fargo flood control southside flood protection prairie view estates fargo, nd october 2, 2008
DESCRIPTION
Fargo Flood Control Southside Flood Protection Prairie View Estates Fargo, ND October 2, 2008. Fargo. Moorhead. 25 th Street South. University Drive. Rose Coulee. Red River. 1997 Spring Flood – South of Fargo. Fargo. University Drive. Rose Coulee. Cass Co Drain 53. - PowerPoint PPT PresentationTRANSCRIPT
Fargo Flood Control
Southside FloodProtection
Prairie View Estates
Fargo, ND
October 2, 2008
1997 Spring Flood – South of Fargo
Rose CouleeRed River
25th S
treet
Sou
th
Fargo
University DriveMoorhead
1997 Spring Flood – South of Fargo
Rose Coulee
25
th S
treet
South
Cas
s C
o D
rain
53
Fargo
University Drive
1997 Spring Flood – South of Fargo
Cass
Co
Hw
y 81
25th Street S
outhInterstate 29 Rose Coulee
Wild Rice River
Red River
Fargo Moorhead
1997 Spring Flood – South of Fargo
Inte
rstate
29
Wild Rice River
25 th Street SouthSt. Benedict
Cass Co Hwy 16
1997 Spring Flood
Areas InundatedWith Floodwater
andEstimate of Areas
Protected byEmergency Measures
Interstate Hwy 94
Cass Co Hwy 6
Cass Co Hwy 16
Cass Co Hwy 14
Cass Co Hwy 18
Inte
rsta
te H
wy 2
9
Fargo
Oxbow
Horace
Moorhead
West Fargo
Shey
enne
Riv
er
Wild
Ric
e Riv
erRed
Riv
er
Red R
iver
Southside Flood
Control
Preliminary 100 & 500 Year
Floodplains – Red and Wild Rice Rivers
Oxbow
Horace
MoorheadWest Fargo
FargoInterstate Hwy 94
Inte
rsta
te H
wy 2
9
Southside Flood
Control
• Provide Protection from overland flooding that threatens the majority of properties south of I-94.
• Prevent extensive expansion of South Fargo Floodplain and mandatory flood insurance requirement.
• Provide growth area, helping to keep our region’s economy healthy
Southside Flood Control
RED RIVER AT FARGO - USGS GAGING STATIONHISTORICAL FLOOD DATA
0
5,000
10,000
15,000
20,000
25,000
30,000
35,000
1880 1890 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000
Years of Record
50 Year Discharge - 22,300 CFS
10 Year Discharge - 10,300 CFS
100 Year Discharge - 29,300 CFS
Pea
k D
isch
arge
(CFS)
1997 Spring Flood - 28,000 CFS
Southside Flood Control
North Dakota State Climate Office
Preliminary 100 Year Floodplain
Southside Flood
Control
Horace
Inte
rsta
te H
wy 2
9
Interstate Hwy 94
Preliminary 100 Year Floodplain with Line
of Protection
Southside Flood
Control
Horace
Interstate Hwy 94
Inte
rsta
te H
wy 2
9
Southside Flood
Control
After Project
Preliminary 100 Year Floodplain
Interstate Hwy 94
Inte
rsta
te H
wy 2
9
Horace
• FEMA levees• Channel extensions
(Red River & drain improvements)
• Storage inside of project
Project Flood Control Methods
Base Project
Southside Flood
Control
Wild Rice River Levee
Alternative
Issues Raised With Base Alternatives• Red River & Wild Rice River impacts
(Higher flood levels)
• Lost storage (Concern storage impact will simply move impacts upstream)
• Properties east of Hwy 81 and upstream receive no protection
Wild Rice River Levee Alternative
withChannel Extensions
& Supplemental Storage
Southside Flood
Control
100 Year Frequency - River Stage Changes in Inches
Base Project with Channel Extensions & Supplemental Storage
Location Red River LocationWild Rice
RiverInterstate 94 0 Cass Hwy 81 -8Rose Coulee 0 Cass Hwy 14 -8Briarwood -6 Cass Hwy 16 -276th Avenue -7 Interstate 29 -3Wild Rice River -8 Cass Drain 47 0Cass Hwy 16 -4 Cass Hwy 18 0Oxbow -1 State Hwy 46 0Cass Hwy 18 -1
Wild Rice River Levee Alternative
Wild Rice River Levees Alternative – Red River Impacts
Southside Flood Control
Red River Channel
Extension
North Dakota
Minnesota
Red River
Red RiverChannel
Extension
Typical Red River Cross-Section
1997 Spring Flood – Burritt Kennedy, Lemke and Harwood Groves Area
Red River
Fargo Moorhead
32nd to 40th Avenue – Floodplain Comparison
Option 1 - River Side Permanent FWOption 1 - River Side Permanent FWOption 2A/2B - River Side Combination Option 2A/2B - River Side Combination FWFW
1997 Spring Flood – South of Fargo
Cass
Co
Hw
y 81
25th Street S
outh
Interstate 29
Rose Coulee
Wild Rice River
Red River
Fargo Moorhead
Frontier
Wild Rice River Area Options
