2015 Technical Memorandum Regarding the Accounting of San Joaquin River Spring-run Chinook Salmon at the Central Valley Project and State Water Project Sacramento-San Joaquin Delta Fish Collection Facilities
Keywords:anadromous fish, Central Valley Project (CVP), ecosystem management, endangered species, fisheries, native fish, Sacramento–San Joaquin Delta, State Water Project (SWP), water project operations
Reducing Methylmercury Accumulation in the Food Webs of San Francisco Bay and Its Local Watersheds$0.00 Add to Downloads
Reducing Methylmercury Accumulation in the Food Webs of San Francisco Bay and Its Local WatershedsSan Francisco Estuary Institute | April 8, 2014...Summary
San Francisco Bay (California, USA) and its local watersheds present an interesting case study in estuarine mercury (Hg) contamination. This review focuses on...
San Francisco Bay (California, USA) and its local watersheds present an interesting case study in estuarine mercury (Hg) contamination. This review focuses on the most promising avenues for attempting to reduce methylmercury (MeHg) contamination in Bay Area aquatic food webs and identifying the scientific information that is most urgently needed to support these efforts.
Flows and Fishes in the Sacramento-San Joaquin Delta$0.00 Add to Downloads
Flows and Fishes in the Sacramento-San Joaquin DeltaDelta Independent Science Board | August 1, 2015...Summary
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.
Financing Delta Improvements and Environmental Mitigation$0.00 Add to Downloads
Financing Delta Improvements and Environmental MitigationCalifornia Research Bureau | September 1, 2008...Summary
Resolution of the Delta’s water supply, water quality, and fish problems may involve building various structures, possibly including gates, pumps, canals, levees, and...
Resolution of the Delta’s water supply, water quality, and fish problems may involve building various structures, possibly including gates, pumps, canals, levees, and dams, and undertaking landscaping rearrangements to improve habitat for several species of flora and fauna. Resolution also involves changing water flow regimes in ways that would make more or less water, but probably less, available for human uses. This work and these changes will cost serious money. Cost estimates for many of these actions have not yet been developed.
This paper explores approaches to financing these “improvements” and “mitigations.” While a little abstract, this is abstraction that matters. It will determine from whose pockets a good deal of money will come.
California has a long history of financing water projects. The first section of this paper reviews this history, in hopes of identifying water-financing principles that might be adapted to Delta improvements and mitigation. Some deep-seated controversies about how Delta improvements should be financed have roots in this history, and it may be helpful to point them out.
A core idea in California’s approach to financing water projects is that beneficiaries should pay for them. Decades ago, this was a straightforward proposition – people or water districts should pay for the necessary dams, canals, and pumps and the costs of operating them in proportion to the amount of water they received. In the current age of rising environmental sensitivity, it is a little muddier. An alternative formulation that applies, at least crudely, to housing developments and highway projects, is that project proponents should pay to mitigate at least some of the environmental harm that their project is likely to cause. The second section of this paper explores this controversial subject. It seems unlikely that any consensus can be reached about how to finance facilities in the Delta without reaching some agreement about how to deal with this matter.
This paper was first issued in July, 2008. This version contains a few clarifications made in response to the Blue Ribbon Task Force’s reviewers. The author is grateful for their suggestions.
Habitat Restoration in the Sacramento-San Joaquin Delta and Suisun Marsh: A Review of Science Programs$0.00 Add to Downloads
Habitat Restoration in the Sacramento-San Joaquin Delta and Suisun Marsh: A Review of Science ProgramsDelta Independent Science Board | April 25, 2013...Summary
Current plans call for the restoration of tens of thousands of acres of mainly intertidal habitat in the Sacramento-San Joaquin Delta and Suisun...
Current plans call for the restoration of tens of thousands of acres of mainly intertidal habitat in the Sacramento-San Joaquin Delta and Suisun Marsh. Restoration on this scale presents both formidable challenges and tremendous opportunities. As part of its legislatively mandated oversight of Delta science programs, the Delta Independent Science Board reviewed these habitat restoration efforts. We held discussions with individuals from state and federal agencies, NGOs, consulting firms, and universities. We were impressed by their dedication, enthusiasm, and knowledge, as well as by the scientific and institutional challenges they face.
Our findings and observations about the restoration efforts are grouped under a series of criteria for a successful restoration program. In such a program: the goals are clearly articulated; the design incorporates spatial and temporal context, adaptive management and flexibility, and monitoring; modeling is used in design and evaluation; planning and implementation are coordinated among projects; the necessary scientific expertise is available; and stakeholders are involved early and often.
Our findings and recommendations agree with those reached independently by National Research Council (NRC) panels. For convenience, as in the Delta Plan, we use "the Delta" to encompass both the statutory Delta and Suisun Marsh.