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Friday, Apr. 29, 2016

Dredging to expand

Thursday, August 15, 2002

Commission finds $270,000 more, work extends east, but silt is scarce

As additional money flows into the state dredging project on Storm Lake, one DNR construction engineer says it has been difficult to find the silt they want to remove.

"Although there's silt in the lake, a lot of it is only a foot deep, then you run into sand and gravel and you don't want to take sand and gravel out of the lake," said Dick Wilson, Iowa Department of Natural Resources facilities engineer for construction services.

The current dredge being used by L.W. Matteson Dredging needs at least three feet of silt in order to operate efficiently, Wilson said. However, on the western portion of the lake, dredge crews have found a percentage of sand, gravel and clay - enough to decrease pumping production, he said.

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