A visible section of the mission aqueduct still exists just east of Highway 33 on Cañada Larga Road as one of the few remaining parts of a seven-mile-long system that delivered water from San Antonio Creek to El Caballo filtration plant on the hill behind San Buenaventura Mission. Built of river cobblestones and Roman cement by Chumash workers under the direction of mission priests, the Cañada Larga section has suffered erosion damage over the years, and efforts are currently underway to protect it from further damage. The aqueduct is on private land but can be observed from Cañada Larga Road.
