976, between Supply and Ser-

vices Canada and the Universi t e de Sherbrooke. This agreement

stipulated the methods for carrying o u t a. study which would eva-

1 uate the damages of a physical and non-physical nature caused

by the flooding a t various water levels of the Richel ieu river and

Baie Missisquoi (section of the Upper Richelieu) in 1976, and which

would pr0jec.t costs and possible damages of a similar nature f.or

the period 1976-2030.

The principal terms of reference transmitted by the International

Champl ain-Ri chel ieu Board ( I . C. R.B. ) concerning the real ization

oT the required work during the period May 1976 - March 1977, can be summed up in the following manner:

- A representative sample was t o be taken from each of the Upper Ri-

chel ieu and Baie Missisquoi municipal i t i e s concerned and f ie ld sur- ,

veys were to be made, t o evaluate the principal damages sustained

in 1976 by residential , commercial , industrial and agri cul tural pro-

( ) Supply and Services Canada, Contract number: OSU76-00028

perty both public and private, as well as by public u t i l i t i e s as

a resul t of the various water 1 evels reached by the Rich'el ieu

River and Baie Missisquoi in 1976.

-An assessment of total damages of a physical and non physical

nature caused by the 1976 floods was t o be made with reference t o

each concerned muni ci pal i ty taking in t o account the various f i el d

surveys and analysis, and t o the various property types and agreed

sectors of act ivi ty as we1 1 as t o the various water 1 evels invol-

ved(2); projections of costs for these same damages for the pe-

ri'od 1976-2030 were to be plotted.

-A submission on March 31, 1977 in twenty copies, ten in English and

ten in French, of a final report comprising a l l the results ob-

tained.

The present document t r i es t o adhere t o the requirements of such re-

ference terms and presents a l l the results as well as a description

of the various approaches used during the different real ization

stages of th is project.

(2) The two following reference flood levels (Re: R . F . ) were im- plemented in the present study:

R.F. : The level of 101'.51 (U.S.G.S.) @ Rouses Point, N . Y . R .F . + 1 ' : The level of 10Z1.51 (U.S.G.S.) @ Rouses Point, N . Y .

SECTION 2.0: THE UPPER RICHELIEU FLOOD PROBLEM

2 . 1 H i s t o r i c a l background

2.2: Remedial works . . .

2.3: The 1976 f l o o d . .

SECTION 2.0: THE UPPER RICHELIEU FLOOD PROBI,EM

2.1 : Hi stori backaround

Lake Champlain lying on the Northeast border of Vermont and the

southeast border of ~uebec, i s the sixth largest lake in the Uni-

ted States. I t i s approximately 107 miles long with a maximum

width of 12 m i 1 es and a total water surface of 490 square mi 1 es,

17 of which are in Quebec.. The Richelieu River takes form a t the

outlet of Lake Champlain near Rouses Point, New-York, and flows

i n a norti~erlv d i rection a distance o f abou t 90 mi 1 es to Sore1 ,

Quebec where i t empties into the Saint-Lawrence River.

The outlet of Lake Champlai n vi a the Richel ieu River i s regulated

by a natural barrier formed by rocky shoals located a t Saint-Jean,

Quebec. Between Rouses Point and this natural barrier, the ara -

dient of the water surface rarely exceeds one foot; the capacity

of evacuation of the river i s thus considerably reduced when the

water discharge i s high. (Re: Figure 2.1(A)).

The watershed area of Lake Champlain and the Richelieu River has

a total surface of 9,920 square miles, 7,760 in the United States

and 1,460 in Canada. The basin, in the states of Vermont and

New-York forms a region generally mountainous and covered with fo-

rests, whereas in Ouebec the river flows through agricultural low-

lands. The mean annual runoff i s ap~roximately 22 inches which

amounts t o 63% of total precipitation. The level of Lake Champlain

has changed from a low point of 91.9 feet above sea level t o a

high point of 101.5 feet. The discharge of the Richelieu River

has changed, for i t s part, from'a minimum of 1,410 cubic feet per

second t o a maximum of 43,700 cubic feet per second. The mean long-

term discharge i s 71,000 cubic feet/second: The damages provoked

by floods senerally occur in the vicinity of Lake Champlain and the

Upper Richel ieu when the levels of Lake Champlai n exceed an eleva-

tion of 98 fe,et above sea level .. (1

In recent ysars, the high water levels of Lake Champlain and the

Richel ieu River have caused considerable damage t o property, provo-

king numerous compl aints and claims from the affected citizens .

High flood levels have caused considerable damages particularly in

Quebec where numerous farms have been affected by floods or by re-

duced drainage efficiency. On b o t h shores of the Richelieu River,

between Lake Champlain and St-Jean, a one t o 3 mile wide s t r ip of

land i s flooded when the water levels of the lake are h i g h . Between

the river and Baie Missi squoi, interior lands are generally flooded

up t o a depth of five m i 1 es.

Source: "Preliminary report on the regulation of Richeli eu Ri ver and Lake Champ1 ai n u , International Joint Commission Canada & United States, March 1975.

figure 2 .I A

~ i s t a n c e a part ic do I'embouchure en k m

Source: C a r t e no. 9 , Documentaire sur l e baasin de l a r i v i C r e R i c h e l i e u , Environnement Canada 1976 / Environment Canada. Map no. 9

Centre de recherche en amhagement r&&nal

figure 2.1 B

BASSIN LAC CHA MPLAIN ET RlVlERE RICHELIEU BASIN/ AKE CHAMPLAIN AND RlCHELlEU RIVER

Echel le : ~ i l l e s

Source : C o m m i s s i o n M i x t e I n t e r n a t i o n a l J o i n t

Centre de recherche en amenagement regional

UNIVERSIT~ DE SHERBROOKE

2 .2 : Remedial works -

o n June 10, 1937, the Canada-United States International Joint Com-

mission, approved the construction and maintenance by Canada of

various protective works on the Richel ieu. As a resul t , a dam was

built on Fryers island in 1939; however, two other measures agreed

t o by the Commission,, construction of dikes in the vicinity of the

dam and excavation of the rocky shoals a t St-Jean, were never exe-

cuted. I t was only in 1968, a t the beginning of the actual period

of highwater, t h a t the public began t o exercise serious pressure

and that the corresponding governments considered the compl e t i on of

the projected works.

On March 29, 1973, the Governments of Canada and the United States

conferred a mandate on the International Joint Commission by virtue

of ar t ic le IX of the Boundary Waters Treaty of 1909, t o investigate

and report on the feasibi1it.y and desirability of regulation of the

waters of the Richelieu River. The Commission created the Interna-

tional Champlain-Richel ieu Engineering Board which submitted i t s re-

port in September 1974. Public hearings were la ter conducted t o

ascertain the reaction of the ueople concerned by this report.

On the basis of the information contained in the r e ~ o r t of the Interna-

tional Champlain-Richel ieu Engineering Board and the testimony received

during related public hearings, the International Joint Commi ssion

arrived a t the conclusion that i t could not complete the enquiry

undertaken according t o the mandate entrusted to i t before ob-

taining additional information re1 ated to the effects of the re-

gulatory measures on the environment and the economy.

2.3: The 1976 flood

The 1976 flood, the object of the present investigation, was

the highest water level registered since 1872 to date in the area

of the Upper Richeli eu. This water level i s considered exceptional

as fa r as duration and period i s concerned, when compared with the

1971 and 1972 flood (Re: Figure 2.3.A), and i t yields for each of /

the thi rteen (13) stations of reference located wi thi n the quebec

flooded area, the following reference levels and discharges (Re: Ta-

ble 2.3, Figure 2.3).

THE UPPER RICHELIEU

LEVELS OF REFERENCE. A N D DISCHARGES

Distance from Levels cvi thout damage Flood levels 1976 (1 Station Fryer's Is- Discharge: 25,000 cu- Discharge: 41,000 cu-

land ( i n f ee t ) bi c fee t / s ec. bi c feet/sec.

* S t a t i o n a t thebordernearRouses Point, N.Y..

( 1 ) Levels of reference of the 1976 flood i n (Canadian datum)

( 2 ) This 101 ' .25 level, reached a t station $13, corresponds t o the re- ference level a t Rouses Point, namely 101 ' .51 ( u . s . G . ~ .)

figure 2.3

HAUT- RlCHELlEU /CRUES DE 1976 / NIVEAUX ET STATIONS DE REFERENCE

UPPER - RICHELIEU/1976 FLOOD/ WATER LEVELS AND REFERENCE STATIONS

Soure.: envaronn .m.n i C a n a d a 197(1 /~nvaronm.nr C a n a d a 1 9 7 0

I n l . r p r . t a t n o n : C . R . A . R 1 9 7 0

The reference level ( R . F. ) retained by the International Champ1 ain-

Richel ieu Board for the present study corresponds to the maximum

mean annual level reached by Lake Champlain a t Rouses Point on

April 5 , 1976 @ 101 l.51 (U.S.G.S. datum). 'Table 2.3 gives the ca-

nadian levels corresponding to th is level of reference for thirteen

(13) stations of reference situated in the study area. Figure 2.3

shows the location of these stations and delineates the flooded area

a t the level of reference ( R . F 1 ) and the level of reference + 1 '

(R.F. + 1 ' ) .

\

The assessment of physical and non physical damages resulting from

the 1976 flood a t these two ( 2 ) levels of reference, has been the

object of the following sections of th is report.

