U.S. Army Corps of Engineers San Francisco District moved its barge boat from Lake Sonoma to Lake Mendocino Feb. 27, passing through Hopland as part of its emergency operations for Redwood Valley County Water District to use as a floating platform to extend its ability to supply water to 4,000 residents. The 35-foot aluminum landing craft-style boat can operate in adverse weather and has speeds of 20 knots. Drought water levels are hovering around 30 percent of the Lakes 122,000 acre feet of capacity.