Sediment Shuts Down Mississippi River At St. LouisBarge traffic on the Mississippi River is at a standstill in both directions near St. Louis as crews scramble to clear sediment that's clogging the waterway.
Sediment From Farms Threatens Scenic Lake PepinEarly explorers described Lake Pepin as crystal clear with abundant fish and waterfowl. But the water flowing into Lake Pepin these days is a milky brown, and scientists say the upper third of the scenic lake could become filled in with sediment by the end of the century.

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