Old Mission Dam

The Old Mission Dam, located in San Diego, California was the first major irrigation project on the Pacific coast of the United States. Located along the San Diego River, the stone and cement dam is 220ft, 13ft at its base and 12ft. Water was released for a sawmill and irrigation at the Mission San Diego de Alcalá, 5mi away.It is now part of Mission Trails Regional Park, the largest municipal park in California. Old Mission Dam is also a registered state historic landmark.