GRDA Floodwater Release Bulletin June 19 – 9:30 a.m.

At 9:30 AM on Thursday, June 19:

• Grand Lake elevation was 751.51 feet.
• Grand Lake flood pool was at 62.11 percent capacity.
• At the direction of the United States Army Corps of Engineers, one (1) floodgate was open at Pensacola Dam, discharging 5,106 cubic feet per second (cfs) of water.
• Six (6) units were online at the Pensacola Dam powerhouse, releasing 14,500 cfs of water through generation.
• Releases through floodgates and generation totaled 19,606 cfs.
• Inflows into Grand Lake totaled 13,149 cfs.
• Lake Hudson elevation was 631.73 feet.
• Lake Hudson flood pool was at 68.86 percent capacity.
• At the direction of the United States Army Corps of Engineers, one (1) floodgate was open at Kerr Dam, discharging 3,835 cubic feet per second (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 25,705 cfs.
• Inflows into Lake Hudson totaled 21,740 cfs.

Grand Lake crested at an elevation of 752.48 at 2 PM on Tuesday, June 17. Lake Hudson crested at 632.42 at 8PM on Monday, June 16.

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: 6/19/08