Option 1: No Wild Rice River Crossing ($5.5 Million)
Option 2 (Base): Wild Rice River Crossing ($15.5 Million)
Option 3: Mini-Bypass ($29.4 Million)
Option 1 – No Wild Rice River Crossing
Option 2 – Wild Rice River Crossing
Option 3 – Mini-Bypass
1997 Spring Flood – South of Fargo
Rose CouleeRed River
25th S
treet
Sou
th
Fargo
University DriveMoorhead
Existing 100 & 500 YearFloodplains – Red and Wild
Rice Rivers
Horace
West FargoFargo
52nd Avenue
Southside Flood Control
Univ
ersity
Driv
e
Preliminary 100 YearFloodplain – Red and Wild
Rice Rivers
West FargoFargoSouthside Flood Control
52nd Avenue
Univ
ersity
Driv
e
Insurance is required if: • You carry a federally backed mortgage
and• your home or business is in a high risk
area - such as: • 100-year floodplain• Special Flood Hazard Area or SFHA• Area flooded by 1% annual chance flood• Flood Zones A, AE, A1-30, AO, & AH
National Flood Insurance Program
Flood InsuranceHigh Risk Premium
Table
Horace
Fargo
Southside Flood
Control
Flood InsuranceModerate to Low
Risk Premium Table
Horace
Fargo
Southside Flood
Control
1997 Spring Flood – South of Fargo
Cass
Co
Hw
y 81
25th Street S
outh
Interstate 29
Rose Coulee
Wild Rice River
Red River
Fargo Moorhead
Frontier
Burritt-Kennedy Sand Bag Levees River Level 37.18 ft 4-5-06
Burritt-Kennedy Sand Bag Levees River Level 37.18 ft 4-5-06
Burritt-Kennedy Sand Bag Levees River Level 37.18 ft 4-5-06
Burritt-Kennedy Sand Bag Levees River Level 37.18 ft 4-5-06
Burritt-Kennedy Sand Bag Levees River Level 37.18 ft 4-5-06
Burritt-Kennedy Emergency Earth Levees River Level 37.18 ft 4-5-06
Burritt-Kennedy Emergency Earth Levees River Level 37.18 ft 4-5-06
Burritt-Kennedy Emergency Earth Levees River Level 37.18 ft 4-5-06
Burritt-Kennedy Sand Bag Levees River Level 37.18 ft 4-5-06
SE Cass PreliminaryAssessment District
Boundary
Southside Flood
Control
SE Cass WRD - Preliminary Assessment Analysis
Residential Property - Total Amount Assessed
Parcel Area in Acres
Parcel 0.15 0.25 0.50 1.00
Value 50' X 125' 75' X 150' 125' X 175' 200' X 215'
$25,000 $1,026 $1,332 $2,097 $3,626
$100,000 $1,583 $1,889 $2,653 $4,182
$150,000 $1,954 $2,259 $3,024 $4,553
$200,000 $2,324 $2,630 $3,395 $4,924
$350,000 $3,437 $3,743 $4,508 $6,037
$500,000 $4,550 $4,856 $5,620 $7,149
Total Number of Residential Parcels 9,033
Southside Flood Control
SE Cass WRD - Preliminary Assessment Analysis Residential Property - Average Annual Payment
Parcel Area in Acres
Parcel 0.15 0.25 0.50 1.00
Value 50' X 125' 75' X 150' 125' X 175' 200' X 215'
$25,000 $84 $109 $172 $297
$100,000 $130 $155 $218 $343
$150,000 $160 $185 $248 $373
$200,000 $191 $216 $278 $404
$350,000 $282 $307 $370 $495
$500,000 $373 $398 $461 $586
Assumed a 25 Year Payment Schedule at 6.50% Interest
Southside Flood Control
Water Resource DistrictAssessment District Process
• Send ballots to all property owners on assessment list.(One ballot per parcel owned)
• Conduct a project hearing
• Ballots returned by mail
• Count all ballots returned(Weighted by amount you pay)
• If more than 50% of ballots returned vote yesProject proceeds
Preliminary Assessment Analysis
Completed by Southeast Cass WRD
Reassessment of Benefits
As the undeveloped properties in the assessment district get developed, the WRD can reassess the benefits so all properties pay for similar benefits.
Wild Rice River Levee Alternative
withPreferred
Alignments
Southside Flood
Control
Project ScheduleDevelopment of options east of University Drive April-June 2008
City Commission Selection of preferred base alternative
July 14, 2008
Public input meetings April 15 - September 2008
Environmental Assessment July – December 2008
Consultant Selection July - December 2008
Begin Design December 2008
CLOMR Submittal July – December 2008
CLOMR Approval March 2009
ROW Acquisitions October 2008 – October 2009
Permitting September 2008 – April 2009
Special Assessment District September – December 2008
Begin Construction June 2009
Functional Completion March 2011
Final Completion July 2012
Comment Sheet
Southside Flood
Control
Questions / Discussion
Southside Flood Control