FLOOD POTENTIAL IN THE EASTERN GREAT BASIN

The following are generalized discussions of the flood potential due to snowmelt in the Eastern Great Basin drainage as of April 1, 2000. Discussions are segregated by state. It is important to understand that the potential for flooding may increase dramatically if snowmelt accelerates rapidly due to above normal temperatures or if significant rain events occur

 

UTAH: The potential for flooding due solely to snowmelt runoff is practically non-existent at this time in the Great Salt Lake and Sevier Lake Basins. Warm, dry conditions in April depleted much of the snowpack. Throughout the Great Salt Lake and Sevier Lake Basins the snowpack exists mostly at the higher elevations and is less than 60 percent of average. Peak flows are expected to be well below average and 3-4 weeks early for all streams. Snowmelt runoff volumes are expected to range from 50 to 75 percent of average.

 

IDAHO: The potential for snowmelt flooding in the Bear River Basin of Idaho practically non-existent. Much of the snowpack was depleted during April and is much below average throughout the area. Much below average runoff is anticipated.