LAS VEGAS (KLAS) — In an effort to reduce caddisfly populations along the Colorado River near Laughlin and Bullhead City, water levels will drop for nine hours on Tuesday, Sept. 16.

Flows from Davis Dam will be reduced to about 2,300 cubic feet per second — about half the rate of normal overnight flows. That will expose caddisfly pupae and larvae to feeding by birds and bats along the river channel, according to a Friday news release from the U.S. Bureau of Reclamation.

Caddisflies can be pests outdoors along the Laughlin Strip and downstream along riverbanks in Bullhead City.

The reduced flows will be from 5 a.m. to 2 p.m. MST (4 a.m. to 1 p.m. PST).

People on the river for recreation should be careful as lower river flows might expose or create hazards such as sandbars and unstable r

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