Integration of Flood Control and Basin Development in the Cagayan River Basin

Disasters have occured frequently in the Cagayan river basin : Disaster = Hazards�~VulnerabilityHazards : Flood, Sedimentation and Bank Erosion, Typhoon, DroughtVulnerability : Damage of Casualty and Assets, Low Productivity, Lack of Integrated Organization and Institution, and Low Capability

Target in Year 2020

Direct Measures of Structural and Non-Structural

Supporting Measures

Sustainability of Disaster Prevention Capacity

Implementing Structure

Improvement ofFunding System

AwarenessEducationCapacity BuildingOrganizational

ImprovementInstitutional

Improvement

WatershedMangement

Improvement of Flood Forecastingand Warning System

Improvement of DisasterManagement System ResettlementFlood Control

Operation, Maintenance andRepair

Mitigation of Hazards by Structural Measures Reduction of Vulnerability by Non-StructuralMeasures

Monitoring and UpdatingSystem

Agri.Production

Agro-industry

Fishery

CEZA

AFMAWatershedManagementFlood Control GRDP: National

Average(excluding NCR)

4 th lowest at present

Multi-sectoral OrganizationPMO-DPWH Leading

Active Participation byLGUs, Communities and NGO

Cauayan RegionalAgri-industrialGrowth Center

Landuse/IrrigationDevelopment

Aparri

Lal-lo

Magapit Br.Magapit

Gattaran

Nassiping

Tuao

Alcala

Iguig

Amulung

Solana

Buntun Br.

Enrile

Cabagan

Tumauini

Gamu Br.

Naguilian Br.

Ilagan

Mallig

Tuguegarao

Babuyan Channel

Dummon River

Caga

yan

Rive

r

Pared RiverChic

o Rive

r

Tuguegarao River

Sier

ra M

adre

Mou

ntai

ns

Pinacanauan River

Tumauini River

Caga

yan

Rive

r

Ilaga

n Ri

ver

Siffu River

Mall

ig Rive

r

Cordille

ra Mou

ntains

Scale0 10 20 30 km

N

The Feasibility Study of the Flood Control Projectfor the Lower Cagayan River

in the Republic of the PhilippinesJAPAN INTERNATIONAL COOPERATION AGENCY

Figure 10.4.1 Location of Bank Protection Works in the Lower Cagayan River

Bank erosion

River CourseRoadBasin BoundarySubbasin of MajorTributary

LEGEND

9

10

11

14

18

2021

19

12

13

17

16

15

1

3

4

5

6

7

8

2

The Feasibility Study of the Flood Control Projectfor the Lower Cagayan River

in the Republic of the PhilippinesJAPAN INTERNATIONAL COOPERATION AGENCY

20 m0 5 10 15

Gabion (t=100cm)Gravel fillFilter mattress

1.5

1

1.5

1

3

1

Bank Protection Works Type A

Spur Dike Type D

Cross Section of Spur Dike

Gabion (t=30cm)

Paving with cobble-stone(t=40cm)Ave.dia=15cm

Gravel fill(t=20cm)Filter mattress

Wooden Pile L=3m

Gabion t=30cm

Gabion t=1m

3

1

Bank Protection Works Type B

Bank Protection Works Type C

Minimum thickness 2m

Gabion (t=50 or 30cm)Gravel fill(t=20cm)Filter mattress

Paving with cobble-stone(t=40cm)Gravel fill(t=20cm)Filter mattress

2.5

1

Boulder Riprap (Ave.dia=20cm)

Natural bank

Figure 10.4.2 Standard Design of Bank Protection Works

Babuyan Channel

Dummon River

Pared River

Chico

Rive

r

Tuguegarao River

SIER

RA M

ADRE

MOU

NTAI

NS

SIER

RA M

ADRE

MOU

NTAI

NS

Pinacanauan River

Tumauini River

Caga

yan R

iver

Ilaga

n Rive

r

Siffu River

Mallig River

CORD

ILLE

RA M

OUNT

AINS

Addala

m Rive

r

Caga

yan R

iver

Cagayan

River

Magat River

Magat Dam

Abaca Dam

Denip Dam

Tanudan Hydropower Project

Ibulao Hydropower Project

Diduyon Hydropower Project

CAGAYAN

ISABELA

AURORAQUIRINONUEVA VIZCAYA

IFUGAO

MOUNTAINPROVINCE

APAYAO

KALINGA

Magapit PIS (CIADP)