These 1976 results have been used la te r on t o construct the stage-damage

curves which have served as the basis for the establ ishment of the required

1976-2030 average annual damages.

SECTION 3.0: THE STUDY AREA

3.1: The R i c h e l i e u R i v e r b a s i n

3.2: The s tudy area: zones o f ana lys i s and m u n i c i p a l i t i e s i nvo l ved .

SECTION 3.0: THE STUDY AREA

3.1: The Riche l ieu River basin

Socio-economic o u t l i n e

- This b r i e f o u t l i n e sets f o r t h the p r i n c i p a l socio-economic charac-

t e r i s t i c s which descr ibe the present s i t u a t i o n o f the Richel i e u

River basin and draws upon avai 1 abl e demogra~hi c data, as

we l l as data on emplovment, urban izat ion, a g r i c u l t u r e and recrea-

( 1 1 t i o n t o advance c e r t a i n p ro jec t ions f o r the fu ture . \

The water resources o f the bas in are u t i l i z e d f o r the supply o f

households and i ndus t r i es as we l l as f o r a g r i c u l t u r a l and naviga- . I

t i o n a l purposes; morover water resources are imoortant f o r recrea-

t i o n and commercial and spo r t f i s h i n g . These var ious uses o f t e n

have unfavourable e f f e c t s on theaquat ic environment, mainly

when t he a c t i v i t i e s are concentrated i n the urban centers. The ra -

p i d development of the reg ion has increased the c o n f l i c t i n g demands

f o r t h i s resource and thus t he damage r e s u l t i n g from mutua l ly ex-

c l u s i v e uses o r simply an inadequate supply o f the resource i t s e l f .

Demographic perspectives

The bas in o f the Riche l ieu River comprises, e n t i r e l y o r i n p a r t , 10

count ies o f the admi n i s t r a t i v e reg ion o f Montreal ( req ion number'6)

namely: Brome, Vissisquoi , I b e r v i l l e , Saint-Jean, N a p i e r v i l l e , Cham-

(1 ) Re: B i b l iography

bly , VerchGres , Rouvi 11 e , Sai nt-Hyaci nthe and R i chel ieu .

T h e t o t a l population of these ten (10) count ies , which was 393,368

i n 1961 , w i 11 be approximately 759,443 persons i n 1986, thus pre-

sent ing a rea l increase of 93% over a period of 25 years . ble

f ind i n t a b l e #3.1, the demographic evolution by municipal count ies

f o r the years 1961 , 1966, 1971 and 1376, and t he demographical pers-

pecti ves f o r the years 1981 and 1986, according t o the project ions

of the Research Center f o r Urban and Regional Studies (Centre de Re-

cherche~ Urbaines e t Regionales , C.R. U.R.) of t he National I n s t i t u t e

f o r Sci en t i f i c Research ( I n s t i t u t National de 1 a Recherche Sci en t i f i - que, I.N.R.S.) (1972). In 1976, the population of t he basin of the

Richel ieu R i ver was approximately 601,014 persons represent ing approx-

imately 10% of the t o t a l population of Quebec (6,141,491 hab i t an t s ) .

Counties

TABLE 3.1

THE RICHELIEU RIVER BASIN DEMOGRAPHICAL EVOLUTIOii/MUNICIPAL COUNTIES

B rome 14,097

Missi squoi 29,526

Ibervi 1 1 e 18,080

Sai n t-Jean 38,470

Chambly 146,745

Rouvi 11 e 25,979

St-Hyaci nthe 44,993

Richel i eu 38,565

Napi e rv i 11 e 11,216 11,822 12,067 12,468 11,965 12,128

Total /bas i n 393,368 464,387 523,860 601,014 677,930 759,443

Total /Quebec 5,259,211 5,780,845 6,027,764 6,141,491

Source: ( 1 ) S t a t i s t i cs-Canada (1976, Census of Canada: Popul a t i on lp re l imi nary counts)

( 2 ) Centre de Recherches Urbaines e t Regionales (C.R. U. R . ). I n s t i t u t Natio- nal de l a Recherche Sc ien t i f ique (I.N.R.S.), Montreal 1972.

figure 3.1

BASSIN DE LA RlVlERE RlCHELlEU

THE RlCHELlEU RIVER BASIN

k ~ l o m b t r e s

- b o a a ~ n basln

--- cornto county

CO. ~ u n t t n g t o n l S t -Jean / I I

Canada Etats -Unts

Source: C a r t e 3 Documentaire sur I e bassin de I. r i v i e r e Riehelieu Enrironnement Canada 1976 Environmant Canada 1 9 7 6 l m a p 3

Centre de recherche en ambagement r6gional

lal UNNERSJTC 1976 DE SHERBROOKE -

Total emplo.yment, which was 99,594 i n 1961, w i l l probably reach

215,742 i n 1986, which represents a real inc rease of 117% over

a period of 25 years .

The evolut ion of t o t a l employment occurs p r inc ipa l l y under the

very stronq pressure of the t e r t i a r y s ec to r of a c t i v i t ies which

has increased from 55.378 jobs i n 1961 , t o 138.108 jobs i n 1986,

a r ea l i n c r ~ a s e of 1492. The secondary s ec to r has increased by

1292, passing from 30.738 johs i n 1961, t o 70.717 jobs i n 1986.

F ina l ly the primary s ec to r has diminished by 472, from 12.979 jobs

i n 1961, t o 6.917 johs i n 1986. (Re: Agricul ture)

Ten (10) c i t ies o r aqglomerations s ca t t e r ed over t he basin of the

R i chel i eu River monopol i ze the 51 pr i nci pal manuf ac tu r i ng concerns

(Re: 100 jobs and more).

The agglomeration Sore1 - Tracy - Et-Joseph-de-Sorel, accounts f o r 10 of these pr incipal employers which of fe r ' jobs t o 3,000 persons

i n the industry of t r anspo r t equipment, 2,989 persons i n t he indus-

t r y of transformation of metals and metal 1 i c f ab r i ca t i on , and 1,181

persons i n the f ab r i ca t i on of c lo thes and rugs.

W i t h 26 employers, the agglomeration of Saint-Jean-d' Ibervi 1 l e re-

presents the second largest industrial center in the basin of the

Ri chel ieu River.- The texti l e and clothing industries and thos'e

fabricating electrical appliances and equipment employ 2,414 and

2,162 persons respectively. Other important industri es include

the transformation of poultry (224 employees), the .manufacture of fur-

niture and construction industry (286 employees), the printing in-

dustry (224 employees), the fabri cation of metal 1 i c ?roducts (1 21

workers), the chemical industry (307 employees), and the fabri ca-

tion of non meta1li.c mineral (266 employees) ..

Urbanization

The urbanisation in the basin of the ~ i c h e l ieu' River i s intimately

related t o the growth of the suburban fringe of Montreal and t o the

development of the sa te l l i te towns of Sore1 and Saint-Jean.

The demogra~hic evolut.ion i s strongly emphasized in the counties of

Chambly and Verchsres which enjoy a population growth decisively su-

perior t o the other counties included in whole or in part within the

Richelieu basin. The develoment of the suburban fringe of

Montreal on the southern shore explains these strong growth rates.

The counties of Sai nt-Jean, Richel ieu, Missisquoi and Rouvi 1 le have

had a moderate demographic growth; nevertheless this qrowth remains

superior t o t h a t of Quebec in general due t o the geographical

location of these counties within the sphere bf influence of Mont-

real. The counties of Saint-Jean and Richelieu owe the moderate

growth of thei r total employment to the economic development of

thei r respective s a t e l l i t e towns of Saint-Jean and Sorel. The in-

crease in importance of the secondary and ter t iary sectors a t the

expense of the primary sector explains the moderate growth of to-

t a l employment in the counties of Rouville, Ibervil l e and Missisquoi .

The suburbani zation process in the Montreal region affects seriously

and enters into conflict w i t h the agricultural land uses. The f i r s t

effect of the development of the urban fringe has been f e l t in the

high and rapid increase of land prices which affect directly the via-

b i l i ty of agriculture; In addition there i s an effective loss of the

best agricultural 1 ands . The suburbanization a1 so causes a gradual des tructural i zati on of agri cul ture whi ch i s .mani fes ted on the one hand,

by the ageing of the agricultural population, a decrease in the cul t i -

vated area, and a decrease in 1 ong- term capital expendi tures (invest-,

ments) in agriculture and, on the other hand, by an increase in the

percentage of leaseholders, an increase in the area cultivated under

leaseholds, an increase in the number of farms with an income smaller

than $5,000. , and the rapid r ise in 1 and prices. In 1966, the urban fringe

of Montreal occupied a n agricultural area of approximatelv 150,090

hectares and this area could increase t o 275,000 hectares b.y 1986.

As ernohasized in recent studies (C.R.U.R., 1972) and ( P . L . U . R . A . M . ,

1973), the extension of Wontreal and the development of the means

and infrastructure of transport have greatly reduced the autonomy

of the growth poles of the southern shore and of the basin of the

Richelieu River specially.

