GRDA Floodwater Release Bulletin

At 10:30 AM on Friday, April 11:

• Grand Lake elevation was 751.15 feet.
• Grand Lake flood control pool was at 57.17 percent capacity.
• At the direction of the United States Army Corps of Engineers, eleven (11) floodgates were open at Pensacola Dam, discharging 53,790 cubic feet per second (cfs) of water.
• Six (6) units were online at the Pensacola Dam powerhouse, releasing 13,775 cfs of water through generation.
• Releases through floodgates and generation totaled 67,565 cfs.
• Inflows into Grand Lake totaled 110,984 cfs.
• Lake Hudson elevation was 632.64 feet.
• Lake Hudson’s flood control pool was at 73.43 percent capacity.
• At the direction of the United States Army Corps of Engineers, three (3) floodgates were open at Robert S. Kerr Dam, discharging 62,427 cfs of water.
• Three (3) units were online at Robert S. Kerr Dam powerhouse releasing 22,680 cfs of water through generation.
• Releases through floodgates and generation totaled 85,107 cfs.
• Inflows into Lake Hudson totaled 105,370 cfs.

The most recent crest predictions from the United States Army Corps of Engineers were for a Grand Lake crest of 753.10 feet early on Sunday, April 13 and a Lake Hudson crest of 633.40 early on Saturday, April 12.

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.