Iguig-Alcala-Amulung PIS(CIADP)

Villaverde IP

Pinacanauan RIS

Santa Maria CPIS

Lallo West PIP

Zinundungan IEP

Alcala Amulung West PIP

Sto. Niño PIP

Lower Chico RIS

Solana PIS REP

Rizal IPEnrile PIP

Delfin Albano PIPMallig RIS

San Pabro-Cabagan IS

Ilagan PIP

Tumauini Reservoir P

San Mariano PIP

Dibuluan RIP

Dabubu IP

Debibi Groundwater IP

Nueva Vizcaya Bagabag IS

Upper Ilagan Western Barangay PIP

Nassiping PIP

Lower Reach Dike

Gabut COC

San Isidro COC

Alcala-Buntun DikeTuguegarao COC

Enrile Dike

Tuguegarao Dike

Agro-industry Development �by CEZA

CasecnanTransmission Project

Babuyan Channel

Philippine Sea

Aparri

Lal-lo

Magapit

Santa Ana

Alcala

Nassiping

Tuao Iguig

Amulumg

Tuguegarao

Solana

EnrileAparri

Tumauini

Cabagan

Mallig

Ilagan

Gauyan

Echague

Jones

Santiago

Siffu No.1 Dam

Matuno No.1 Dam

K E Y MA P

PHIL IPPIN

E SEALU

ZO

N S

EA

MINDA NA O SE A

Cagayan RiverBasin

Evacuation system (FFWS, evacuation center), Resettlement,Supporting Measures, Reforestation, Sabo Worksare also included in the Reviewed Master Plan.

N

LegendBasin Boundary Provincial Boundary Major Town Dike Cut-off Channel (COC) Bank Protection Existing or On-going Irrigation Area Proposed Irrigation Area Existing or On-goingDam and Reservoir Proposed Dam and Reservoir Transbasin or Headrace Tunnel Powerhouse0 10 20 30 40 50 km

SCALE

MRIIS

Addalam RIP

MRIS Lulutan PIP

UCRIS

Apayao-Abulug ISIP

図8� 見直しマスタープランの�

� プロジェクト位置図

F88

F8

Figure 10.7.1 Location of Projects in Reviewed Master Plan

The Feasibility Study of the Flood Control Project

for the Lower C

agayan Riverin the Republic of the Philippines

JAPA

N IN

TERN

ATION

AL C

OO

PERATIO

N A

GEN

CY

Figure 10.9.1 Im

plementation Schedule for �

Review

ed Master Plan

2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 20301. Multipurpose Dam Project

(1) ○2. Flood Control Project

(1) Lower Reach Dike ○(2) ○(3) ○(4) ○(5) ○(6) ○(7) ○(8) ○(9) Resettlement ○(10) Supporting Measures ○(11) F.C. Pjts between Tuguegarao

3. Irrigation Project3.1 Irrigation Project to be Implemented by New Funding Sources(1) Reh. of CIADP (Iguig-Alcala- ○

Amulung PIS & Magapit PIS)(2) Tumauini Multipurpose P ○(3) ○(4) ○(5) Mallig RIS ○(6) ○(7) Dabubu IP ○(8) Delfin Albano PIP ○(9) ○(10) Sto. Nino PIP ○(11) Pinacanauan RIS ○(12) San Pablo-Cabagan IS ○(13) Zinundungan Irr. Ext. P ○(14) Nassiping PIP ○(15) Lallo West PIP ○(16) ○(17)(18) Santa Isabel PIP3.2 Irrigation Project to be Implemented by NIA and Other Agencies' Regular Fund(1) San Mariano PIP(2) Rizal IP(3) Debibi Groundwater IP(4) Dibuluan RIP(5) Villaverde IP(6) Lower Chico RIS(7) Upper Ilagan Western

