Fish Ladders. William S. Rainey,
Senior Fish Passage Engineer, Northwest Region, National Marine Fisheries
Service, Portland, Ore.
California's Living Marine Resources and Their Utilization.
William S. Leet, Christopher M. Dewees, Charles W. Haugen (eds.). 1992.
Sea Grant Extension Publication UCSGEP-92-12. Pg. 33-36, 60-70, 83-86.