Distribution and Migration Behavior of Juvenile Hatchery Coho Salmon and Steelhead Trout in Eagle Creek and Clackamas River in North West Oregon

摘要

Eagle Creek National Fish Hatchery (NFH) spawns and raises juvenile coho salmon (Oncorhynchus kisutch) and juvenile steelhead trout (Oncorhynchus mykiss) that are released into Eagle Creek within the Clackamas River basin. The purpose of the program is to mitigate fish losses in the Columbia River Basin caused by federal dams, to provide commercial, sport, and tribal harvest, and to support tribal restoration programs upstream of Bonneville Dam. upring volitional releases occur March through May for coho and April mhrough May for steelhead (Eagle Creek Hatchery and Genetic Management Plan). Eagle Creek NFH currently operates as part of the Columbia River Fisheries Development Program and is funded through the Mitchell Act - a program administered by NOAA Fisheries (NMFS). This program is a part of the mitigation for habitat loss resulting from flooding, siltation, and fluctuating water levels caused by Bonneville Dam. The Columbia River Fish Management Plan under U.S. v Oregon is currently under renegotiation, however, current production goals are generally consistent with the production goals in the expired plan. In addition, Eagle Creek NFH production is consistent with court adopted management agreements for upper Columbia River fall Chinook, steelhead, and coho that specifically identifies production from Eagle Creek NFH for tribal restoration programs (Eagle Creek HGMP).