Cle Elum Dam Interim Fish Passage Operations 2009 Annual Report: Stroage Dams Fish Passage Study, Yakima Project, Washington. Technical Series No. PN-YDFP-015

摘要

The Bureau of Reclamation is participating in a cooperative investigation with the Yakama Nation (YN), State and Federal agencies, and others, to study the feasibility of providing fish passage at the five large storage dams of the Yakima Project. These dams--Bumping, Kachess, Keechelus, Cle Elum, and Tietonwere never equipped with fish passage facilities. Four of the five reservoirs were originally natural lakes (Rimrock Lake above Tieton Dam is the exception) and historically supported Native American fisheries for sockeye salmon (Oncorhynchus nerka) and other anadromous and resident fish. Constructing fish passage facilities at the dams would create the potential for: the reintroduction of sockeye salmon to the watershed; increasing populations of upper Yakima basin steelhead (O. mykiss), coho salmon (O. kisutch), and chinook salmon (O. tshawytscha); restoring the life history and genetic diversity of salmon and other fishes such as lamprey and bull trout. Fish passage at the storage dams is being considered for recovery of species listed under the Endangered Species Act (ESA).