The U.S. Army Corps of Engineers will close access to the South Boat Ramp at Lake Mendocino effective Tuesday, Aug. 18, 9 a.m., due to low water levels. The lake’s other access point, the North Boat Ramp, has previously closed due to the same reason, and Mussel Dogs are no longer conducting inspections there. The two ramp areas, though, will remain open for day use and small non-motorized boating access to the lake.