Idaho Water Supply Committee Meeting Southwest Idaho Report April 11, 2014

Boise River Diversion Dam, April 11, 1909

63% of Boise System Capacity 76% of Payette System Capacity

Payette Basin Black Canyon Dam, 1924

Payette River Runoff at Horseshoe Bend April 1 – July 31 91% of Avg. 92% of Avg. 58% of Avg.

Cascade Reservoir Inflows April 1 – July 31 95% of Avg. 92% of Avg. 73% of Avg.

Deadwood Reservoir Inflows April 1 – July 31 92% of Avg. 98% of Avg.

Boise River Basin

Boise Basin Runoff April 1 – July 31 97% of Avg. 102% of Avg.

S. Fork Boise (Anderson Ranch) Runoff March 1 – July 30 93% of Avg. 51% of Avg.

Owyhee Basin Owyhee Reservoir near Leslie Gulch - 3/23/14

29% of normal runoff 18% of normal runoff

Owyhee Basin Runoff April 1 – June 30 10% of Avg. 16% of Avg.

Owyhee Basin Runoff January 1 – June 30 17% of Avg. 26% of Avg.

Owyhee Reservoir in wetter times