The combined presence of Yontreal and the Qichel ieu River has fa-

vored a more pronounced. development of the c i t i e s of Beloei 1 , Cham-

bly and Saint-Jean, located on the west bank of the r iver in compa-

rison with the c i t i e s on the east bank, namely Saint-Hilaire,

Richel i eu and Ibervil le . Only the agglomeration Sore1 - Tracy, which constitutes a growth pole belies th is tendency. The r e s t of

the area consists of a s e t of small agplomerations, the main part

of which pl ays a pol ari zi ng role in the rural envi ronment. In the

corning years, the principal area of urbanization on the south shore

of Montreal will occupy the Boucherville - Beloeil - Saint-Jean - Laprairie polygon, where there will be an increase of the urbanized area

and an intensification of the density of po~ulation. The heno omen on

of sporadic land occupancy will s t i l l take place outside th is princi-

pal area of urbani zation.

Urbanization n o t only monopolizes an ever increasing land area of

high agricultural potential, i t also threatens various tour is t

and recreational s i t es . I

The use of the banks of the Richelieu River for private or semi

private vacation areas or i n certain cases for ~ermanent resi - dences , 1 imi t s the physical accessi bi 1 i ty and even visual access to the water area. This phenomenon can be observed a t the pre-

sent time around SaieYissisq~loi and to the south of Saint-Jean

d11berville. If this trend continues, i t i s expected that within

a few years the occupation of the w ~ s t bank will be continuous

linking Beloeil and Saint-Jean; the East bank seems to be less

threatened.

Aqri cul ture

The basin of the Richel i eu River i s in the center of the Southern

region of Montreal which i s the best agricultural area of Quebec. I

The highly favorable oedological conditions coupled with the best

climatic ccndi tions in the province bestow upon this region supe-

r ior yields per hectare; moreover, the ~roximity to Montreal means

lower transportation costs and the avai labi 1 i t y of an elaborated

related infrastructure, i .e. factories, research centers, etc.

The structure of production a t the present time in the 10 counties

included i n whole o r in part in the basin of the Richelieu River,

i.s simi 1 a r t o that of Queb@c province in general. Nevertheless ,

the importance a t the level of individual items i s different; thus,

the production of mi1 k products prevai 1s and forms the principal

source of income (47.4% of the agri cul tural production in the re-

gi on of Montreal) and the extensi ve cul ture of hay and fodder oc-

cupi es 70% of the cul t i vated area.

The potential for recreation and tourism

The potential for recreation and tourism of the basin of the Riche- .

1 ieu River derives from 3 areas, the region a t the extreme south-

east, the Monteregian Hi 11s and the Richelieu River. The pertinent

areas figure on the maps of the Land Inventory of Canada (1971)..

The extreme South-East region

This region i s by far the richest and most interesting from the

point of view of i t s possible use for recreation due t o i t s moun-

tai nous scenery, 1 ack of urbani sation, and variety of devel opment

possi bi 1 i t ies.

The Monteregi an Hi 1 1 s

The Monteregian Hi 11s enjoy a n important recreative function which

could be further exploited. Mount St-Hilaire i s an important area

w i t h strong recreative possibil i t ies. There i s a fringe area with

moderate possi b i 1 i t i es . Mounts St-Bruno and St-Gregoire have s i t e s I

with moderately strong and moderate possi bi 1 i t i e s accompanied by

s i t e s moderately weak. The s i t e s of Mount Rougemont have moderately

strong possibil i t ies and are surrounded by a s t r i p with moderately 4

weak possibil i t ies.

The Ri cheli eu River

The fluvial potential of the Richelieu River i s restr icted to a thin

s t r i p of shoreland a'nd i s favorable only for summer use for water

recreation and holidays. These s i t e s are not adequate for winter

sports, with the exception of snowmobili ng and ice-fishing. i

The lower Richeli eu extending from Sore1 to Chambly has only modera-

t e recreational possi bi 1 i t i es with the exception of certain enclaves

such as Deschai llons Is1 and and the vi 1 lages of Saint -Ours and

Saint-Denis where the possi bi 1 i t i e s are moderately strong. The re-

creation act iv i t ies are mainly limited to summer vacations on the

banks when available space a1 lows and to related water recreation.

On the other hand,' the Upper Ri chelieu, from Chambly t o the Cana-

di an-Ameri can border, and the lake region of Baie Mi ssi squoi have

a considerable number of s i t e s with moderately strong recreation

possi bi 1 i t i es and some s i t e s with strong possi bi 1 i t i e s . This of-

fers an equi 1 i bri um between equipment and the recreational possi - bi 1 i t i es. The zone above Sai nt-Jean and around Baie Missi squoi , i s

used for summer cottages and for summer recreation act iv i t ies such

as camping, swimming, boating, sport fishing, walks and car t r ips .

The rich history of this area enhances the at traction of the river.

The use in the past of the Richelieu River as a communication chan-

. nel and for f l uvi a1 transport resul ted in the his tori cal Chambly

channel which serves nowadays for recreational boating b u t also

draws numerous vi s i tors.

3.2: The study area

3.2.1: The zones of ana1,ysis

The area studied, within the basin of the Richelieu River which

was affected by the 1976 flood, i s comprised of the f i f teen

fol lowing municipali t i e s grouped for purposes of the present

work into 3 dis t inct zones for analysis. (Figure tY3.2.1.)

Zone # I : Zone Ri chel ieu (Ues t) -

This zone compri ses the four ( 4 ) following municipalities located

in the St-Jean county:

-Sai nt-Jean

-Sai nt-Bl aise

-Notre-Dame-de-Mont-Camel

Zone #2: Zone Richel ieu (East)

This zone comprises the five (5) following municipalities located

in the Iberville county:

-1bervi 11 e

-Sai nte-Anne-de-Sabrevoi s

-Henryvi 1 l e

-Sai nt-Thomas (Noyan)

Zone 53: Baie Missisquoi Zone

This zone comprises the s i x (6) fol 1 owing muni ci pal i t i es 1 ocated 1

in the Missisquoi county:

-Sai nt-Georges-de-C1 arencevi 1 1 e -

-Phi 1 ipsburg

figure 3.2.1

zone

LE PERIMETRE D'INTERVENTION/ MUNlClPALlTES ET ZONES D'ANALYSE

THE STUDY AREA/ MUNICIPALITIES AND ANALYSIS ZONES

--- - municipal i tds munic ipal i t ies zones d 'analyse - analysis zones

/ /

/ S a l n t - 0 l a i s e

S a b r e v o ~ s

\

Salnt - Armand N o t r e -Dame

Clarencev i I l e

Centre de recherche - - - - en amenagement reg~onal

UNNERSIT~ @ OE SHERBROOKE 1976

3.2.2: T h e m u n i c i ~ a l i t i e s invo lved.

Summary desc r i p t i on

The f o l l o w i n g paragraphs s e t f o r t h , f o r each of the concerned mu-

n i c i p a l i t y , a b r i e f desc r i p t i on of the p r i n c i p a l va r iab les used

dur ing the i nven to r i es t o determine t he samples i n o rder t o eva-

1 uate the damages caused i n 1976, f o r two 1 eve1 s o f h igh water

agreed upon f o r ana lys is purposes, namely:

- the agreed upon l e v e l o f re ference (R.F.) which corresponds t o an

(1 1 e l eva t i on of 101 '.51 (U.S.G.S datum) @ Rouses p o i n t .

- the l e v e l (R.F. 4 1) which corresponds t o an e l e v a t i o n o f 102'.51

(U.S.G.S. datum) @ Rouses Poin t .

Zone $1 : Zone Richel i PII ( W e ~ t )

Index of sources

Source # I : In te rp re ta t ion /C . R.A. R. / I976

Source #2: Departinent o f Pub1 i c Yorks , Government o f Canada, (Re:

B i b l i ography) . . . . . . - - . . . . . -

( 1 ) This l e v e l (R.F.) corresponds t o the e l e v a t i o n 101 ' .25 (Ca- nadian datum) 13 s t a t i o n #13 loca ted i n the v i c i n i t y o f the border (Re: F igure 2.3).

3.2.2.A: The municipal i t y of Saint-Jean (Re: Fiaure # 3.2.2.A)

1. Provincial code and type: 06-55-13 (C i ty )

2. Total area: KrnL - 29.44

Source #1

3. Fl obded a rea / f 1 ood 1976' R . F.

Total flooded area ( ac r e s ) 571 (4.9%)

Flooded ag r i cu l t u r a l area (acres) 104.4 (18 %)

Affected ag r i cu l t u r a l a rea (ac res ) 58 (10 %) Source #1

4. Population ' - 1971 1976 - 1981 - Total population 32,863 34,048 39,030

Dens i ty/Km 2 1,115 1,156 1,325

Densi ty/Mi 2 1,795 1,86i3 2,132

Acres 11,712

R.F. + 1 '

781 (6.6%)

202.6 (26 % )

Source #2

5. Affected s t ruc tures / f lood 1976 Total F1 ooded number number

R. F.

Permanent r e s i dences 5,612 115

Secondary res i dences 176 176

Industry and commerce 503 3

Agri cul t u r a l units 94 14

Source #1

F l ooded number

R.F. + 1 '

Woodl ots Affected area @ R.F.: 325 acres Affected area @ R. F. t 1 ' : 325 acres ,

6. Damaged public utilities/flood 1976

Federal structure

Mi 1 i tary camp

Provi nci a1 structure

Pub1 i c park

Municipal structure

Muni ci pal streets

Sewer

Water supply

Water treatment plant

Pri vate structure

Gaz pi.pel i ne

Wharf

Source #1

figure 3.2.2 A

St - Jean

UTlLlSATlON DU SOL: SECTEUR AGRlCOLE

LAN0 USE: AGRICULTURAL SECTOR.

