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Division: Sport Fish
Title: Copper River Delta trout assessment, 2000.
Author: Miller, M. G.
Year: 2002
Report ID: Alaska Department of Fish and Game, Fishery Data Series No. 02-22, Anchorage.
Abstract: Adult cutthroat Oncorhynchus clarki and rainbow O. mykiss trout were captured in waters in the Special Trout Management Area recently established on the Copper River Delta using hook and line and minnow traps. Captured cutthroat trout and rainbow trout were measured (FL), had scales taken for age determination, and were examined for signs of sexual maturity. Cutthroat trout 250 mm FL were marked with uniquely numbered Floy tags. We captured 13 cutthroat trout and 24 rainbow trout during five sampling trips (two multi-day trips for a total of 8sampling days). Because a sample of 120 fish of each species was needed to estimate length and age composition in each of seven defined drainages, data analysis was not attempted for the 2000 season. However, this was an informative first year of the study: sampling trips revealed the large scope of the project and the resources required to achieve the objectives; and sampling methods were evaluated and provided direction for future efforts. Finally, historical data collected by various agencies were compiled into a single database.
Keywords: cutthroat trout, Oncorhynchus clarki, rainbow and steelhead trout, Oncorhynchus mykiss, Carbon Mountain, sagittal otoliths, anadromous, Sheep Creek, Johnson Creek, Martin Lake, Martin River, Martin Glacier River, Lake Tokun.