Sun-baked mud is cracking along the bare margins of Lake Mendocino, the reservoir near Ukiah that helps sustain river flows for imperiled fish and supply water to 600,000 people in Sonoma and Marin counties.

The shoreline is about 100 yards out, leaving the boat ramp near Coyote Valley Dam high and dry. No people were in or on the water Monday, and geese were feasting on whatever the lake bed gave up.