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DWR Publications

Every year, the Department of Water Resources issues technical bulletins, reports, and other publications and media documenting the measurement, protection, use, and management of California's water resources. This DWR Publications Repository is a partial and growing list of the publications and other media produced and distributed by the Department.

In this list you find a variety of types of publications and other media ranging from print material, to audio and video files. If the publication or other media is available in electronic format, a link will point to the appropriate electronic file. In many cases, publications are only available in hardcopy and cannot be downloaded. A contact phone number and email will be provided for cases where an electronic download is not available.

Please use the Comments or Suggestions link in the footer to request an accessible version of text-based documents.

If you are searching for a particular publication or media item, and cannot find it, for more information, please contact:
State of California
Department of Water Resources
Bulletins and Reports
P.O. Box 942836, Sacramento, CA 94236-0001
or
1416 Ninth Street, Third Floor
Sacramento, CA 95814
(916) 653-1097

In addition to this Publications Repository, the Department of Water Resources publications, including those that are now out-of-print, are distributed to many California libraries and to libraries in other states and the District of Columbia. WorldCat.org is a useful web site to search library collections in your community and thousands more around the world.

http://www.worldcat.org/ (Link will open in a new browser window.)
(Sort Alphabetically or by Most Recent Publish Date)

Toggle Image 2001 Electrical Conductivity in Shallow Groundwater Map 2004 (PDF, 2.13 MB)
Description: Aerial distribution map displays 2001 electrical conductivity within 20 feet, at enterval depths of 5 feet, throughout the San Joaquin Valley.
Toggle Image 2009 Shallow Groundwater Map, San Joaquin Valley 08/01/2010 (PDF, 4.82 MB)
Description: Aerial distribution map displays 2009 shallow groundwater within 20 feet, at interval depths of 5 feet, throughout the San Joaquin Valley.
Toggle Image Antelope Groundwater Study 04/01/1987 (PDF, 4.60 MB)
Description: Tehama County officials have long been concerned about the quality of the groundwater in the Antelope area just east of Red Bluff. Over the years, analysis of water samples has shown bacterial counts, and in some cases nitrate concentrations, to be unacceptably high. The County needed a more complete knowledge of the area's groundwater resources and their quality to evaluate any groundwater pollution threat to public health.
Toggle Image Antelope Lake Bathymetric Survey 1998 1998 (PDF, 1.56 MB)
Description: Anderson, Curtis. Antelope Lake Bathymetric Survey. Memorandum to Dave Bogener, dated July 15, 1998. 65 pp.
Toggle Image Antelope Reservoir Sedimentation Survey 1990 05/15/1990 (PDF, 8.19 MB)
Description: Gentry, Wayne S. 1990. Antelope Reservoir Sedimentation Survey. Memorandum to Clayton Magonigal, Chief, Water Operations Branch, division of Operations and Maintenance. 34 pp. + 9 pp of appendices/attachments.
Toggle Image Assessing Water Quality for Livestock Under Drought Conditions (Drought Tip 92-30) 1993 (PDF, 390 KB)
Description: Unless livestock have access to an adequate supply of safe water every day, they may reduce feed intake, thereby lowering production and causing an economic loss to the livestock owner.
Toggle Image Bulletin 250: Fish Passage Improvement Report 2005
Description: Bulletin 250 is a joint interagency document prepared through CALFED's Ecosystem Restoration Program, which identifies potential fish passage impediments and ongoing activities that address fish passage barriers within and outside of the Fish Passage Improvement Program geographic scope.
Toggle Image CEQA Compliance -- En Español: Aviso de preparation 03/01/2005 (PDF, NA)
Description: Aviso de preparation del informe programático de impactos ambientales de el proyecto de restaurar el ecosistema del mar Salton y conservar su fauna acuática y silvestre.
Toggle Image CEQA Compliance -- En Español: Resumen de las reuniones para definir los alcances del proyecto 05/01/2004 (PDF, NA)
Description: Resumen de las reuniones para definir los alcances del proyecto del aviso de preparación.
Toggle Image CEQA Compliance -- Erratum Notice to the NOP 03/15/2005 (PDF, 54 KB)
Description: Erratum Notice to the Notice of Preparation
Toggle Image CEQA Compliance -- Notice of Preparation 03/01/2005 (PDF, 248 KB)
Description: Programmatic Environmental Impact Report for the Restoration of the Salton Sea Ecosystem and Preservation of its Fish and Wildlife Resources.
Toggle Image CEQA Compliance -- Responses to the Notice of Preparation 04/01/2004 (PDF, 35.42 MB)
Description: Responses to the Notice of Preparation.
Toggle Image CEQA Compliance -- Summary of Scoping Meeting Comments 06/01/2004 (PDF, 70 KB)
Description: Summary of Scoping Meeting Comments and Responses to the Notice of Preparation.
Toggle Image Calaveras River Fish Migration Barriers Assessment Report 2007
Description: This publication provides an inventory and evaluation of potential barriers downstream of New Hogan Dam on the Calaveras River, the Mormon Slough flood control channel, and the Stockton Diverting Canal. In addition, the report includes possible solutions to aid fish passage at the different types of barriers found in the system.
Toggle Image California Department of Water Resources 05/01/2012 (PDF, 975 KB)
