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