Picture three-and-a-half football fields with earth piled onto them — piled as tall as the Empire State Building. That’s how much sediment flows into Tuttle Creek Lake each year. After decades of this, mud has eaten up so much space that about half of the lake near Manhattan has disappeared. Put another way, about half of its volume for storing water is gone. That’s why the U.S. Army Corps of Engineers and the Kansas Water Office will start a first-of-its-kind pilot test this week to try to clear out some mud. They’ll use an underwater dredging technique that they hope will loosen some of the sediment and allow it to flow out of the dam gates and continue moving downstream in the Big Blue and Kansas rivers.
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