SOLS 1wwes AaPICULTUI., SOL

3.2.2.8: The munic ipal i ty of St -Bla ise (Re: Figure #3.2.2.B)

1 . Provincia l code and type: 06-55-09 ( p a r i s h )

2. Total area : Acres 1 m

Source #1

3. Flooded a rea / (1976)' R . F. R.F. + 1 '

Total f looded area ( a c r e s ) ' 404 ( 2.4%) 487 ( 3%) -

Flooded a g r i c u l t u r a l area ( a c r e s ) 105.5 ( 2 6 %) 150 (31%)

Affect.> agr i c u l t u r a l a rea ( a c r e s ) 21.6 ( 5 %) 26.2 ( 5%)

Source #1

4. Popul a t ion - 1971 - 1976 1981 - 1986 - Total population 1,337 1,437 1,450 1,460

Dens i ty/Km 2 31 33 33 34

Dens i ty/Mi 2 50 54 5 4 5 5

Source X2

5. Affected s t r u c t u r e s / f l ood 1976 Total Flooded Flooded number number number

R.F. R.F. + 1 '

Permanent resi dences 175 9 0 119

Secondary res i dences 3 50 260 2 79

Indust ry and commerce

Agri cul t u r a l uni t s

Source #1

# Wood1 o ts Affected s u r f a c e @ R. F. : 110 ac res Affected s u r f a c e @ R. F. + 1 ' : 110 ac res

6. -. Pub1 i c u t i l i t i e s damaaes/flood 1976

Federal structure

Wharf

Municipal structure

Muni ci pal road

Pri vate structure

Mari na

R. F. - R . F . + 1 '

Source #I

figure 3.2.2 B

St-Blaise

SOLS AG.CIICOLR$ A 0 I K U L I I I I A L s o n

1VD. 1. lVD9

110 . A* . .b tym

3.2.2.C: The municipal i ty of Saint-Paul-de-1 ' Ile-aux-Noix (Re: Figure 3.2.2.C)

1 . Provi nci a1 code and type: 06-55-06 (muni c ipal i t y )

2. Total area: ~m Mi 2 Acres 18.31 11.38 7x

Source #1

3. Flooded area/ f lood 1976 # R. F. R.F. + 1 '

Total flooded area ( ac r e s ) 1,890 (26%) 2,025 (27%)

, Flooded ag r i cu l t u r a l area ( ac r e s ) 909.4 (48%) 1¶065 (52%)

Affected ag r i cu l t u r a l a rea ( ac r e s ) 463.4 (24%) 738 (36%)

Source #1

4. Popul a t ion 1971 - 1976 - 1981 - 1986 - Total population 9 54 1,078 1,100 1 ,1 75

I

Dens i ty/.Km 2 5 2 58 6 0 64

Dens i ty/Mi 2 83 9 5 9 6 103

Source X2

5. Affected s t ruc tures j f lood 1976 Total Flooded Fl ooded number number number

R.F. R.F. + 1 '

Permanent residences

Secondary res i dences

Industry and conunerce

Agri cul t u r a l u n i t s 42 2 5 2 5

Source #1

# Wood1 o t s

Affected area @ R.F.: 662 acres Affected area @ R.F. + 1 ' : 662 acres

L

6. Damaqed pub1 i c u t i 1 i t i e s / f l ood 1976

Provi nci a1 s t r u c t u r e

Provi nci a1 road

Muni c i pal s t r u c t u r e

Municipal road

P r iva t e s t r u c t u r e

Marinas

Wharf

Source #I

R. F. R.F. + 1 '

liguro 3.2.2 C

Saint Paul de l'ile aux Noix

38.

3.2.2.D: The munic ipal i ty of Notre-Dame-de-Mont-Carmel (Re: Figure #3.2.2. D )

1 . Provi nci a1 code and type: 06-55-01 (muni ci pal i t y )

2. Total area : Acres 11,520

Source #1

A

3. Flooded a rea / f1 ood 1976 * R. F. R.F. t 1 '

Total f looded area ( a c r e s ) 7 1 9 ( 6 . 2 % ) 1 , 0 4 2 ( 9 % ) - 3 . -,

Flooded a g r i c u l t u r a l area ( a c r e s ) 543 (75 %) 651 . 5 (62%)

Affected agr i cul t u r a l a rea ( a c r e s ) n/a n/a

Source #I

4. Popul a t ion

Total population

Densi ty/Km 2

Source #2

5. Affected s tructures, 'f 1 ood 1976 Total F1 ooded F1 ooded number number number

R.F. R.F. + 1 '

Permanent residences 192 10 30

Secondary r e s i dences 6 3 40 5 0

Indust ry and commerce 14 1 2

Agri cul t u r a l units 54 15 2 0

Source #1

# Wood1 o t s

Affected s u r f a c e @ R. F. : 97 acres Affected s u r f a c e @ R.F. t 1 ' : 97 acres

6. Damaged pub1 i c u t i 1 i t i e s

Municipal s t r u c t u r e

R.F. c 1 '

Municipal road 3.6 Km12.2 M i 4.5Km12.8 M i

P r i vate s t r u c t u r e

Railroad1C.N.

Gaz p i p e l i n e

Wharf. . .

1 pumping s ta - 1 pumping s ta - ti on ti on

Source # l

Centre de recherche en amMagement r&tonal

Zone W2: Zone Richelieu (Eas t )

Index of sources

Source $1 : In te rp re ta t ion /C . R. A. R. /I976 Source #2: Department of Publ ic Works, Government of Canada

(Re: Bibliography) 3.2.2.E. Municipal i ty o f I b e r v i l l e (Re: Figure #3.2.2.E)

1. Provi nci a1 code and type: 06-53-1 8 ( c i t y )

2. Total a rea : I(m2 3.17

~i Acres 1.97 1 m

Source #1

3 . Flooded a rea / f lood 1976 # R. F. R.F. + 1 '

Total flooded a rea ( a c r e s )

Flooded a g r i c u l t u r a l a r e a ( a c r e s ) n/a n/a Affected a g r i c u l t u r a l a rea ( a c r e s ) n/a n/a

4. Popul a t ion 1971 - 1976 - 1981 - 1986

Total populat ion 9,331 8,769 10,982 11,868

Densi ty/Km 2 2,943

Dens i ty/Mi 2 - 4,736

Source #2

5. Affected s tructures!f 1 ood 1976 Total number

Flooded Fl ooded number number

R.F. R.F. + 1 '

Permanent r e s i dences 1,683 20 5 0

Secondary r e s i dences 10 10 10

Indust ry and commerce 169 n/a 1

Agr icu l tu ra l units n/ a n/a n/a

Source #I

# Woodlots : Affected a r e a s @ R . F & R. F. + 1 ' : n/a

6. Damaged public u t i l i t i e s

Muni ci pal s t ruc ture

Muni ci pal road

Pri vate s t ruc ture

Rai 1 road/CN

Bri dge/CN

Wharf

Source #l

R.F. + 1 '

St-Athanase lberville

3.2.2.F: Municipality of Saint-Athanase (Re: Figure #3.2.2.F)

1 . Provi ncia l code and type: 06-53-1 3 (municipal i t y )

2. Total area: Acres 13,132

Source #I \

3. Flooded area/flood 1976 # R. F. R.F. + 1 '

Total flooded area ( ac r e s ) 273 (2%) 358 (2.7%)

Flooded agr i cul t u r a l area ( ac r e s ) n/a n/a

Affected agri cu l tu ra l area (ac res ) n/a n/a

Source #I

4. Popul a t i on 1971 - 1976 - 1981 - 1986 -. -*- Total population 2,894 3,697 3,299 3,460

Densi t y / ~ m 2 88 11 2 99 104

Dens i ty/Mi 2

Source n"2

5. Affected s t r u c t u r e s / f l ood 1976 Total Flooded F1 ooded number number number

R.F. R.F. + 1 '

Permanent residences 1,094 130 158

Secondary res i dences 308 100 124

Industry and commerce 9 6 n/a n/a

Agri cul tu ra l units 5 5 n/a n/a

Source #1

# Wood1 o t s

Affected area 8 R. F. : 230 acres Affected area 8 R. F. + 1 ' : 230 acres

6. Damaged pub1 i c u t i 1 i ti es

Muni ci pal s t ruc ture

Municipal road

R.F. + 1 '

Source #l

3.2.2. G: Municipality of Ste-Anne-de-Sabrevois (Re: Figure $3.2.2. G )

, 1 . Provi nci a1 code and type: 06-53-09 (muni ci pal i t y )

2. Total area: Acres 1 m

Source #1

3. Flooded area/flood 1976 ' R. F. R.F. + 1 ' Total flooded area ( ac r e s ) 1,589 (14%) 2,015 (18%) '

Flooded agri cul t u r a l area ( ac r e s ) 652 (41%) 966.6 (48%)

Affected agri cu l tu ra l area ( ac r e s ) 589 (37%) 776 (38%)

Source #1

4. Popul a t ion 1971 1976 1981 - - 1986 - Total population 1,129 ' 1,267 1,300 1,340

'2 Densi ty/Km 40 45 46 48

Dens i ty/Mi 2 141 7 2 160 168

Source #2

5. Affected s t r u c t u r e s ~ f l o o d 1976 To ta l Fl ooded Flooded number number number

R.F . R.F. + 1 '

Permanent r e s i dences 26 5 52 74

Secondary res i dences 292 292 292

Industry and commerce 2 0 3 3

Agri cul t u r a l u n i t s 5 0 27 3 4

Source if1

# Wood1 o t s Affected area @ R. F. : 1141 acres Affected area @ R. F. + 1 ' : 1141 acres

6. Damaged pub l ic u t i l i t i e s

Provi nci a1 structure

Provi nci a1 roads (Road 225) 1.4Km/ .87Mi 3.75Km/2 .34Mi

Muni ci pal structure

Muni ci pal road 16.3Km/10.18Mi 18 Km/11.25Mi

Pri va te s t r u c t u r e

Gas p i p e l i n e 1 Km/ . 7Mi 1.1 Krn/ .69Mi Wharf 1 1

- _

Source #1

3.2.2.H: Municipality of Henryvi1l-e.-(-Re: Figure ll3.2.2.H)

1 . Provi nci a1 code and type: 06-53-02 (municipal i t y )

2. Total area: ~m~ 2 - M i - Acres 39.82 24.75 15,840

. .

