As of 3 p.m. Tuesday, the Grand Lake flood control pool had dropped to 31.71 capacity, according to a report by the Grand River Dam Authority (GRDA).
The lake’s flood control pool topped out Friday at around 65.3 percent capacity.
Tuesday Grand Lake elevation had dropped to 748.41 feet.
It crested Friday at 751.92 feet, according to the GRDA spokesperson Justin Alberty.
At the direction of the United States Army Corps of Engineers, five floodgates were open at Pensacola Dam, discharging 15,730 cubic feet per second (cfs) of water Tuesday.
Releases through floodgates and generation totaled 27,541 cfs.
Inflows into Grand Lake totaled 15,445 cfs.
Lake Hudson’s elevation Tuesday was 626.52 feet, with the flood control pool was at 38.08 percent capacity.
Lake Hudson crested Saturday around noon at 631 feet, and the flood control pool topped out around 64.57 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.
Releases through floodgates and generation totaled 42,313 cfs.
Inflows into Lake Hudson totaled 29,149 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.