Fish passing Winchester Dam view-window counting station on the North Umpqua River were enumerated. Figure 1 is a map of the Umpqua basin and denotes the counting station. The counts for summer steelhead, fall chinook, and sea-run cutthroat increased while those for winter steelhead, spring chinook, and coho decreased. By far the greater number of fish again passed through the station from Noon to 8 p.m. The contribution of the hatchery and rearing pond programs to the anadromous fishery was demonstrated by the numbers of marked fish returning (1008 and 6700 percent of each run). Substantially higher returns from March releases over fish stocked in either April or May is indicated. (From the abstract)
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