Few vestiges of it remain today . Large sections were destroyed in a Great Flood of 1862 , and settlers used stones from the old aqueduct to build homes . The combined effects of floods , land cultivation , neglect and land development reduced most of the aqueduct to rubble . The only significant section that remains is located at the mouth of Canyada canyon on land that was formerly known as Rancho Cañada Larga o Verde owned by the Canet family from 1873 until at least the 1960s . This remaining section is 100 feet long and ten feet high , and is believed to have " served as a siphon , drawing water uphill through conduits . " The location is at 234 Canada Larga Road near the road 's interchange with the Ojai Freeway
Great Flood of 1862
Great Flood of 1862
San Buenaventura Mission Aqueduct