Floodwater release bulletin

At 3 PM on Tuesday, March 25:

• Grand Lake elevation was 748.41 feet.
• Grand Lake flood control pool was at 31.71 percent capacity.
• At the direction of the United States Army Corps of Engineers, five (5) floodgates were open at Pensacola Dam, discharging 15,730 cubic feet per second (cfs) of water.
• Five (5) units were online at the Pensacola Dam powerhouse, releasing 11,811 cfs of water through generation.
• Releases through floodgates and generation totaled 27,541 cfs.
• Inflows into Grand Lake totaled 15,445 cfs.

• Lake Hudson elevation was 626.52 feet.
• Lake Hudson’s flood control pool was at 38.08 percent capacity.
• At the direction of the United States Army Corps of Engineers, two (2) floodgates were open at Robert S. Kerr Dam, discharging 27,193 cfs.
• Two (2) units were online at Robert S. Kerr Dam powerhouse, releasing 15,120 cfs of water through generation.
• Releases through floodgates and generation totaled 42,313 cfs.
• Inflows into Lake Hudson totaled 29,149 cfs.

Grand Lake's elevation has been falling since a crest of 751.92 feet on Friday, March 21. Lake Hudson's elevation has been falling since a crest of 631 feet on Saturday, March 22.

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.