GRDA Floodwater release bulletin

At 3:30 PM on Thursday, April 3:

• Grand Lake elevation was 747.18 feet.
• Grand Lake flood control pool was at 19.40 percent capacity.
• At the direction of the United States Army Corps of Engineers, two (2) floodgates were open at Pensacola Dam, discharging 4,980 cubic feet per second (cfs) of water.
• Six (6) units were online at the Pensacola Dam powerhouse, releasing 13,991 cfs of water through generation.
• Releases through floodgates and generation totaled 18,971 cfs.
• Inflows into Grand Lake totaled 18,091 cfs.

• Lake Hudson elevation was 624.1 feet.
• Lake Hudson’s flood control pool was at 23.61 percent capacity.
• At the direction of the United States Army Corps of Engineers, one (1) floodgate was open at Robert S. Kerr Dam, discharging 6,865 cfs.
• Two (2) units were online at Robert S. Kerr Dam powerhouse, releasing 15,660 cfs of water through generation.
• Releases through floodgates and generation totaled 22,525 cfs.
• Inflows into Lake Hudson totaled 21,451 cfs.

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.