P1250095194cEJNU

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Southeast Cass Water Resource District, City of
Fargo Southside Flood Protection Project
Update, Assessment Methodology March 3, 2009
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Interstate Hwy 94
Fargo
Southside Flood Control
Moorhead
West Fargo
Preliminary 100 500 Year Floodplains Red and
Wild Rice Rivers
Interstate Hwy 29
Horace
Oxbow
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Southside Flood Control
Wild Rice River Levee Alternative with Preferred
Features

• FEMA levees and Floodwalls
• Channel extensions
• (Red River drain improvements)
• Storage inside of project

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Southside Flood Control
Wild Rice River Levee Alternative Selected
Plan River Stage Changes 100 Year Flood
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Interstate Hwy 94
Fargo
Southside Flood Control
Moorhead
West Fargo
Existing Sheyenne River Preliminary Red Wild
Rice River 100 Year Floodplains with Line of
Protection
Interstate Hwy 29
Horace
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Interstate Hwy 94
Fargo
Southside Flood Control
Moorhead
West Fargo
After Project Existing and Preliminary 100 Year
Floodplains
Interstate Hwy 29
Horace
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Southside Flood Control
Wild Rice River Levee Alternative with Preferred
Features
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Southside Flood Control
Wild Rice River Mini-Bypass
Base Alignment Levee Cost - 16.8M Preferred
Alignment Mini-Bypass Cost - 31.8M
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Mini-Bypass
Heritage hills
Ulphie Subdivision
Red River
Wild Rice River Estates
Cass County Highway 81
100th Ave
Kensington Place
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Southside Flood Control
32nd to 40th Avenues
Base Alignment University Drive Cost -
7.6M Riverside Protection Options Cost 34.4M
37.0M
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32nd to 40th Avenue

• Base Option University Drive
• Components
• Alignment generally parallel University Drive
• Permanent Floodwall (BFE3)
• Earthen Levee (BFE4)
• Approx. 350 Structures Remain Unprotected
  (99.M)
• Emergency Operation Required
• Cost Estimate
• Construction 6.6M
• Real Estate 1.0M
• Total Project Cost 7.6M

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32nd to 40th Avenue

• Riverside Protection Options
• Protect Approx. 350 Additional Structures
• Options
• Option 1 River Side Permanent
• FW w/ Openings
• Option 2 River Side
• Combination FW w/ Openings
• Option 3 River Side Permanent
• FW w/o Openings
• Cost Estimate
• Total Project Cost 34.4-37.0M

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Floodwall Example
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• Example Wall Concepts
• Option A Prairie Style

• Option B Simulated Brick and Cedar Fence

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Option 1 - River Side Permanent FW w/ openings
Option 2 - River Side Combo FW w/ openings
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Closure Types (Invisible FW vs. Gates)

• Invisible Floodwall (Oak Grove)
• Photos from Flood Control America, Inc

Lower Cost Off-site Storage

• Hinged Flood Gates
• Photos from Presray, Inc. and Walz and Krenzer,
  Inc.

Quicker Install On-site Storage Less Seepage
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Pros-Cons
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Southside Flood Control
River Vili
Riverside Protection Options Cost 5.1M 6.1M
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River Vili
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River Vili

• Similar Issues to River Drive Area
• Smaller area 41 properties
• Last presented to the public 11/13/08
• Comment Summary
• 36 comments received
• 19 of 20 Interior Respondents Supportive
• 8 of 16 River Respondents Supportive
• 27 of 36 Support Flood Protection (75)
• Includes 3 potential floodwall openings
• Meet again in March

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Southside Flood Control
Chrisan East
Riverside Protection Options Cost 4.85M
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Southside Flood Control
Chrisan East
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Project Schedule Ongoing Activities

• Environmental Assessment
• Conditional Letter of Map Revision (CLOMR)
• Assessment Analysis

Next Steps

• Design
• Permitting

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Southside Flood Control Estimated Cost Summary
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Preliminary Assessment Analysis
Preliminary Assessment District Base
Area Number of Properties 11,810 Area of
Property 23,100 Acres 37.50 Sections
Value of Property 2.42 Billion
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Preliminary Assessment Analysis

• DIRECT BENEFIT CATEGORIES
• Developed / Undeveloped
• Preliminary 100 Yr Floodplain (100 Benefit)
• Preliminary 500 Yr Floodplain (20 30
  Benefit)
• Above Prelim. 500 Yr Floodplain (10 Benefit)
• INDIRECT BENEFITS
• Transportation
• Infrastructure protection (sanitary sewer)

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Preliminary Assessment Analysis
Preliminary Assessment Categories Map Direct
Benefits - 45.31 Million
88TH AVE S
DRAIN 27
CASS CO HWY 17
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Preliminary Assessment Analysis

• Undeveloped (Ag) Property
• Total cost per acre 100.00
• Total cost per quarter 16,000.00
• Average annual cost per acre 8.20
• Total cost per quarter 1,312.00
• Assumed a 25 year payment schedule at 6.50
  interest

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Preliminary Assessment Analysis
100 Benefit, 100 year elev. lt25 feet from
structure
30 Benefit 100 year elev. gt25 feet from structure
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SOUTHSIDE FLOOD CONTROL
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SOUTHSIDE FLOOD CONTROL
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Southside Flood Control
Estimated Costs to 150,000 Home

• Cost of flood insurance
• 1,500/- Annually
• Total paid during life of a 20 year loan-30,000

• Cost of special assessment
• 3,000 Total Assessed
• 250 Annually includes interest
• Total paid over 25 years - 6,250 including
  interest

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SOUTHSIDE FLOOD CONTROL
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SOUTHSIDE FLOOD CONTROL
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Southside Flood Control Estimated Cost Summary
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Preliminary Assessment Analysis
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Southside Flood Control Estimated Cost Summary
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Southside Flood Control Estimated Cost Summary
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Water Resource District Assessment District
Process

• Create assessment district
• Prepare a preliminary assessment list
• Send ballots to all property owners on assessment
  list.
• One ballot per parcel owned
• Ballot value based on proposed assessment
• Conduct a project hearing
• Ballots returned by mail

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Water Resource District Assessment District
Process

• Count all ballots returned
• Weighted by amount you pay
• If more than 50 of ballots returned vote yes
  project may proceed
• Conduct an assessment hearing
• Finalize assessment list

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Water Resource District Assessment District
Process
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.
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Informational Public Meetings Assessments

• March 16, Discovery School 700 PM
• March 18, Horace Community Center 700 PM
• March 24, Discovery School 700 PM
• April 2, Discovery School 700 PM
• Additional meetings to be announced.

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Southside Flood Control
Questions / Discussion