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
See Notice
Matanuska River Watershed, Review of Resources, 1998
See Notice
Matanuska River Bank Erosion Inspection 10/21/03 Trip Report
See Notice
Lower Tanana River & Tributaries
See Notice
Kroto, Rabideux, Trapper & Peters Creeks
See Notice

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
See Notice
Insurance Federal Emergency Management Agency (FEMA) or 1-800-427-4661
See Notice

Flood Damage Mitigation

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

Flood Damage Prevention

Designing Flood Proof Homes in Alaska
See Notice
FEMA Base Flood Elevation Appeals Criteria
See Notice
FEMA Base Flood Elevation Appeals Criteria
See Notice
Flood Data Bibliography for Alaska
See Notice
Flood Hazard Development Permit Application
See Notice

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
See Notice
Matanuska River Erosion Task Force Interim Report, February 1992
See Notice
State of Alaska Erosion Management Policy by Administrative Order No. 175
See Notice

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
See Notice
Panel 2760E
See Notice
Panel 2765E
See Notice
Panel 2770E
See Notice
Panel 2780E
See Notice