Fargo Flood Control

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Fargo Flood Control Southside
Flood Protection Chrisan East Subdivision
Public Meeting August 26, 2008
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76th Avenue
Cass Co Hwy 81
1997 Spring Flood South of Fargo
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West Fargo
Fargo
Southside Flood Control
Chrisan East - Existing 100 yr Floodplain
Horace
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West Fargo
Fargo
Southside Flood Control
Chrisan East - Preliminary 100 yr Floodplain
Horace
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West Fargo
Fargo
Southside Flood Control
Chrisan East Existing and Preliminary 100
yr Floodplains
Horace
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Background Activities

• Previous Public Involvement
• March 2008 (Public Meeting)
• June 2008 (Public Meeting)
• August 5, 2008 (Site Staking)
• Options Considered (Prelim. Design and Soils)
• Full Protection (Option 1A/B/C/D)
• Partial Protection (Option 2A/2B)
• Request for Comments/Questionnaire (8/6/2008)
• 26 of 35 Returned (Thru 8/25/08)
• Technical Team Recommendation
• Full Protection - Option 1D

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Chrisan East Subdivision

• Option 1D Full Levee
• Components
• Earthen Levee (BFE3)
• 12 Property Acquisitions
• 20 Structures Protected
• Project Costs
• Construction 851,000
• Real Estate 3,064,000
• Total 3,915,000

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Chrisan East Subdivision
Landowner Comment Project Options
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Chrisan East Subdivision
Landowner Comment Project Options
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Chrisan East Subdivision
Landowner Comment Project Options
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Chrisan East Subdivision
Cost Estimate
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Chrisan East Subdivision
Landowner Comment Funding Scenarios

• Funding Scenario 1
• 50 State of North Dakota,
• 25 City of Fargo,
• 25 Chrisan (Special Assessment).
• Under this option, the 25 cost share per
  remaining home for the full protection options
  would range from 30-50,000.
• Funding Scenario 2
• Request for Future Annexation to City of Fargo.
  Under this option assessments would be determined
  using the same calculation proposed for
  properties currently in the City of Fargo.
  Currently this is estimated to be approximately
  4,500 to 5,000 per home.

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Chrisan East Subdivision
Cost Estimate
(1) Based on an estimated 4750 per home that
is protected.
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Annexation

• Property owners must petition for annexation.
• Agreement will be drafted.
• Possible Terms of agreement
• Deferral Period (Petitioners may not protest
  annexation after deferral period)
• Flood Protection funding
• Must be approved by City Commission.

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Project Schedule
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Southside Flood Control
Questions / Discussion
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Additional Information
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Assessed Value / Lot Size
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Fargo
Moorhead
Interstate 29
Rose Coulee
Frontier
25th Street South
Red River
Cass Co Hwy 81
Wild Rice River
1997 Spring Flood South of Fargo
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Fargo
Interstate Hwy 94
West Fargo
Southside Flood Control
Moorhead
Preliminary 100 Year Floodplain
Horace
Interstate Hwy 29
Oxbow
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Fargo
Interstate Hwy 94
West Fargo
Southside Flood Control
Moorhead
After Project Preliminary 100 Year
Floodplain With Internal 100 Year Floodplain
Horace
Interstate Hwy 29
Oxbow
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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 for Fargo, helping to keep
  our regions economy healthy

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Project Flood Control Methods

• FEMA levees with and without diversion channels
• Channel extensions
• (Red River drain improvements)
• Storage inside of project
• Storage in upstream watershed

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Southside Flood Control
STORAGE SUMMARY Existing effective storage
6,000 Acre-Ft Base project 0
Acre-Ft Channel extension/storage 2,000
Acre-Ft Supplemental storage 4,000
Acre-Ft Upstream dams 75,000 Acre-Ft (External
storage)
STORAGE
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• Typical Chrisan East - 4,500-5,000/home
• 150-200K (Approximately 1 ac)

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Southside Flood Control
Wild Rice Levee Option Including Mini-Bypass
Alternative
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Southside Flood Control
Levees east of Cass Co. Hwy 81