GRDA Floodwater release bulletin

At 11:00 AM on Monday, May 5:

• Grand Lake elevation was 748.01 feet.
• Grand Lake flood control pool was at 27.62 percent capacity.
• At the direction of the United States Army Corps of Engineers, five (5) floodgates were open at Pensacola Dam, discharging 14,530 cubic feet per second (cfs) of water.
• Six (6) units were online at the Pensacola Dam powerhouse, releasing 14,061 cfs of water through generation.
• Releases through floodgates and generation totaled 28,591 cfs.
• Inflows into Grand Lake totaled 8,563 cfs.
• Lake Hudson elevation was 625.52 feet.
• Lake Hudson's flood control pool was at 32 percent capacity.
• At the direction of the United States Army Corps of Engineers, one (1) floodgate was open at Robert S. Kerr Dam, discharging 17,594 cfs of water.
• Three (3) units were online at Robert S. Kerr Dam powerhouse releasing 20,790 cfs of water through generation.
• Releases through floodgates and generation totaled 38,384 cfs.
• Inflows into Lake Hudson totaled 29,477 cfs.

The Grand River watershed consists of approximately 12,000 square miles of runoff in parts of Kansas, Missouri and Oklahoma. Of that total, over half—7,000 square miles—is uncontrolled runoff, meaning there is no reservoir to control it above the Pensacola Dam. However, the remaining 5,000 square miles of runoff passes through the John Redmond Dam, located near Burlington, Kansas, prior to reaching the Grand River system in Oklahoma.