This project provided staff and equipment to interview anglers and sample catches on the mainstem Columbia River below Bonneville Dam during the mark-selective fisheries for summer and fall Chinook. This project assisted region-wide efforts to meet the minimum sample rate target. Sampling activity in 2015 occurred from mid-June through July and early to mid-September.
Information collected was used to estimate: (1) angler trips, (2) the mark rate in the fisheries (marked and unmarked encounters), (3) the number of fish released and the number of mortalities, and (4) stock composition of marked and unmarked mortalities using CWTs and/or genetic data.
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