P12-201-4441 NA Klamath Project, OR-CA. Center Canal Flume--View of outlet transition south wall after corntractor forces stopped source of water flow. Visquene was laid next to the outlet transition cutoff wall and backfilled. The leak was caused by high water running around the edge of the cutoff wall into the void where compacted backfill shrank away from the flume wall. The water, as it piped, cut deeper into the backfill; August 19, 1977; USBR photo by D.J. Kline