This beautiful, wild watershed is located in northern San Diego County, covering roughly 360,000 acres (562 square miles). This makes it the largest watershed completely within San Diego County. It spans from Hot Springs Mountain (at 6,535 feet, the highest peak in San Diego County) to the east, all the way to the lovely Oceanside beaches to the west. In between these two points, the San Luis Rey River flows 55 miles before emptying into the Pacific Ocean. This river migrates between surface water flow and sub-surface water flow, depending on where it is within our watershed.
San Luis Rey Watershed Council
Maps of the San Luis Rey Watershed
