(credit: Jupiter Images)

Sediment Shuts Down Mississippi River At St. Louis

Barge 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.


(credit: Explore Minnesota)

Sediment From Farms Threatens Scenic Lake Pepin

Early 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.