What is it and why does it matter?

Explore data and historical trends of river, dam and reservoir conditions.

— the latest count shows 591,134 sockeye have passed bonneville dam through july 11 with daily counts only recently declining below 10,000 fish per day.

The total count is greater than.

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While the total number of steelhead that came through bonneville dam fish counter in 2022 was 117,487 up from the 68,647 in 2021, but the five year average is still.

Click on a species followed by the symbol to view the dart adult passage data inventory for the species at bonneville for all.

— a record number of chinook salmon passed bonneville dam during their fall migration up the columbia river this year, according to the u. s.

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The tail end of the 2024 columbia sockeye run whacked away the old record count of the salmon at bonneville dam.

The data collected from the fish count is essential for understanding the health of the fish populations.

— bonneville dam passage through september 2 totals 131,093 adult and17,046 jack fall chinook.

Portland district publishes the fish counts taken at the dams in annual fish passage reports, as daily, monthly, and yearly count totals of fish migrating upstream through the.

Examining the impact of the.

Presents current columbia basin chinook, steelhead, sockeye and coho adult passage counts with the ten year averages at bonneville, mcnary, ice harbor, lower granite, priest rapids,.

— introduction to bonneville dam fish count:

Understanding how the bonneville dam fish count works;

Army corps of engineers.

This is the fourth largest cumulative adult count to date in the last 10 years.

— a total of 23,401 fall chinook have been counted at bonneville dam through tuesday with daily counts from 966 fish on saturday to 4,455 on monday, but trending.

— new record bonneville sockeye count set sunday.

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— they count adult salmon, steelhead, shad, lamprey, and other species.

View the daily 2024 bonneville adult passage counts.