Monitoring and Evaluation of Mitchell Act-Funded National Fish Hatcheries in the Columbia River Gorge Complex 2023 Annual Report

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Monitoring and Evaluation of Mitchell Act-Funded National Fish Hatcheries in the Columbia River Gorge Complex 2023 Annual Report

The Mitchell Act was authorized by Congress in 1938 to provide funds for hatchery programs and fish passage fish passage
Fish passage is the ability of fish or other aquatic species to move freely throughout their life to find food, reproduce, and complete their natural migration cycles. Millions of barriers to fish passage across the country are fragmenting habitat and leading to species declines. The U.S. Fish and Wildlife Service's National Fish Passage Program is working to reconnect watersheds to benefit both wildlife and people.

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facilities to mitigate for declining salmon populations due to irrigation diversions, water pollution, logging, and hydropower development in the Columbia River Basin. Funds are distributed to treaty tribes, states, and federal agencies from the National Oceanic and Atmospheric Administration (NOAA) Fisheries. For National Fish Hatcheries (NFHs) in the Columbia River Gorge Complex, Mitchell Act funds are utilized by four facilities (Carson, Eagle Creek, Little White Salmon, and Willard NFHs) for rearing programs that produce Coho, fall Chinook, and spring Chinook salmon for commercial, tribal, and recreational harvest opportunities. Additionally, funds support egg and juvenile transfer programs, the collection of broodstock broodstock
The reproductively mature adults in a population that breed (or spawn) and produce more individuals (offspring or progeny).

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, maintenance of facilities, and monitoring and evaluation (M&E) of the programs by the Columbia River Fish and Wildlife Conservation Office. In this report, results from the M&E programs conducted at each of the four facilities over the past twelve years is discussed including broodstock need, juvenile production levels, size at release data, marking and tagging information, detection rates at Bonneville Dam, juvenile survival, adult returns and smolt-toadult survival rates inferred from coded-wire tag recoveries, adult age structures, and special studies which are supported by Mitchell Act funds. Recommendations for future studies are also discussed.

Brook Silver, Fish Biologist, wearing tan waders, black t-shirt and holding a salmonid. She is standing in a shallow creek.
Fish Biologist - Hatchery Assessment
Fish and Aquatic Conservation
Program R,
Access Databases ,
Backpack Electrofishing,
State Collection Permits, ESA 4(d) Authorization, and Section 10 Permits,
Science Communication/Illustration,
Fish and Wildlife Coordination Act on the Willamette River Basin Flood Control Project
Fish Biologist Jeremy Voeltz
Fish Biologist - Program Lead for Hatchery Assessment, GIS and Data, and Marking and Tagging
Fish and Aquatic Conservation
Additional Role(s)
Certified Civil Treatment Course Instructor
Publication date
Type of document
Annual Report
Coho Salmon eggs incubating and hatching at Quilcene NFH in WA State.
The Columbia River Fish and Wildlife Conservation Office collaborates with local, state and Tribal partners to conserve, restore, and improve native fish and aquatic resources throughout Oregon and along the Columbia River. We study wild and hatchery aquatic organisms and their populations, support...
Adult Chinook Salmon swimming in McAllister Springs in WA State
Welcome to Carson National Fish Hatchery! Constructed in 1938 by the Civilian Conservation Corp, we raise and release 1.52 million spring Chinook salmon each year to mitigate fishery losses due to hydroelectric dams on the Columbia River. Furthermore, we belong to a Complex of hatcheries along the...
Three adult Coho Salmon swimming in Silver Springs, WA State
Eagle Creek National Fish Hatchery raises approximately 850,000 coho salmon annually. The hatchery releases 350,000 coho on site, while 500,000 coho are transferred to the Yakama Nation to support coho restoration projects in their watersheds. The coho program operates as a segregated harvest...
Adult Chinook Salmon
Welcome to the Little White Salmon Fish Hatchery! Founded in 1898, it is the oldest Columbia River hatchery and a pioneer of salmon propagation. We raise and release roughly 5.5 million young spring and up-river bright fall Chinook salmon each year; in addition we collect eggs for other facilities...
Little White Salmon River
Willard National Fish Hatchery is among a network of hatcheries in the Columbia Basin that were constructed to ensure the continued survival of salmon and steelhead runs. This hatchery was opened in 1953 to compensate for the loss of upstream habitat due to hydroelectric projects. Willard is a...
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Public Domain
Juvenile Northern Pike in aquarium at Gavins Point National Fish Hatchery, South Dakota
The Fish and Aquatic Conservation program leads aquatic conservation efforts for the U.S. Fish and Wildlife Service. We are committed to tackling the nation’s highest priority aquatic conservation and recreational challenges to conserve, restore, and enhance fisheries for future generations.
FWS and DOI Region(s)