Steelhead Adult Returns at Zosel Dam Data from Columbia R. DART and courtesy of U.S. Army Corps of Engineers, NWD, Chelan County PUD, and Douglas County PUD Graphics Menu Plot Symbols Graph Type: Passage Cumulative Passage Passage Bar Graph Current Year Histogram Adjust Graph Date Range: Start Date End Date (make dates at least a week apart) Determine Range Automatically Adjust Data Date Range: Start Date End Date (make dates at least a week apart) Data Set: All Years Current Year Last 5 Years Last 10 Years Priest Rapids Dam Rock Island Dam Rocky Reach Dam Tumwater Dam Wells Dam Zosel Dam Chinook Chinook Jacks Steelhead Wild Steelhead Sockeye Coho Coho Jacks Bull Trout Lamprey Shad None Outflow Generate Graph