Source #1 . . .

3. Flooded area/flood 1976 Xr R . F. R.F. + 1 ' .- -. -.

Total flooded area ( ac r e s ) 3,213 (20%) 5,811 (36%)

Flooded ag r i cu l t u r a l area ( ac r e s ) 1,437 (45%) 2,304 (40%)

Affected ag r i cu l t u r a l a rea ( ac r e s ) 347' (1 1 % ) 681 (72%)

Source #I

4. Population - . 1971 - 1976 - 1981 - 1986 - Total population 806 782 820 820

Densi ty/Km 2 20 2 0 21 2 1

Dens i ty/Mi 2 32 3 1 33 33

Source 52

5. Affected --- s t ruc tures / f lood 1976 Total Fl ooded Flooded - - - - - --- number number number

R.F. R.F. + 1 '

Permanent r e s i dences 185 ' 1 0 ' 22 - ..

Secondary res i dences 240 180 1 80

Inctus t r y and commerce 13 1 2

Agri cul t u r a l u n i t .s 110 49 60

Source #I

if. Woodlots

Affected area @ R.F.: 2377 acres Affected area @ R.F. + 1 ' : 2377 acres

6. Darnaqed p u b l i c u t i l i t i e s R. F. R.F. + 1 '

P rov i n c i a1 s t r u c t u r e

P rov i n c i a1 road (Road #225) . 3 . 6Km/2.25Mi 10.OKm/6.25Mi

Munic ipa l s t r u c t u r e

Muni c i pa l road

Source #1

Henryville

UTILISATION DU SOL: LAND USE: SECTEUR AaRlCOLE AQRICULTURAL SECTOR

M-.oIcDu# .snrrUY .a mu a uan - 9 I3 Y"..

.ou# ,I.lOlr..L.. 0 -

52.

3.2.2.1: Municipality of Saint-Thomas (Noyan] (Re: Figure 83.2.2.1)

1 . Provi nci a1 code and type: 06-54-1 2 (muni c ipal i t y )

3. Flooded area/ f lood 1976 R.F. + 1 ' - - - - " - -. R. F. Total flooded area ( ac r e s ) 272 ( 2.5%) 462 ( 4.3%)

Flooded agr i cul t u r a l area ( ac r e s ) 100 (37 %) 342 (74 %)

Affected ag r i cu l t u r a l area ( ac r e s ) 436.5 ( n/a ) 1323 ( n/a )

Source iil

4. Popul a t i on 1971 - 1976 - 1981 - 1986 - Total population 53 8 61 0 540 530

Densi ty/Krn 2 2 0 22 20 19

Dens i ty/Mi 2 32 36 32 31

Source 62

5. Affected s t ruc tures l f 1 ood 1976 Total Fl ooded Fl ooded number number number

R.F. R .F . + 1 '

Permanent res i dences

Secondary res i dences

Industry and commerce 13 3 3

Agri cul t u r a l u n i t s 5 2 17 23

Source #I

# Wood1 o t s

Affected a rea 8 R.F.: 73 acres Affected area 8 R. F. t 1 ' : 73 acres

6. Damaged pub1 i c uti 1 i t i es

Provi nci a1 structure

Provi nci a1 road 2.3Km/1.45Mi 3.3Km/ 2 Mi

Muni ci pal structure

Municipal road

Wharf

Source: #l

figure 3.2.2 i

Zone #3: The Baie Missisauoi Zone

Index of sources

Source #1: I n t e rp re t a t i on l c . R.A. R./1976

Source #2: Department of Public Works, Government of Canada 3.2.2.5: M u n i c i ~ a l i t v of Saint-Georaes-de-Clarenceville (Re: Fiaure fi3.2.2.5.1 - - - - - - - - ---

I . Provi nci a1 code and type: 06-54- 08 (municipali ty]

2. Total area: ~ m ' Mi 2 Acres 3m 2 3 7 1 74.790

Source #I

3. Flooded area/flood 1976 # R . F. R.F. + 1 '

Total flooded area ( ac r e s ) 2,379 (16%) 2,810 (19%) -

Flooded agr i cul t u r a l area ( ac r e s ) 397.1 ( 16%) 615.5 (21%)

Affected ag r i cu l t u r a l area (ac res ) 434 (18%) 812 (29%)

Source #1

4. Population - 1971 1976 - 1981 - 1986 - Total population 5 58 506 590 600

2 Densi ty/Krn - 15 14 16 16

Dens i ty/Mi 2 2 4 2 2 26 26

Source #2

5. Affected s t ructures . / f l ood 1976 Total F1 ooded Flooded number number number

R.F. R.F. + 1 '

Permanent res i dences 51 1 10 10 > "

Secondary res i dences 1,300 40 65

Industry and commerce 6 -- - - Agri cul t u r a l u n i t s 7 3 24 30

Source #l

# Wood1 o t s

Affected area @ R.F.: 2048 acres Affected area @ R.F. + 1 ' : 21 10 acres

6. Damaged pub1 i c u t i l i t ies /f lood 1976

Provi nci a1 s t ruc ture

Provi nci a1 road

Munici pal s t ruc ture

Muni ci pal road

5e.

R.F. + 1 '

Source W1

3.2.2.K: Municipality of Saint-Sebastien (Re: Figure #3.2.2.K)

1 . Provi nci a1 code and t y ~ e : 06-53-01 (muni ci pal i ty )

2. Total area:

Source #1

Acres 15,487

3 . Flooded a rea j f lood 1976 iY R . F. R.F. + 1 '

Total flooded area ( ac r e s ) 233 (1.5%) 455 ( 3%)

Flooded ag r i cu l t u r a l area ( ac r e s ) 189 (81 %) 321 (70%)

Affected ag r i cu l t u r a l area ( ac r e s ) 246 ( n/a) 138 (30%)

Source ' #l t

.- 4. Population

Total popul a t i on 879 841 858 - - . 845

Dens i t y / h 2 2 2 2 2 22 22

Dens i ty/Mi 2 36 35 35 3 5

Source #2

5. Affected structures /f lood 1976 Total F1 ooded Fl ooded number number numbe r

R.F. R.F. + 1 ' - .

Permanent res i dences 200 n/a n/ a

Secondary res i dences n/a n/a n/a

Industry and commerce 4 n/a n/a

Agricultural un i t s 90 13 \ 19

Source #1

# Wood1 o t s

Affected area @ R . F. : 50 acres Affected area @ R. F. 3 1 ' : 50 acres

6. Damaged pub1 i c uti l i t i e s / f l o o d 1976

Provi nci a1 structure

Provi nci a1 road

R.F. + 1 '

Source #I

figure 3.2.2K

St-Sebastien UTlLlSATlON DU SOL: SECTEUR AGRICOLE

LAND USE: AGRICULTURAL SECTOR

0 I Omttte

SOLS AGRICOLES AGRICULTURAL SOIL

type Aa a Aa type type Ab hb type

eolsts Centre de recherche EXPLOITABLES WOODLOTS en amhagement regional

Source: ~ o m p l t a t l o n /c.R.A.R. 1978 UNIVERSITE MARECAGES SWAMPS ---.-.a- - t ? 3 . m n r c ~ n t ~ . s t a t a t i a n /c .R.A.R. 1976 M SHERBROOKE

3.2.2. L: Municipality of Venise-en-Quebec (Re: Figure t3.2.2. L )

1 . Provi nci a1 code and type: 06-54-1 1 (muni ci pal i t y )

2. Total area: - b2 ~i Acres 8.43 5.24 3 , 3 5 3

Source iY1

3 . Flooded a r ea / f l ood 1976 # R. F. R.F. + 1 '

Total flooded area ( ac r e s ) 1,280 (38%) 1,624 (48%)

. Flooded agr i cul t u r a l area (ac res ) 152 (12%) 206 (13%) Affected agr i cu l tu ra l area ( ac r e s ) n/a n/a

