Adult fish passage

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A little about the video
The most common way for adult fish to get past a dam is to use a fish ladder, a water-filled structure that allows fish to pass up and over in a series of steps. Migrating salmon are attracted to current at the base of an extended concrete stairway. The fish swim or jump from step to step. Depending on the height of the dam, the fish ladder may have many switchbacks with turning pools. At dams and places where it is not practical to install a fish ladder, a trap and haul operation can be used to move adult fish upstream. Migrating salmon are attracted to flow at the base of a fish ladder.
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2019 ADULT SALMON COUNTS

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Daily Adult Dam Counts

Find what you want fast: The Fish Passage Center provides technical assistance and information to fish and wildlife agencies and tribes, in particular, and the public in general, on matters related to juvenile and adult salmon and steelhead passage through the mainstem hydrosystem in the Columbia River Basin. Adult ladder water temperatures are graphed hourly from April 1st through October 31st. The data are available for the years: , and Daily Adult Salmon Dam Counts Fishermen's Update - table with the daily adult salmon counts updated throughout the day. Adult Salmon Dam Count Graph Graph comparting the current year, last year and 10 year average daily counts. Daily Smolt and River Reports Daily smolt and river reports updated daily by 10am.
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DART Adult Passage Daily Counts for All Species

Data Courtesy of U. Chinook Run Schedules. Fish counting by video tape takes at least a few days to process: the fish counters have to make, collect, and read the tapes, and then submit their fish counts. DART retrieves and posts the data as soon as it is made available.
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Thermal layering in reservoirs upstream from hydroelectric dams can create temperature gradients in fishways used by upstream migrating adults. In the Snake River, Washington, federally-protected adult salmonids Oncorhynchus spp. Some spring Chinook salmon O.
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