The Sand Harbor boat ramp will close on August 5 due to low water conditions. This closure will prevent boats from being damaged during launching and also protect the end of launch lanes from harm. The parking lot will remain open for non-motorized, carry-in boat access. The “Cave Rock” boat ramp closed Monday . Power boaters should use other launch ramps at Lake Tahoe. Public launch facilities are available at Lake Forest, Obexers and the Tahoe Keys Marina.