Source #1

4. Popul a t i on - 1971 1976 - 1981 - 1986 - Total population 502 644 550 5 70

Densi ty/Km 2 6 0 76 6 5 68

Dens i ty/Mi 9 6 122 105 109

Source t 2

5. Affected s t ruc tures / f l ood 1976 Total Fl ooded F1 ooded number number number

R.F. R.F. + 1 '

Permanent r e s i dences 778 30 7 0

Secondary res i dences

Industry and commerce

Agri cul t u r a l uni t s 4 3 4

Source #1

# Wood1 o t s

Affected area @ R. F. : 1,635 acres Affected area @ R.F. t 1 ' : 1,635 acres

6. Damaged pub1 i c u t i l i t i e s / f l o o d 1976

Provinci a1 structure

Provi nci a1 road

Municipal structure

Munici pal road

Wharf

Source #1 1

R. F. R.F. + 1 '

figure 3.2.2 L

Venise en Quebec

UTlLlSATlON DU SOL: LAND USE: SECTEUR AGRICOLE AGRICULTURAL SECTOR

3.2.2.M: ~ u n i ci pa l i t y ' of Sai nt-Pierre-de-Veronne (Re: Figure #3.2.2. M)

1. Provi nci a1 code and type: 06-54-28 (muni ci pal i t y )

2. Total area: ~m Mi Acres 2 - 27.08 16.83 10,771

Source #1

3. Flooded area/flood 1976 R . F. R.F. + 1 '

Total flooded area ( ac r e s ) 1 ,140(10%) 1 ,670 (16%)

Flooded agr i cul t u r a l area (ac res ) 274 (24%) 457 (27%)

Affected ag r i cu l t u r a l a rea (acres ) 44.6 ( 4%) 95.4 ( 6%)

Source X1

4. Popul a t ion - 1971 1976 - Total population 61 3 61 9

~ e n s i ty/~rn2 2 2 2 2

Dens i ty/Mi 2 36 36

Source #2

5. Affected s t ruc tures / f lood 1976 Total number

Permanent r e s i dences

Secondary res i dences

F1 ooded number

R.F.

Fl ooded number

R.F. + 1 '

Industry and commerce 10 n/a 2

Agri cul tu ra l un i t s 7 5 14 17

# Wood1 o t s

Affected a rea @ R. F. : 670 acres Affected area @ R. F. + 1 ' : 670 acres

6. Darnaaed public ut i l i t ies j f lood 1976

Provi nci a1 structure

Provi nci a1 road

Municipal structure

Muni ci pal Road

Private structure

R.F. R.F. + 1 '

. . Bell Canada ' '1.2Krn/ .75Mi 3.2Km/2 Mi Gas Pipeline

Source X I

SOLS AGRICOLES AGRICULTURAL SOIL

tvoe Aa 0 Aa tvDe

C iolsas EXPLOITABLES

WOODLOTS Centre de recherche

MARECAGES SWAMPS en arnhagement regional

~ o u r c a : compi la t ion /c.R.A.R. 1976 L FRICHES UWVERSIT~ lntarpretation/ C.R.A.R. 1976

DE SHERBROOKE

3.2.2.N: Municipality of Saint-Armand-Oues t (Re: Figure 7Y3.2.2. N)

1 . Provi nci a1 code and type: 06-54-04 (municipal i t y )

2. Total area: Acres 20,403

Source 81

3. Flooded a rea l f lood 1976 a R. F. R.F. + 1 ' Total flooded area ( ac r e s ) 673 (3.3%) 707 ( 3.5%)

Flooded agr i cul t u r a l area (acres ) n/a n/a

Affected ag r i cu l t u r a l area ( ac r e s ) 12.7 (2 %) 25.5 ( 4 X )

Source #1

4. Popul a t i on - 1971 1976 - 1981 - 1986 - Total population 942 1,008 960 9 50

2 Densi ty/Km 18 20 - 19 19

Dens i ty/Mi 2 29 3 1 30 3 0

5. Affected s t ruc tu r e s / f l ood 1976 Total Flooded Flooded number number number

R.F. R.F. + 1 '

Permanent r e s i dences 426 . n/a n j a . . -

Secondary res i dences 11 8 1 1

Industry and come rce 2 0 n/a n / a

Agri cul t u r a l u n i t s 110 1 1

Source $1

d Wood1 o t s Affected area @ R. F. : 575 acres Affected a rea @ R. F. + 1 ' : 575 acres

6. Damaged pub1 i c ut i 1 i t ies /f lood 1976 R. F. R.F. + 1 '

Municipal s t ruc ture

Municipal road

Private s t ruc ture

Bell Canada .- . .

Gas pipeline

Source #1

saint-~rmand-0ues

UT l LlSATlON DU SOL : ' ' SECTEUR AGR'ICOLE

LAND USE: AGRICULTURAL SECTOR

SOLS AGRICOLES AGRICULTURAL SOIL ty1

type Aa Aa ~ Y P ? Ab type type Ab

solsts WOODLOTS

MARECAGES (L FRICHES . 8 BOGS

0 0.25

Source: Compi la t ion /c.R.A.R. 1976 ~ n t e r ~ r e t a t i o n / ~ . R . ~ . ~ . 1976

Centre de recherche en arnhagement regional UNIVERSITE lg DE SHERBROOKE

3.2.2.0: Municipaljty of Phi l ipsbura (Re: Figure #3.2.2.g)

1 , Provi nci a1 code and type: 06-54-06 ( v i 11 age)

2. Total area: h2 - ~i Acres 1.06 .66 422

Source #I

11

3. Flooded a rea l f lood 1976 " R . F. R.F. + 1 '

Total flooded area ( ac r e s ) n/a nfa

Flooded agr i cul t u r a l area ( ac r e s ) n/a n/a Affected agri cu l tu ra l area ( ac r e s ) n/a n/a

Source #I

4. Population. 1971 - 1976 - 1981 - 1986 - Total popul a t ion 391 380 380 3 70

2 Densi ty/Km . 368 3 58 358 348

Densi ty/Mi 2 592 576 5 76 560

Source iY2

5. Affected s t ructures / f lood 1976 Total Flooded F1 ooded number number number

R.F. R . F . + 1 '

Permanent r e s i dences

Secondary res i dences 2 - - -- Industry and commerce 3 - - - - Agricultural units - - - - --

Source # I

# Wood1 o ts Affected area @ R.F.: n/a Affected area @ R. F. + 1 ' : n/a

6. Damaged p u b l i c u t i 1 i t i e s / f l o o d 1976

Private structure

Wharf

R.F. + 1 '

Source #l

SECTION 4.0: THE GENERAL APPROACH AND SCHEDULE

4.1 : The general approach

4.21 The p r o j e c t schedule

4.3: The surveys: s p e c i f i c approaches used

CTION 4.0: GENERAL APPROACH AND SCHEDULE

4.1 : General approach

The general approach used in the realization of th is project consisted

of the following four (4) operational phases: -

Phase #l : Preliminary phase (1.5 month ) (May 1 - June 15, 1976) Phase #2: Field surveys (3.0 months) (June 15 - Sept. 15, 1976) Phase 83: Analysis and projections 1976-2030 (3.5 months) (Sept.15 - Dec.31, 19 Phase #4: Final results (3.0 months) (Jan. 1 - March 31, 1977)

In the fol lowing paragraphs the methodologi cal process and the detai 1 s -

of operations as we1 1 as of the principal act iv i t ies undertaken during

these phases are described.

4.2: The project schedule

4.2.1: Phase #1: Preliminary phase Duration: !#lay 1 - June 15, 1976

This f i r s t phase involved the gathering from a l l concerned organi za-

tions of a1 1 the documentation and re1 evant materi als avai 1 able on

the subject, in preparing the basic technical material and in deter-

mining in a specific manner the approaches as we1 1 as the programa-

tion t o be used in the subsequent operations.

The principal act iv i t ies realized during this phase were:

Activity #1: Documentation and information materials

Acquisition of basic information and completion of

maps delineating the flooded areas by the high wa-

ter marks of 1976 (hydrometrical surveys, longi tudi - nal profi 1 es , areal photos , photogrametri cal plans ,

land use maps, municipal surveys..)

Activity nY2: Approach/Ques tionnai re \

In order t o comply with the given mandate, the three ( 3 )

cost categories applying t o various types of damages incur-

red in the five (5) sectors of activit ies, namely:

1 ) the permanent residential sector

2 ) the secondary resi denti a1 sector

3) the industri a1 and commercial sector

4 ) the agricul tural sector

5) the public u t i l i t ies sector.

were retai ned for inventory and analysis purposes.

The cost categories are:

1 ) Primary direct costs (Re: damages of a physical nature)

These costs constitute the losses and/or damages of a physical

nature estimated on the basis of the costs incurred in 1976 in

res tori ng damaged property t o i t s pre-fl ood condition either

by replacement or by reparation.

2) Primary indirect costs (Re: damages of a non-physical nature)

These costs consist of the losses evaluated on the basis incur- . \

red in 1976 as a result of an interruption in normal activit ies

and/or regular services for whi ch no compensation was obtai ned

outside of the flooded zone or a t a date af ter the flood.

3) Secondary costs (Re: damages of a non-physical nature) 3

These costs consist of the losses o r damages evaluated on the

basis of costs incurred in 1976 for measures realized in order

t o limit the damages caused by the flood.