Barangay PIP(8) Ilagan PIP(9) Santa Maria CPIS(10) Diversified/permanent Crops

,Pasture Land, Magat O&M(11) Supporting Measures(12) Other Projects

4. Watershed Management Project(1)(2)

5. Hydropower Project(1)(2)(3)(4)

Notes: ○ indicates projects to be implemented under the investment amount of Pesos 30 billion by the target year 2020.

Bank Protection

Diduyon Project

Reforestation

FFWS/Evacuation Center

and Siffu River Confluence

Matuno No.1 Dam Project

Alcala Amulung West PIP

Solana PIS-REP

Enrile PIP

Supporting Measures

Nueva Vizcaya Bagabag IS

Sabo Works

Tanudan Project

Mamil PIP

Ibulao Project

Siffu No.1 Dam Project

Tuguegarao Cut-off Channel

Alcala Buntun Dike

Tuguegarao and Enrile Dike

Gabut Cut-off ChannelSan Isidro Cut-off Channel Construction

D/D ConstructionD/D Construction

D/D Construction

D/D

D/D Construction

Construction

D/D Construction

D/D Construction

D/D ConstructionF/S

F/S D/D Construction

D/D Construction

D/D Construction

D/D Construction

ConstructionD/D

D/D Construction

D/D

D/D

Construction

Construction

ConstructionD/D

D/D Construction

D/D Construction

ConstructionD/D

D/D ConstructionF/S

F/S

F/S

F/S

F/S

F/S

F/S

F/S

F/S

F/S

Construction

Construction

F/S

F/S

D/D Construction

D/D Construction

D/D Construction

D/D Construction

D/D Construction

D/D ConstructionF/S

D/D ConstructionF/S

D/D ConstructionF/S

D/D ConstructionF/S

D/D ConstructionF/S

D/D ConstructionF/S

D/D ConstructionF/S

ConstructionConstructionF/S D/D

F/S D/DF/S D/D

D/D Construction

F89

The Feasibility Study of the Flood Control Project

for the Lower Cagayan River

in the Republic of the Philippines JA

PAN

INTERN

ATION

AL C

OO

PERATIO

N A

GEN

CY

Figure 10.10.1 O

rganization Chart of C

agayan River

Basin D

evelopment

CAGAYAN RIVER BASINDEVELOPMENT AUTHORITY

Project CoordinationCommittee

ProvincialDevelopment Council

RegionalDevelopment Council

City/MunicipalityDevelopment Council

Consultant

PMO WatershedManagement

· DENR· LGUs

PMO Flood Control· DPWH· NWRB· PAGASA· LGUs· OCD

PMO Land Use Management(Irrigation Development)

· DA· NIA

PMO Special Entities· AFMP· CEZA

Sub-PMOResettlement& LivelihoodProgram

LGUs/DA

Sub-PMOLower CagayanFlood ControlProject

DPWH/LGUs

Sub-PMOFlood Forecasting& Warning SystemProject

PAGASA/DPWH/NIA/NPC

Sub-PMOEvacuationSystem

OCD/RDCC/C-MDCC

F90

Alcala Amulung WestPump Irrigation Project

Babuyan Channel

Dummon River

Pared River

Chi

co R

iver

Tuguegarao River

Pinacanauan River

Caga

yan

R.Alcala

Nassiping

Magapit

Aparri

Enrile

Tuguegarao

Lasam

Gattaran

Lal-lo

Catugan Sur

Camalaniugan

Mabanguc

Iguig

Amulung

Solana

Santo Nino

Gabut COC

San Isidro COC

Tuguegarao COC

Alcala-Buntun Dike

Enrile Dike

Tuguegarao Dike

with tree zone

with tree zone

with tree zone

with tree zone

(Stage 1)(Stage 2)

Lal-lo Dike

Camalaniugan Dike

Gattaran Dike

Nassiping Dike

Mabanguc Dike

Catugan Dike

Lasam Dike

Amulung Dike

Iguig Dike

Road

Diking SystemBasin Boundary

LEGEND

Hilly Land

: Non-structural measures (evacuation system and resettlement area development) and supporting measuresare included.

