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Biologists from the Kansas Biological Survey prepare to lower the pipe that will take a core sample. The motor atop the pipe vibrates the tube to help it penetrate silt.
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A siltation core sample. Some lakes are almost half-filled with silt.
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John Redmond Reservoir.
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After pushing a siltation core from a tube biologists prepare to take samples.
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Members of the Kansas Biological Survey lower a tube to take a core sample at Kanopolis Lake.
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John Redmond Reservoir.
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After pushing a siltation core from a tube biologists prepare to take samples.
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Members of the Kansas Biological Survey lower a tube to take a core sample at Kanopolis Lake.
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Mark Jakubauskas adds a sedimentation sample to a bag held by Adam Blackwood.
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The smooth portion of the core sample on the left is the original soil. The rest is siltation.
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Sedimentation at Perry Reservoir has built up to a sizable island. The Kansas Biological Survey estimates there are 100 million cubic yards of sediment at the reservoir.
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Siltation at the bottom of Kansas lakes tell a story of siltation rates and more.
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Mark JJakubauskas with a siltation sample.
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Sedimentation at Perry Reservoir has built up to a sizable island. The Kansas Biological Survey estimates there are 100 million cubic yards of sediment at the reservoir.
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Scores of silt samples are taken from lakes being tested for siltation rates and pollution.
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All tools and equipment are cleaned between taking samples to prevent contamination.
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This once-popular boat ramp at the Paradise Point of Perry Reservoir now leads to 30-foot trees that grow on siltation.
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Members of the Kansas Biological Survey lower a tube to take a core sample at Kanopolis Lake.
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Mark Jakubauskas with a siltation sample.
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This once-popular boat ramp at the Paradise Point of Perry Reservoir now leads to 30-foot trees that grow on siltation.
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Biologist Mark Jakubauskas grimaces as he struggles to put a cap on the end of a core sample before it's pulled above water.
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Mark Jakubauskas with a siltation sample.
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This once-popular boat ramp at the Paradise Point of Perry Reservoir now leads to 30-foot trees that grow on siltation.
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Biologists spread an eight-foot long core sample of siltation to take samples for testing.
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A section of core sample of siltation at Kanopolis Lake.
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Biologist Mark Jakubauskas checks a small portion of a core sample.
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Mark Jakubauskas and Adam Blackwood check the mud at the base of a core sample for debris present when the lake was filled.
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Mark Jakubauskas with a siltation sample.
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The Kansas Biological Survey's core-drilling pontoon boat is being used at most Kansas reservoirs and lakes.
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Mark Jakubauskas with a siltation sample.
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