Five (5) questionnaires were worked- o u t l a te r in order to. obtain in

the field, (Re: Phase #2) from a sample representative of the three

( 3 ) zones t o be analyzed and the fifteen (15) municipalities con-

cerned, the bas?c d a t a permitting the evaluation as a whole of

the three (3 ) categories of damages in relation t o the five rele-

vant sectors (resi denti a1 , commerci a1 and i ndus t r i a1 , agri cul t u -

75. ,

ral and the pub1 i c uti 1 i t i e s sector) . The data were conside-

red wi t h reference to two ( 2 ) fol l owi ng water elevations nanely :

-the agreed upon flood level of reference ( R . F . ) : elevation of

101 ' .51 (U.S.G.S.. datum) @ Rouses Point.

-the level of reference + 1 ' (R.F. + 1 ' ) : elevation of 102'.51

(U.S.G.S. datum) @ Rouses Point.

The contents of these five (5) questionnaires , included in the appen-

dix (Re: Appendix # I ) , i s explained in sections 4.3 and 5.6 of th is

report.

Questionnaire A: Permanent and secondary residential sector (Re: Section j4.3) (Re: Appendix 1 - A )

Questionnaire B: I ndus t r i a1 and commerci a1 sector (Re: Seaion #4.3) (Re: Appendix 1 -B)

Ques t i onnai re C: Agri cul tural sector (Re: Section X4.3) (Re: Appendix 1 -C)

Questionnaire D: Sector/Publ i c Uti 1 i t i es (Re: Section iY4.3) (Re: Appendix 1 -D)

Questionnaire E: Recreation a1 value (Re: Section #5.6) (Re: Appendix 1 - E )

Activity #3: The sampl i nq approach

In accordance with the provided terms of reference, the following

mean sampling rates were chosen for the f ive ( 5 ) sectors of act i -

vi t ies located inside the study area @ R.F. and R.F. t 1 ' :

1) Residential permanent sector: sampling of 10% of the flooded

stock.

2 ) Secondary residenti a1 sector: sampling of 10% of the flooded

stock.

3) Industrial and commercial sector: 100% sampli ng of the flooded

stock.

4) Agricultural sector: sampling of 25% of the flooded stock.

5) Public u t i l i t i e s sector: 100% sampling of the flooded stock.

4.2.2: Phase #2: Field surveys Duration: June 15 - September 15, 1976

This phase consisted of evaluating the total damages (primary

direct damages, primary indirect damages, secondary damages) cau-

sed t o the f ive (5) agreed upon sectors of activity for the two (2)

above mentioned elevation levels ( R . F . , R.F. + l ' ) , based upon

investigations and f ie ld surveys carried on each of those municipa-

l i t i es of the three ( 3 ) agreed upon analysis zones.

The results of these inventories made possible the plotting of

al l of the 1976 stage/damage curves used for analysis and projec-

tion purposes (1976-2030)

The pri nci pal activi t i es real i zed duri ng this phase were the fol 1 ow-

ing:

Ac t i v i t y #1: Surveys/Zone Richel i e u (West)

The f o l l ow ing tab les g i v e the t o t a l number o f samples used by

a c t i v i t y sec to r a t the sca le o f each m u n i c i p a l i t y i n t he West-

e r n zone ( ~ i chel i eu) . The f i gu res 422(A) , 422(B) , 422(C) and 422(D) show the l o c a t i o n of sampling po in ts f o r each of these

m u n i c i p a l i t i e s .

ZOMEIRICHELI EU (WEST)

REFERENCE LEVEL ( R . F. )

NUMBER OF SAMPLES BY SECTOR OF ACTIVITY AND BY MUNICIPALITY

c i pal4 t y Permanent r e s . Secondar r e s Ind.& Com. A r i c u l t u r e Pub. U t i l i t i e s . - [I 1 C2) en - 8 T 7 - r 2 (2 )

1. de Mont- 41 10 (40%) 9 1 40 (222) 1 1 1 (100%) 6/15, (40%) 100% +me 1

) Nb. o f sampled s t ruc tures1Nb. o f f looded structures @ R.F.

) % of sampled s t r u c t u r e s / f l o o d e d s t r u c t u r e s @ R.F.

TABLE 4.2.2.B

REFERENCE L E V E L . + 1 ' (R.F. + 1 ' 1

NUMBER OF SAMPLES BY SECTOR OF ACTIVITY AND BY MUNICIPALITY

i c i pa l i t y Permanent res . Secondar res Ind. & Com. A r i c u l t u r e P u b . U t i l i t i e s (1 ) (2 2 1 (1) 121 h (2 )

D. de Mont- 4 / 30 (13%) 91 50 (18%) I / 2 ( 50%) 6/20 (30%) 100% ~rrnel

I ) Nb. o f sampled s t ruc tu re s /Nb . o f f l ooded structures @ R. F. t 1 '

) % of sampled s t r u c t u r e s / f 1 o o d e d structures @ R. F. + 1 '

figure 4.2.2 A -.; '. '.

St-Jean

flgure 4.2.2 C

Saint Paul de l'he aux Noix

figure 4.2.2 D

Activity #2: Zone Ri chel ieu (east)

The following tables give. the total number of samples used by

activity sector a t the scale of each municipality in the east-

ern zone (Richel ieu). The figures 4.2 .2 . (E ) , 4 .2 .2 . ( F ) , 4 . 2 . 2 .

( G ) , 4 . 2 .2 . (H) and 4 .2 .2 . ( I ) show the location of sampling

poi nts for each of these municipal i t i es .

-

TABLE 4.2.2.C

ZONE RI CHELIEU (EAST)

REFERENCE LEVEL (R. F. )

NUMBER OF SAMPLES BY SECTOR OF ACTIVITY AND BY MUNICIPALITY

ii ci pal i t y Permanent res . Secondar res. Ind. & Com. A g r i c u l t u r e Pub. U t i l i t i e s ( 1 ) ( 2 ) - (1) ( 2 ) 1 1 ) ( 2 ) ( 2 )

I Nb. o f sampled s t ruc tu re s1Nb . of f l ooded structures @ R.F.

I % of sampled s t r u c t u r e s / f l o o d e d s t r u c t u r e s @ R.F.

TABLE 4.2.2.D

ZONE R I CHELIEU (EAST)

REFERENCE LEVEL + 1 ' (R. F. + 1 ' )

NUMBER OF SAMPLES BY SECTOR OF ACTIVITY AND BY MUNICIPALITY

n i c i p a l i ty Permanent res. A r i c u l t u r e Pub. U t i l i t i e s - (1 ) ( 2 ) h ( 2 )

e r v i 1 l e 2 / 5 0 ( 4 %) 1 / 1 0 (10 % ) 0 / 1 N/A N/A N/A 100%

brevo i s 8/ 74 (10.8%) 271292 ( 9.2%) 313 (100%) 71 34 (20.5%) 100%

n r y v i 11 e 2 / 2 2 ( 9 X ) 181180 (10 % ) I 1 2 ( 5 0 % ) 1 0 / 6 0 (17 7) 100%

Nb. o f sampled st ructures/Nb. o f f looded s t r u c t u r e s @ R.F. t 1 '

) % of sampled s t ruc tu res / f l ooded s t r u c t u r e s @ R.F. + 1 '

St-Athanase lber ville

LOCALISATION DES POINTS D'ECHANTILLONNAGE

LOCATION OF SAMPLES

figure 4.2.2 G

Ste-Anne-

de-Sabrevois

LOCALISATION DES POlN D'ECHANTILLONNAGE

Cant18 de recherche en amhagement -1

0 011 01 - UMERSlTE i g De smBR00KE

SICIKUR ReSIOINTIEL I C S i O I N I I A L SECTOR

* SCCTKUR INOUSTRIEL CT COYYCRCIAL INWITRIAL r n o c o w w c n c ~ r ~ s c c r o n

SECTEUR AOllCOLe AGRICULTURbL SECTOR

figure 4.2.2 i

Activity #3: The Baie Missis.quoi zone

The following tables give the total number of samples used by

activity sector a t the scale of each municipality in the Baie

Missisquoi zone. The figures 4 . 2 . 2 ( 5 ) , 4.2.2(K), 4 . 2 . 2 ( L ) , 4 .2 .2

( K ) , 4 .2 .2(N) , and 4.2 .2 (0 ) show the location of sampling points

for each of these muni ci pal i t ies .

TABLE 4.2.2. E

BAIE MISSISQUOI ZONE

REFERENCE LEVEL (R. F. )

NUMBER OF SAMPLES BY SECTOR OF ACTIVITY AND BY MUVICIPALITY

i c i pa l i t y Permanent res . Secondar res Ind. & corn A r i c u l t u r e Pub. U t i 1 i ti es (1 ( 2 ) .liJ-%v -Tij--mf .h ( 2 )

arencevil le 1/10 (10%) 4/ 40 ( 10%) N/A N/A 6/24 ( 25%) 100%

illipsburg N/A N/A N/A N/A N/A N/ A N/A N/A 100%

r b - t o t a l 4/41 (10%) 12/112 ( 11%) 919 (100%) 14/55 ( 255) 100%

) Nb. o f sampled structures/Nb. o f f looded s t r u c t u r e s @ R.F.

% o f sampled s t ruc tu res / f l ooded s t r u c t u r e s @ R.F.