Boundary of MunicipalityMunicipality

Phase 1 ImplementationPhase 2 Implementation

Bank Protection

Phase 3 ImplementationPhase 4 Implementation

N

The Feasibility Study of the Flood Control Projectfor the Lower Cagayan River

in the Republic of the PhilippinesJAPAN INTERNATIONAL COOPERATION AGENCY

Figure 11 Location of Projects for the Feasibility Study

The Feasibility Study of the Flood Control Projectfor the Lower Cagayan River

in the Republic of the PhilippinesJAPAN INTERNATIONAL COOPERATION AGENCY

0 5 10 15 20 25 kmScale

F91

Location of Flood Control Projects Subject to F/S

Figure 11.2.1

Design High Water Level

Dike DimensionsDesign Discharge Free

Board Top Width

(cu.m/s) (m) (m)

5,000 to 10,000 1.5 6

more than 10,000 2 7

Riverbank Tree ZoneFree

Board

Boundary of Administrative River Zone

Low Water ChannelDrain

Dike

Maintenance Road

Note;Riverbank tree zone is recommended in the viewpoints ofnature-oriented river improvment works and ecologicallandscape improvement in the river area.The tree zone is constructed along dike in the upstream ofAlcala provided that proper river management and maintenancesystems are estabilished in the DPWH Region 2 office andrelated LGUs.

7 m

4 m30 m

Visual Image of Earth Dike and Riverbank Tree Zone

10 m

Alcala Amulung WestPump Irrigation Project

Babuyan Channel

Dummon River

Pared River

Chi

co R

iver

Tuguegarao River

Pinacanauan River

Caga

yan

R.Alcala

Nassiping

Magapit

Aparri

Enrile

Tuguegarao

Lasam

Gattaran

Lal-lo

Catugan Sur

Camalaniugan

Mabanguc

Iguig

Amulung

Solana

Santo Nino

Gabut COC

San Isidro COC

Tuguegarao COC

Alcala-Buntun Dike

Enrile Dike

Tuguegarao Dike

with tree zone

with tree zone

with tree zone

with tree zone

(Stage 1)(Stage 2)

Lal-lo Dike

Camalaniugan Dike

Gattaran Dike

Nassiping Dike

Mabanguc Dike

Catugan Dike

Lasam Dike

Amulung Dike

Iguig Dike

Road

Diking SystemBasin Boundary

LEGEND

Hilly Land

Boundary of MunicipalityMunicipality

N

The Feasibility Study of the Flood Control Projectfor the Lower Cagayan River

in the Republic of the PhilippinesJAPAN INTERNATIONAL COOPERATION AGENCY

Figure 11 Location of Projects for the Feasibility Study

The Feasibility Study of the Flood Control Projectfor the Lower Cagayan River

in the Republic of the PhilippinesJAPAN INTERNATIONAL COOPERATION AGENCY

0 5 10 15 20 25 kmScale

Figure 11.2.3 Location of Flood Control Projects � in the Lower Cagayan

The Feasibility Study of the Flood Control Project for the Lower Cagayan River

in the Republic of the Philippines JAPAN INTERNATIONAL COOPERATION AGENCY

Figure 11.3.2 Inundation in Drainage Area 2 of AAWPIP

Qin: Discharge flowing into Drainage Area (DA)Qout: Discharge drained from DA through sluiceWLi, H: Inside inundation water levelWLo: Outside or Cagayan River flood water levelA: Inundated areaV: Inundated volume

Inundation in D2 Area at the time of the Cagayan River flood with 25-year probabilityAlcala Amulung West Pump IrrigationProject

0

2

4

6

8

10

12

14

16

18

20

1 25 49 73 97 121 145 169 193Time (hour)

Qin

Qout

WLi

WLo

A

V

WLi, WLo (masl), Qin, Qout (10m3/s), A (km2), V(million m3)

-30

-25

-20

-15

-10

-5

0

5

10

15

20

25

30

35

40

Ele

va

tio

n (

EL

m)

Gabut COC

San Isidro COC

Tuguegarao

COC

Design River

Bed Slope

Top of Dike

(EL m)

H.W.L.

