Preliminary Idaho Flood Maps

New and Preliminary Idaho Flood Maps provide the public an early look at a home or community’s projected risk to flood hazards. This page is for homeowners who want to understand how their current effective Flood Map may change when the preliminary FEMA maps becomes effective.

Releasing Preliminary Idaho Flood Maps

The release of preliminary flood hazard maps, or Flood Insurance Rate Maps (FIRMs), is an important step in the mapping lifecycle for a community. This release provides community officials, the public, and other stakeholders with their first view of the current flood hazards, which include changes that may have occurred in the flood risks throughout the community, or county, since the last flood hazard map was published.

Property Owners Can Take Advantage of “Grandfathering”

If a property is mapped into a high-risk area (shown as a zone labeled with letters starting with “A” or “V”) and the owner has a mortgage through a federally regulated or insured lender, flood insurance will be required when the FIRM becomes effective. Lenders do have the option to make the purchase of flood insurance a condition for their loans at any time, and some lenders may institute such requirements in advance of the maps becoming effective.

Preliminary Flood Map Review:

Idaho Flood Maps

Ada County
Adams County
Bannock County
Bear Lake County
Benewah County
Bingham County
Blaine County
Boise County
Bonner County
Bonneville County
Boundary County
Butte County
Camas County
Canyon County
Caribou County
Cassia County
Clark County
Clearwater County
Custer County
Elmore County
Franklin County
Fremont County
Gem County
Gooding County
Idaho County
Jefferson County
Jerome County
Kootenai County
Latah County
Lemhi County
Lewis County
Lincoln County
Madison County
Minidoka County
Nez Perce County
Oneida County
Owyhee County
Payette County
Power County
Shoshone County
Teton County
Twin Falls County
Valley County
Washington County


Current & New FEMA Flood Maps