Old Mission Dam

The Old Mission Dam, located in San Diego, California was the first major irrigation project on the Pacific coast. The stone and cement dam is 220 ft long (67 m), 13 ft wide (4.0 m) at its base and 12 ft high (3.7 m). Water was released for a sawmill and irrigation at the Mission San Diego de Alcalá, 5 miles (8.0 km) away. It is now part of Mission Trails Regional Park, the largest municipal park in California. Old Mission Dam is also a nationally registered historic landmark.