(EL m)

Design River

Bed (EL m)

Commulative

Distance (km)

Station

Number

HWL Slope

H:1/750000

V:1/750

5

.27

6

.89

8

.14

9.3

0

10

.54

11

.79

12

.89

14

.09

14

.99

15

.80

16

.98

18

.05

19

.11

20

.08

21

.03

21

.62

22

.88

23

.51

24

.17

24

.86

26

.97

3.2

7

4.8

9

6.1

4

7.3

0

8.5

4

9.7

9

10

.89

12

.09

12

.99

13

.80

14

.98

16

.05

17

.11

18

.08

19

.03

19

.62

20

.88

21

.51

22

.17

22

.86

24

.97

-4

.91

-4

.61

-4

.26

-3

.94

-3

.59

-3

.24

-2

.92

-2

.52

-2

.22

-1

.95

-1

.56

-1

.21

-0

.86

-0

.31

1.1

6

2.0

7

4.0

3

4.9

8

6.0

0

7.0

1

9.1

3

1

.19

5

.94

11

.56

16

.80

22

.37

27

.96

33

.04

39

.39

44

.18

48

.52

54

.78

60

.47

65

.99

71

.78

79

.81

84

.84

95

.60

10

0.8

7

10

6.4

5

11

2.0

0

12

3.6

6

12

8.7

2

13

4.5

4

13

9.7

0

14

6.7

8

15

1.6

9

CG

0

+0

00

CG

5

+0

00

CG

1

0+

00

0

CG

1

5+

00

0

CG

2

0+

00

0

CG

2

5+

00

0

CG

3

0+

00

0

CG

3

5+

00

0

CG

4

0+

00

0

CG

4

5+

00

0

CG

5

0+

00

0

CG

5

5+

00

0

CG

6

0+

00

0

CG

6

5+

00

0

CG

8

0+

00

0

CG

8

5+

00

0

CG

10

0+

00

0

CG

10

5+

00

0

CG

11

0+

00

0

CG

11

5+

00

0

CG

13

0+

00

0

CG

13

5+

00

0

CG

14

0+

00

0

CG

14

5+

00

0

CG

15

0+

00

0

CG

15

5+

00

0

1/4500 1/5600 1/8500 1/5300

1/16000 1/5500

1/1300

Elevation of Embankment

H.W.L

25-year Flood Water Level

Left Bank Elevation

Right Bank Elevation

Mean River Bed

Deepest River Bed

Design River Bed

Suction Pipe Level

Cabagan

Sta. Maria Br.

Pinacanauan R.(R)

Tuguegarao R.(R)

Buntun Br.

Alcala

Pared R.(R)

Nassiping

Chico R.(L)

Dummon R.(R)

Zinundungan R.(L)

Magapit Pumping Sta.

Aparri

Magapit Br.

Solana Pumping Sta.

Iguig Pumping Sta.

Amulung Pumping Sta.

0.70

-2.37

-0.12

2.67

Lon

gitu

din

al P

rofile o

f Low

er Cagayan

Riv

er

Th

e F

ea

sib

ility S

tud

y o

f the F

loo

d C

on

trol P

roje

ct

for th

e L

ow

er C

ag

aya

n R

iver

in th

e R

ep

ub

lic o

f the P

hilip

pin

es

JA

PA

N IN

TE

RN

AT

ION

AL

CO

OP

ER

AT

ION

AG

EN

CY

Fig

ure 1

2.2

.2