Flood Preparedness

Although there are three large dams on the Boise River, it is still subject to flooding. Flows have reached or exceded the 7000 cubic feet per second (cfs)flood stage five times since 1982. Flows reached 9840 cfs in 1983, and 8260 cfs in 1998. Many people are impacted when this occurs. Most homeowner's policies do not cover floods.

In terms of death, flash flooding is the most deadly natural hazard. Certain gulches in Ada County pose a flash flood threat. The highest risk drainages include: Cottonwood, Hulls, Crane, and Stuart. In 1996 a wildfire burned these gulches and the resulting lack of vegetation has increased the flash flood threat. Check out these flood-related materials:

The drainages with the highest risk of deadly flash floods include: Seaman, Pierce, Polecat, Stuart, Crane, and Hulls Gulches, as well as Cottonwood Creek. See the link on the left.

Also check out these flood-related documents.

Flood Fact Sheet - FEMA (254kb)
Are You Ready for a Flood or Flash Flood? (163kb)
Mold & Mildew in Your Flood Damaged Home (234kb)

Serving Ada County, Ada County Highway District, Boise, Eagle, Garden City, Kuna, Meridian, & Star.