Keywords:anadromous fish, Central Valley Project (CVP), endangered species, fisheries, monitoring, native fish, Sacramento–San Joaquin Delta, State Water Project (SWP), water project operations
Record-low counts of Delta smelt at a time of persistent drought underscore the importance and challenges of managing freshwater flows for the benefit...
Record-low counts of Delta smelt at a time of persistent drought underscore the importance and challenges of managing freshwater flows for the benefit of fishes in the Sacramento-San Joaquin Delta while also meeting human demands for water. Understanding the effects of water flows on fishes is central to understanding how the Delta ecosystem functions and is key to achieving the state’s coequal goals of “providing a more reliable water supply for California and protecting, restoring and enhancing the Delta ecosystem … in a manner that protects and enhances … the values of Delta as an evolving place”. The economic, ecological, and social costs of scientific uncertainty in water management controversies are significant - and to some degree unavoidable.
Scientific findings that relate fishes and flows increasingly guide decisions on how to manage flows for the well-being of threatened or endangered species in the Delta. Many studies – and management decisions – rely on correlations between water flows and fish populations. But the decisions warrant fuller understanding of precisely how the flows affect the fishes. Knowledge of these underlying mechanisms is likely to facilitate adaptive management by clarifying uncertainty and risk, by creating specific expectations for outcomes and by strengthening testable hypotheses. This report therefore recommends, first and foremost (there are other recommendations as well), redoubling effects to identify causes and
effects concerning fishes and flows in the Delta.
The San Francisco Bay and Sacramento-San Joaquin Delta form one of the largest estuaries in the United States. The “Bay-Delta” system provides water...
The San Francisco Bay and Sacramento-San Joaquin Delta form one of the largest estuaries in the United States. The “Bay-Delta” system provides water to more than 25 million California residents and vast farmlands, as well as key habitat for birds, fish, and other wildlife. To help ensure the health of this crucial estuary, the U.S. Geological Survey, in close cooperation with partner agencies and organizations, is providing science essential to addressing societal issues associated with water quantity and quality, sediment transportation, environmental contamination, animal health and status, habitat restoration, hazards, ground subsidence, and climate change.
It is the policy of the California Water Impact Network to: • Oppose and work to defeat the construction of the Twin Tunnels...
It is the policy of the California Water Impact Network to:
• Oppose and work to defeat the construction of the Twin Tunnels Project which would divert water from the Sacramento River to the South Delta pumps before it gets to the Bay-Delta.
• Support and work to achieve the reduction in Delta exports to a maximum of 3 million acre-feet per year. Oppose any increased Delta exports to Central and Southern California.
• Support and work to achieve the elimination of paper water from State Water Project and Central Valley Project contracts.
• Support regional water self-sufficiency through conservation, recycling, storm water capture and other “soft path” means.
• Support upgrading Delta levees to withstand both sea level rise and the risk of a major earthquake.
• Support increased water supply reliability for State Water Project urban areas by reinstatement of the Urban Water Preference in State Water contracts and returning the Kern Water Bank to the public to store
the Urban Preference south of the Delta as a drought supply.
Cal-EPA was created to consolidate environmental programs and concentrate on vigorous enforcement of environmental regulations. The report discusses risk assessment activities, uniform permit...
Cal-EPA was created to consolidate environmental programs and concentrate on vigorous enforcement of environmental regulations. The report discusses risk assessment activities, uniform permit processes, public involvement, and the advantages and consequences of bringing all environmental entities into Cal-EPA. In addition, the Commission addresses the short- and long-term costs and savings. The Cal-EPA report has seven findings and seven recommendations.