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• 1. [Article] The impact of small-scale dams on fishes of the Willamette River, Oregon and an evaluation of fish habitat models

  The research on which this report is based was financed in part by the United States Department of the Interior as authorized by the Water Research and Development Act of 1978 (P.L. 95-467).

  Citation × Citation Citation Abstract Copy Title: The impact of small-scale dams on fishes of the Willamette River, Oregon and an evaluation of fish habitat models Author: Oregon State University. Dept. of Fisheries and Wildlife, Oregon State University. Water Resources Research Institute, Oregon Cooperative Fishery Research Unit, United States. Bureau of Reclamation, Li, Hiram W. The research on which this report is based was financed in part by the United States Department of the Interior as authorized by the Water Research and Development Act of 1978 (P.L. 95-467). Title: The impact of small-scale dams on fishes of the Willamette River, Oregon and an evaluation of fish habitat models Author: Oregon State University. Dept. of Fisheries and Wildlife, Oregon State University. Water Resources Research Institute, Oregon Cooperative Fishery Research Unit, United States. Bureau of Reclamation, Li, Hiram W. The research on which this report is based was financed in part by the United States Department of the Interior as authorized by the Water Research and Development Act of 1978 (P.L. 95-467). Close

• 2. [Article] Pacific lamprey research and restoration : 1997 annual report

  Based on oral interviews with tribal informants, current and former state and federal fisheries personnel, review of records and literature, and presence/absence sampling, it is apparent that Pacific lamprey ...

  Citation × Citation Citation Abstract Copy Title: Pacific lamprey research and restoration : 1997 annual report Author: Jackson, Aaron D., Close, David A., Oregon Cooperative Fishery Research Unit, Confederated Tribes of the Umatilla Indian Reservation in Oregon., Columbia River Inter-Tribal Fish Commission., Hatch, Douglas R., Li, Hiram W. Based on oral interviews with tribal informants, current and former state and federal fisheries personnel, review of records and literature, and presence/absence sampling, it is apparent that Pacific lamprey were once abundant in ceded area streams of the Umatilla Indian Reservation (John Day, Umatilla, Walla Walla, Tucannon, and Grande Ronde subbasins). Current population levels appear severely depressed in all subbasins except possibly the John Day, which could be classified as depressed. The most probable reasons for population declines include: dams, chemical treatment activities, declining habitat quality (e.g. high water temperatures, poor water quality, low instream flows), and angle-iron in fishways to prevent lamprey passage. Title: Pacific lamprey research and restoration : 1997 annual report Author: Jackson, Aaron D., Close, David A., Oregon Cooperative Fishery Research Unit, Confederated Tribes of the Umatilla Indian Reservation in Oregon., Columbia River Inter-Tribal Fish Commission., Hatch, Douglas R., Li, Hiram W. Based on oral interviews with tribal informants, current and former state and federal fisheries personnel, review of records and literature, and presence/absence sampling, it is apparent that Pacific lamprey were once abundant in ceded area streams of the Umatilla Indian Reservation (John Day, Umatilla, Walla Walla, Tucannon, and Grande Ronde subbasins). Current population levels appear severely depressed in all subbasins except possibly the John Day, which could be classified as depressed. The most probable reasons for population declines include: dams, chemical treatment activities, declining habitat quality (e.g. high water temperatures, poor water quality, low instream flows), and angle-iron in fishways to prevent lamprey passage. Close