GRDA Floodwater release bulletin

At 3:00 PM on Friday, April 25:

• Grand Lake elevation was 750.95 feet.
• Grand Lake flood control pool was at 55.75 percent capacity.
• At the direction of the United States Army Corps of Engineers, six (6) floodgates were open at Pensacola Dam, discharging 28,590 cubic feet per second (cfs) of water.
• Six (6) units were online at the Pensacola Dam powerhouse, releasing 14,316 cfs of water through generation.
• Releases through floodgates and generation totaled 42,906 cfs.
• Inflows into Grand Lake totaled 58,432 cfs.
• Lake Hudson elevation was 629.75 feet.
• Lake Hudson’s flood control pool was at 56.41 percent capacity.
• At the direction of the United States Army Corps of Engineers, two (2) floodgates were open at Robert S. Kerr Dam, discharging 27,286 cfs of water.
• Three (3) units were online at Robert S. Kerr Dam powerhouse releasing 14,316 cfs of water through generation.
• Releases through floodgates and generation totaled 41,602 cfs.
• Inflows into Lake Hudson totaled 54,865 cfs.

As of 3:00 PM on Friday, April 25, the U.S. Army Corps of Engineers is predicting that Grand Lake will crest at 751.30 late Sunday, April 27. The prediction for Lake Hudson is slightly below 630.00 late Friday, April 25.

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.