Floodwater release bulletin

At 10 AM on Wednesday, March 19:

• Grand Lake elevation was 748.86 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 37,576 cubic feet per second (cfs) of water.
• Six (6) units were online at the Pensacola Dam powerhouse, releasing 13,733 cfs of water through generation.
• Releases through floodgates and generation totaled 51,309 cfs.
• Inflows into Grand Lake totaled 142,840 cfs.

• Lake Hudson elevation was 628.29 feet.
• Lake Hudson’s flood control pool was at 46.97 percent capacity.
• At the direction of the United States Army Corps of Engineers, four (4) floodgates were open at Robert S. Kerr Dam, discharging 66,158 cfs.
• Two (2) units were online at Robert S. Kerr Dam powerhouse, releasing 13,500 cfs of water through generation.
• Releases through floodgates and generation totaled 79,658 cfs.
• Inflows into Lake Hudson totaled 108,332 cfs.

As of 10 AM on Wednesday, March 19, the United States Army Corps of Engineers was predicting that Grand Lake would crest at 752 feet on Friday morning, March 21. The prediction for Lake Hudson was 631 feet by Friday afternoon, March 21.

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.