Anadromous fish are freshwater fish that migrate to sea then return to spawn in freshwater. In California, anadromous fish include coho salmon, Chinook salmon and steelhead. Those in the Central Valley have experienced significant declines from historical populations.
Of particular importance is the Chinook salmon as the species supports commercial fishing and related jobs and economic activities at fish hatcheries.
The decline in salmon numbers is attributed to a variety of manmade and natural factors including drought, habitat destruction, migratory obstacles created by water projects, unfavorable ocean conditions, pollution and introduced predator species.
The Anadromous Fish Restoration Program (AFRP), a part of the Central Valley Project Improvement Act, aims to double the natural production of fish that migrate between fresh water and salt water. The goal is to boost the numbers of anadromous fish to at least twice the levels attained during the period of 1967-1991.
Since 1995, AFRP has implemented more than 195 projects through funding by Congressional appropriations and a surcharge imposed on Central Valley Project water and power contractors.
Unlike most other microorganisms, zooplankton are technically heterotrophic animals – meaning they cannot produce their own food. Instead, they feed upon phytoplankton like algae, a process responsible for keeping these populations under control.
Less than 50 miles northeast of Chico, California, begins the 93-mile Butte Creek – a tributary of the Sacramento River. It is named after Butte County, which was in turn named for the nearby volcanic plateaus, or “buttes,” and travels through a massive canyon on its way southwest to the Sacramento Valley.
As a watershed, it drains about 800 square miles, both for agricultural and residential use. The upper watershed is dominated by forests, while the lower watershed is primarily agricultural.
About 100 people, from stakeholders and supporters to dignitaries and politicians, came out to the former site of the San Clemente Dam on Monday to celebrate the removal of the dam and Carmel River Reroute Project.
Participants of this tour snaked along the San Joaquin River to learn firsthand about one of the nation’s largest and most expensive river restoration plans.
The San Joaquin River was the focus of one of the most contentious legal battles in California water history, ending in a 2006 settlement between the federal government, Friant Water Users Authority and a coalition of environmental groups.
If the California drought continues, many of California’s native freshwater fishes are at imminent risk of extinction. This is a key finding of our recent report What If California’s Drought Continues?, which projects the potential consequences of ongoing drought on key sectors, including the environment.
A potentially far-reaching ruling released Tuesday by a Sacramento-based appellate court rejects two challenges – but not a third one – to a landmark environmental-impact review of California’s network of fish hatcheries and the practice of stocking the state’s waterways with fish.
The Water Education Foundation’s popular Northern California Tour features a diverse group of experts talking about groundwater, flood management, the drought, water supplies, agricultural challenges, and the latest on salmon restoration efforts. The tour also includes a houseboat cruise on Lake Shasta. … The tour travels the length of the Sacramento Valley with visits to Oroville and Shasta dams.
This 24-page booklet details the conflict between environmentalists, fish organizations and the Yuba County Water Agency and how it was resolved through the Lower Yuba River Accord – a unique agreement supported by 18 agencies and non-governmental organizations. The publication details the history and hydrology of the Yuba River, past and present environmental concerns, and conflicts over dam operations and protecting endangered fish is included.
This beautiful 24×36 inch poster, suitable for framing, features a map of the San Joaquin River. The map text focuses on the San Joaquin River Restoration Program, which aims to restore flows and populations of Chinook salmon to the river below Friant Dam to its confluence with the Merced River. The text discusses the history of the program, its goals and ongoing challenges with implementation.
This beautiful 24×36 inch poster, suitable for framing, displays the rivers, lakes and reservoirs, irrigated farmland, urban areas and Indian reservations within the Klamath River Watershed. The map text explains the many issues facing this vast, 15,000-square-mile watershed, including fish restoration; agricultural water use; and wetlands. Also included are descriptions of the separate, but linked, Klamath Basin Restoration Agreement and the Klamath Hydroelectric Agreement, and the next steps associated with those agreements. Development of the map was funded by a grant from the U.S. Fish and Wildlife Service.
This beautifully illustrated 24×36 inch poster, suitable for framing and display in any office or classroom, focuses on the theme of Delta sustainability.
The text, photos and graphics explain issues related to land subsidence, levees and flooding, urbanization and fish and wildlife protection. An inset map illustrates the tidal action that increases the salinity of the Delta’s waterways. Development of the map was funded by a grant from the California Bay-Delta Authority.
This 24×36 inch poster, suitable for framing, explains how non-native invasive animals can alter the natural ecosystem, leading to the demise of native animals “Unwelcome Visitors” features photos and information on four such species – including the zerbra mussel – and explains the environmental and economic threats posed by these species.
This 24×36 inch poster, suitable for framing, explains how non-native invasive plants can alter the natural ecosystem, leading to the demise of native plants and animals. “Space Invaders” features photos and information on six non-native plants that have caused widespread problems in the Bay-Delta Estuary and elsewhere.
The 24-page Layperson’s Guide to California Water provides an excellent overview of the history of water development and use in California. It includes sections on flood management; the state, federal and Colorado River delivery systems; Delta issues; water rights; environmental issues; water quality; and options for stretching the water supply such as water marketing and conjunctive use.
The 24-page Layperson’s Guide to the Central Valley Project explores the history and development of the federal Central Valley Project (CVP), California’s largest surface water delivery system. In addition to the history of the project, the guide describes the various CVP facilities, CVP operations, the benefits the CVP brought to the state, and the CVP Improvement Act (CVPIA).
The 24-page Layperson’s Guide to the Delta explores the competing uses and demands on California’s Sacramento-San Joaquin Delta. Included in the guide are sections on the history of the Delta, its role in the state’s water system, and its many complex and competing issues with sections on water quality, levees, salinity and agricultural drainage, and water distribution.
At present, barriers make it difficult for anadromous fish, including Chinook salmon and Central Valley steelhead trout, to migrate. These barriers include natural waterfalls and hydroelectric diversion dams.
This printed issue of Western Water features a roundtable discussion with Anthony Saracino, a water resources consultant; Martha Davis, executive manager of policy development with the Inland Empire Utilities Agency and senior policy advisor to the Delta Stewardship Council; Stuart Leavenworth, editorial page editor of The Sacramento Bee and Ellen Hanak, co-director of research and senior fellow at the Public Policy Institute of California.
This printed issue of Western Water examines the issues associated with the State Water Board’s proposed revision of the water quality Bay-Delta Plan, most notably the question of whether additional flows are needed for the system, and how they might be provided.
This printed issue of Western Water examines science – the answers it can provide to help guide management decisions in the Delta and the inherent uncertainty it holds that can make moving forward such a tenuous task.
California’s native salmon and trout are in trouble. Driven down by more than a century of adverse impacts caused by development coupled with a changing climate, salmon and trout populations have dwindled to a fraction of their historic numbers. The crash is evident in many areas, none more so than the collapse of the West Coast salmon fishery in 2008. With the fish plummeting to record low numbers, federal officials for the first time closed all commercial and sport fishing off the coast of California and most of Oregon.
This printed copy of Western Water examines the native salmon and trout dilemma – the extent of the crisis, its potential impact on water deliveries and the lengths to which combined efforts can help restore threatened and endangered species.
This issue of Western Water explores the implications for the San Joaquin River following the decision in the Natural Resources Defense Council lawsuit against the Bureau of Reclamation and Friant Water Users Authority that Friant Dam is required to comply with a state law that requires enough water be released to sustain downstream fish populations.