GRDA Floodwater Release Bulletin

At 4:45 PM on Thursday, April 10:

• Grand Lake elevation was 748.92 feet.
• Grand Lake flood control pool was at 33.52 percent capacity.
• At the direction of the United States Army Corps of Engineers, eleven (11) floodgates were open at Pensacola Dam, discharging 37,972 cubic feet per second (cfs) of water.
• Six (6) units were online at the Pensacola Dam powerhouse, releasing 13,964 cfs of water through generation.
• Releases through floodgates and generation totaled 51,936 cfs.
• Inflows into Grand Lake totaled 108,108 cfs.
• Lake Hudson elevation was 627.75 feet.
• Lake Hudson’s flood control pool was at 42.10 percent capacity.
• At the direction of the United States Army Corps of Engineers, two (2) floodgates were open at Robert S. Kerr Dam, discharging 37,286 cfs of water.
• Three (3) units were online at Robert S. Kerr Dam powerhouse releasing 20,250 cfs of water through generation.
• Releases through floodgates and generation totaled 57,536 cfs.
• Inflows into Lake Hudson totaled 110,785 cfs.

The most recent crest predictions from the United States Army Corps of Engineers were for a Grand Lake crest of 752.50 feet on Saturday, April 12 and a Lake Hudson crest of 632.40.

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.