GRDA Floodwater release bulletin – 3:00 p.m. 06/06/08

At 3PM on Friday, June 6:

• Grand Lake elevation was 745.66 feet.
• Grand Lake flood pool was at 5.82 percent capacity.
• At the direction of the United States Army Corps of Engineers, three (3) floodgates were open at Pensacola Dam, discharging 4,992 cubic feet per second (cfs) of water.
• Six (6) units were online at the Pensacola Dam powerhouse, releasing 13,204 cfs of water through generation.
• Releases through floodgates and generation totaled 18,196 cfs.
• Inflows into Grand Lake totaled 14,171 cfs.
• Lake Hudson elevation was 622.62 feet.
• Lake Hudson flood pool was at 16.88 percent capacity.
• At the direction of the United States Army Corps of Engineers, one (1) floodgate was open at Robert S. Kerr Dam, discharging 3,218 cfs of water.
• Three (3) units were online at Robert S. Kerr Dam powerhouse releasing 21,870 cfs of water through generation.
• Releases through floodgates and generation totaled 25,088 cfs.
• Inflows into Lake Hudson totaled 19,203 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.

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Grand River Dam Authority News Release
Contact: Justin Alberty
Corporate Communications Director
Grand River Dam Authority
(918) 256-5545
jalberty@grda.com
www.grda.com

For immediate release: 6/4/08