TABLE 4.2.2.F

BAIE MISSISQUOI ZONE

REFERENCE LEVEL + 1 ' ( R. F. 9 1 ' )

NUVBER OF SAMPLES BY SECTOR OF ACTIVITY AND BY MUNICIPALITY

i c i pa l i ty Permanent res . Secondar res Ind. & Corn. A r i c u l t u r e Pub. u t i l i t i e s 11 ) (2) e (1) (2). ,* (2)

a r e n c e v i l l e 1 /10 (10%) 41 65 ( 6%) N/A N/A 6/30 ( 20%) 100%

-%bast i en N/A N/A N/A N/A N/A N/A 3/19 ( 16%) 100%

1

i 11 i psburg N/A N /A N/A N/A N/A N/A N/A N/A 100%

16 - t o t a l 4/86 ( 5%) 12/762 ( 7%) 9/16 (56%) 14/71 ( . 205) 100%

) Nb. o f sampled st ructures/Nb. o f f loobed s t r u c t u r e s @ R.F. + 1 '

I) % of sampled s t r u c t u r e s / f l o o d e d s t r u c t u r e s @ R.F. + 1 '

figure 4.2.2J

figure 4 . 2 . 2 ~

St-Sebastien LOCALISATION DES POINTS D'ECHANTILLONNAGE

LOCATION OF SAMPLES

0 0 25 0 5 1 Omvlle

SECT EUR RESIDENTIEL RESIDENTIAL SECTOR

SECTEUR INDUSTRIEL ET COMMERCIAL * INDUSTRIAL AND COMMERCIAL SECTOR SECTEUR AGRICOLE AGRICULTURAL SECTOR

Source : Relevhs de terraln / c . R.A.R. 11976 Fleld survey 1 C.R.A.R. 11976

Centre de recherche en arnenagernent regional

figure 4.2.2 L

Venise en Quebec

LOCALISATION DES POINTS D'ECHANTILLONNAGE

LOCATION OF SAMPLES

SECTEUR RESIDENTIEL ' RESIDENTIAL SECT0 R mill.

0 0.25 0.5 1.0 SECTEUR INOUSTRIEL ET COMMERCIAL - * INDUSTRIAL AND COMMERCIAL SECTOR SECTEUR AGRICOLE AGRICULTURAL SECTOR

Sourco : Rolovie do torrain /C. R.A.R. 11876 Fiald survey / c.R.A.R./ 1878

Philipsburg

LOCALISATION DES POINTS

. . LOCATION OF SAMPLES

SECTEUR RESIDENT I E L RESIDENTIAL SECTOR

SECTEUR AGRICOLE [II AGRlCULTURAL SECTOR

0 .25 0 5 0

Field survey / C:R.A.R. 11976

Centre de recherche en amhagement regional

Activity #4: The construct of the 1976 staqe/damage curves

The compi 1 ation of results reached during the inventories

and surveys allowed the construct of the sectorial and

total stage/damage curves as presented in section 5.0 of

th is report.

4 . 2 . 3 : Phase f3: Analysis and projections (1976-2030) Duration: September 15 - December 31 , 1976

This third phase consisted of plotting the sectorial and

total stage/damage curves for a typical flood and of esta-

bl ishing the 1976 average annual damages. These basic

curves were used to plot, according t o two ( 2 ) a1 ternative

solutions considered by the International Richel ieu-Champ1 ain

Board, the average annual damages for the 1976-2030 period.

Activity #1: Typical flood stage/damage curves and average annual dama-

ges for 1976

The construct of these basic curves described in section

6.0 of this report, was made possible by using the results

from the 1976 inventories and by computing flood frequencies

' i n the study area.

A c t i v i t y #2: The 1976-2030 p r o j e c t i o n s

The p l o t t i n g o f t h e stage/damage cu rves d e s c r i b e d i n s e c -

t i o n 6.0 o f t h i s r e p o r t , was made i n r e l a t i o n t o two ( 2 )

a l t e r n a t i v e s o l u t i o n s envisaged f o r t h e 1976-2030 p e r i o d

by t h e I n t e r n a t i o n a l Champ1 a i n-Ri che l i eu Board. These

two (2 ) a1 ternati ve s o l u t i o n s , which are non-s t r u c t u r a l ,

can be b r i e f l y d e s c r i b e d as fo l lows :

A1 t e r n a t i v e #1: S t a t u s quo

No s o l u t i o n , n o r measure o f any k i n g , would be t aken d u r i n g

t h e 1976-2030 pe r iod by p u b l i c o r g a n i z a t i o n s i n o r d e r t o

a1 1 ev i a t e t h e Upper Ri che l i eu f l o o d problem.

A1 ternati ve #2 : Flood-pl a i n requl a t i on acco rd ing t o two ( 2 ) i n t e r v e n t i o n hypo thes i s (1980-2030)

A l t e r n a t i v e #2(A)

This s o l u t i o n would c o n s i s t i n e n f o r c i n g du r ing the 1980-

2030 pe r iod a se t o f r u l e s con ta ined i n a Canada-Quebec

ag reemen t ( ' ) , which would permi t t o c o n t r o l i n t h e 1 : I00

h e a r f l o o d p la in ' ' ) , l and use and impose r e s t r i c t i o n s on

new forms o f development s u b j e c t t o f l o o d damage.

(1 ) Canada-Quebec agreement r e s p e c t i ng g l ood- r i s k rapping appl i ed t o f lood-damage r educ t ion .

( 2 ) The 1 : I00 y e a r f l o o d cor responds t o a w a t e r l e v e l o f 102 ' .0 (U.S.G.S. datum) a t Rouses Po in t .

A1 t e r n a t i ve #2 ( B )

This so lu t ion would cons i s t i n enforcing during the 1980-

2030 period t he s e t of p resc r ip t ions and ru les contained

in the Canada-Quebec agreement (Re: A1 t e r n a t i ve #2 ( A ) ) and

t o prevent, through 1 ocal and regi ona1 control measures

any new forin of development i n the 1 :20 yea r f lood pla in . (3 )

4.2.4: Phase 94: Final r e s u l t s Duration: January 1 - March 31, 1977

A f i na l repor t was prepared and submitted t o t he au tho r i t h i e s

of the Internat ional Champ1 ain-Ri chel ieu Board.

(3 ) The 1 : 20 year f lood corresponds t o a 1 eve1 of high waters of 101' .4 (U.S.G.S. datum) a t Rouses Point.

The surveys : specific approaches used

In the following section there i s a brief description of

the method01 ogy as we1 1 as of the specific approaches

used t o determine the 1976 flood damages.

Ques t i onnai res

'As mentioned before, f i ve ( 5 ) questi onnai res were developed

for inventory purposes (Re: Appendix I ) .

The questionnaire "A" deals with the permanent and seconda-

ry residenti a1 sector. The questionnaire "B" deals with --

the i ndus t r i a1 and commerci a1 sector. The questionnaire "C"

deals with' the agricultural sector. The questionnai re "D"

deals with the public u t i l i t ies sector, and the question-

naire "El' deals with .the "recreational Value". The content

of the four (4) f i r s t questionnaires i s explained in the

following paragraphs.

The questionnaire "A (Re: appendix 1 - A ) Permanent and secondary resi denti a1 sector Questions 1-4 (general i nformati on)

The f o u r ( 4 ) f i r s t questions identify the place, the d a t e

of the interview and the name of the interviewer.

Questions 5-1 3 (general informati on)

The questions 5-13 identify the respondent (owner or tenant),

the type of residence, number of occupants, period of occupa-

tion and family income.

Questions 14-1 5 (qeneral information)

These questions determine the duration of the periods with-

o u t access and with limited access t o the structure and. t o

water during the 1976 flood.

Questions 16-21 (physi cal inventory)

The questions 16-21 describe the structure (1 ength, width , depth,

number of floors.. .) and determine i t s value,

Questions 22-25 (physi cal i nventory)

These questions determine the elevation reached by the

high water during the 1976 flood, in relation t o the structure.

Questions 26-28 (physical inventory)

The questions 26-28 try t o determine the "damage = 0" el.evation in

re1 ati on to -the reference f l ood 1 eve1 .

Questions 29-31 (primary direct damaqes

These questions try t o determine the monetary value of damages caused

t o the structure in 1976 a t R. F. and R. F. t 1 ' (re: primary di rect

costs). The respondent i s also asked t o specify the value of these

costs for previous years.

Questions 32-35 ( primary di rect damaqes )

The questions 32-35 try t o determine the monetary value of damages

caused t o the contents of the principal structure and t o the o u t -

. --

buildings. The respondent i s also asked t o specify the value of

these costs for previous years.

Questions 36-41 (~rimary indirect costs)

These questions try t o determine the monetary value of damages cau-

sed t o the s i t e of the property. The respondent is also asked t o

specify the value of these damages for previous years.

Question 42 (primary indirect damages)

The objective of th.is .question i s t o deter mine the value of the

costs of re1 ocation i ncurred i n 1976.

Questions 43-44 (secondary damages)

The objective of the questions 43-44 i s t o determine the value of

the costs of temporary and permanent preventive measures taken be-

fore, during and af ter the 1976 flood.

Question 45 (secondary damages)

The objective of this question i s t o determine the value of the ac-

cel erated deval uati on of the property caused by floods.

Questi on 46 (general information

. - The question 46 identifies the source of damages caused by the

1976 flood.

Question 47 (secondary damages)

This question t r ies t o identify the value of damages caused t o

the property by waves.

Quest