Matanuska-Susitna Borough

Flood Plain Development and Information

Regulatory changes to flood insurance rates and subsidized policies, will affect MAT-SU Borough property owners living in a Special Flood Hazard Area. See the attached Biggert-Waters Presentation for more information.

A Flood Plain Development Permit is required prior to rebuilding or any other development within a Federally Designated Flood Hazard Area.

To determine if your project is within a Designated Flood Hazard Area please contact the Permit Center and request a “Flood Hazard Determination. Please provide the street address, subdivision name, lot and block, or the township, range, section, and parcel number.

If your property is located within the 100 year flood, there is at least a 1% chance each year the land may be subject to a "100 year" flooding event.

In an effort to reduce losses associated with these flooding events and reduce the amount of losses, the Federal Government, through the Federal Emergency Management Agency (FEMA), requires all structures to obtain Flood Hazard Insurance. To be eligible to receive Flood Hazard Insurance all new development must conform to the minimum standards of development as described in MSB 17.29 Flood Damage Prevention.

A complete application must include both the MSB Flood Hazard Development Permit and the Elevation Certificate. A Registered Engineer or Surveyor must complete the elevation certificate.

Management Studies

Flood Plain Management Studies

South Central Alaska Floods of 1971-1972
Download
Matanuska River Watershed, Review of Resources, 1998
Download
Matanuska River Bank Erosion Inspection 10/21/03 Trip Report
Download
Lower Tanana River & Tributaries
Download
Kroto, Rabideux, Trapper & Peters Creeks
Download

Damage and Prevention

Preparedness is the best way to be ready for a flood. Learn if your home is in a Flood Zone or accessed by crossing a flood zone. See our Emergency Preparedness site for how to be ready.

Attention Surveyors & MSB Residents

FEMA Flood Insurance Study 2011
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Insurance Federal Emergency Management Agency (FEMA) or 1-800-427-4661
Off-Site Link

Flood Damage Mitigation

Be "FloodSafe"- Flood preparation and safety tips from FEMA.
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FEMA Flood Insurance Claims Handbook
Off-Site Link
National Weather Service Advanced Hydrologic Prediction Service
Off-Site Link
Red Cross Flood Preparation Site
Off-Site Link
Shoreline Landscaping
Download

Flood Damage Prevention

Designing Flood Proof Homes in Alaska
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FEMA Base Flood Elevation Appeals Criteria
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FEMA Base Flood Elevation Appeals Criteria
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Flood Data Bibliography for Alaska
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Flood Hazard Development Permit Application
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Mat River Erosion Study

The U. S. Department of Agriculture and the Natural Resources Conservation Service (NRCS) directed the study below. The study was conducted by MWH Global.

Matanuska River Erosion Study

Matanuska River Erosion Study
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Matanuska River Erosion Task Force Interim Report, February 1992
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State of Alaska Erosion Management Policy by Administrative Order No. 175
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Flood Plain Mapping

Below is a selection of our the current FEMA Firm Panels. To see all panels or, to compare the current DFIRM Panels with historic FIRM Maps, see our Flood Insurance Rate Maps page.

DFIRM Panels

Panel 2755E
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Panel 2760E
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Panel 2765E
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Panel 2770E
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Panel 2780E
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