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Inspection Reveals Issues with Gavins Point Dam
Gavins Point Dam
The Missouri River fell nearly eight-feet on Wednesday as the U.S. Army Corps of Engineers shut off the flow from Gavins Point Dam near Yankton to inspect the concrete slabs below the spillway gates. Three teams used sophisticated radar to survey for damage. Dave Becker, the Corps' operations manager for the dam, says they've seen warning signs develop since last year's historic flooding across Iowa and Nebraska. (play audio :25 “not right.”)
Becker says the record flows that brought the prolonged, record flooding last summer caused damage under the concrete. (play audio :17 “that gravel.”)
He says the concrete is all fine but there's at least one large "void" in the gravel. Becker says crews used the low water level on Wednesday to get a closer peek at the problem areas. (play audio :20 “what they got.” (2x)
Becker says there are no structural issues with the spillway and they are not worried about any leaking. He says they hope to get the spillway repaired before next spring. Flows on the river were restored about midnight and the river's level was back to normal yesterday.
© Nebraska Radio Network
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Hiawatha, Ks 66434