Apr 26 Jamestown Reservoir reaches historic first
as seen here on JamestownUSA.com KCSi-T.V. News
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Jamestown -- Bureau of Reclamation (Reclamation) officials have confirmed (Sun. Aprl 26th) the first official spill through the Jamestown Reservoir spillway. This is the first time the spillway has been used since the completion of the dam in February 1954.
........more story below 4/24 video.....
According to instrumentation used by Reclamation, the Reservoir level reached 1454.04 at 1 p.m. CDT. According to Reclamation, water spills when Jamestown Reservoir reaches elevation of 1,454 feet or about 221,000 acre-feet of water.
“An acre foot of water is about the size of a football field covered with one foot of water,” said Reclamation spokesman Mike Odle.
The spillway is basically a giant 18 inch cement funnel. Rather than spilling over the dam, high waters spill into the funnel and are released through a system called outlet works and then into the James River.
The funnel's largest diameter is 13.4 feet and narrows to about 9.6 feet. It is designed to handle a maximum of about 1.3 million gallons per minute, which occurs when the lake level rises to 10.4 feet above the level of the spillway.
In 1997, the water level at the reservoir was nine feet below the spillway approximatley 1,445 feet.
Reclamation in cooperation with the U.S. Army Corps of Engineers has reduced flows from the reservoir’s controlled spillway to 1500 cfs.
The public can view the Jamestown Reservoir spillway camera online at JamestownUSA.com or live exclusively on CSi Cable channels 68 & 10.