Description: The California Department of Water Resources (DWR), established in 1956 by the California Legislature, plays an important role in sustaining California’s economy, environment and quality of life. DWR operates and maintains the California State Water Project (SWP), which provides drinking water and water to our farms. Other programs work to preserve the natural environment and wildlife, monitor dam safety, manage floodwaters, conserve water use, and provide technical assistance and funding for projects for local water needs. These are among many activities as DWR strives to meet the water needs of today and the future.
Toggle Image California Drought: An Update 2008 04/01/2008 (PDF, 28.50 MB)
Description: The purpose of this report is to update an earlier Department report on drought published on 2000, with special emphasis on advances in drought-related research. To this end, the report features contributed articles from climate scientists whose research covers a wide range of drought and climate change or variability topics. The report also provides updates on hydrologic conditions and selected resource management subjects since publication of the Departments 2000 report.
Toggle Image Central Coast Crop Coefficients for Field and Vegetable Crops (Drought Tip 92-45) 1992 (PDF, 399 KB)
Description: A publication describing central coast crop coefficients for field and vegetable crops
Toggle Image Central Valley Flood Management Planning Program Scoping Document - DRAFT 10/05/2009 (PDF_INACTIVE_12-29-11, NA)
Description: The Central Valley Flood Management Planning (CVFMP) Program is one of several programs being managed within FloodSAFE California (FloodSAFE). The CVFMP Program addresses most of the flood-related planning activities that were authorized by the California Legislature during the 2007/2008 session within much of the Central Valley. This version updates the maps contained in the June 2009 draft.
Toggle Image Citrus Irrigation Scheduling During a Drought (Drought Tip 92-34) 1992 (PDF, 583 KB)
Description: A publication describing citrus irrigation scheduling during a drought.
Toggle Image Climate Change Impacts Summary Sheet: June 2009 06/12/2009 (PDF, 359 KB)
Description: Describes the key findings of the report "Using Future Climate Projections to Support Water Resources Decision Making in California." These findings include sea level rise projects, the affects of increasing air temperature on snowmelt, and water supply reliability.
Toggle Image Comprehensive Needs Assessment For Chinook Salmon Habitat Improvement Projects In The San Joaquin River Basin 1994
Description: This 93 page report was written by the Department of Water Resources, San Joaquin District for the Department of Fish and Game. It identifies types and locations of projects that can be constructed to improve salmon habitat on the Stanislaus, Tuolumne, and Merced Rivers.
Main Body (PDF, NA)
Appendix A (PDF, NA)
Appendix B (PDF, NA)
Appendix C (PDF, NA)
Appendix D (PDF, NA)
Appendix E (PDF, NA)
Appendix F (PDF, NA)
Toggle Image DWR News People Fall 2005 09/01/2005 (PDF, 4.76 MB)
Description: DWR NEWS/People magazine was created with the Winter 2004 edition, and is a combination of DWR NEWS magazine and DWR People newsletter. This quarterly magazine contains information about DWR activities and employees.
Toggle Image DWR News People Fall 2006 09/01/2006 (PDF, 25.48 MB)
Description: DWR NEWS/People magazine was created with the Winter 2004 edition, and is a combination of DWR NEWS magazine and DWR People newsletter. This quarterly magazine contains information about DWR activities and employees.
Toggle Image DWR News People Spring/Summer 2009: Solving the San Joaquin Valley's Agricultural Drainage Problems 06/10/2009 (PDF, 4.33 MB)
Description: The DWR NEWS/People issue features DWR's San Joaquin Valley Drainage Program and its focus on achieving effective drainage water management through monitoring & evaluation, treatment of drainage water & its salts, Integrated On-Farm Drainage Management, real-time water quality monitoring, drainage reduction, and environmental services activities.
Toggle Image DWR News People Summer 2007 06/01/2007 (PDF, 5.34 MB)
Description: DWR NEWS/People magazine was created with the Winter 2004 edition, and is a combination of DWR NEWS magazine and DWR People newsletter. This quarterly magazine contains information about DWR activities and employees.
Toggle Image DWR News People Winter 2003-2004 2004 (PDF, 1.30 MB)
Description: DWR NEWS/People magazine was created with the Winter 2004 edition, and is a combination of DWR NEWS magazine and DWR People newsletter. This quarterly magazine contains information about DWR activities and employees.
Toggle Image DWR News People Winter 2008 01/03/2008 (PDF, 3.62 MB)
Description: DWR NEWS/People magazine was created with the Winter 2004 edition, and is a combination of DWR NEWS magazine and DWR People newsletter. This quarterly magazine contains information about DWR activities and employees.
Toggle Image DWR News People Winter 2008-2009 01/05/2009 (PDF, 3.93 MB)
Description: DWR NEWS/People magazine was created with the Winter 2004 edition, and is a combination of DWR NEWS magazine and DWR People newsletter. This quarterly magazine contains information about DWR activities and employees.
Toggle Image DWR Publications (Bulletin 170-98) 2000 (PDF, 2.85 MB)
Description: Bulletin 170 is an annual online guide to the Department of Water Resources’ publications. Every year, the Department issues technical bulletins, reports, and other publications documenting the measurement, protection, use, and management of California’s water resources. Bulletin 170-98 includes summaries of all bulletins, district/division reports, newsletters, and brochures issued during 1998.
Toggle Image DWR-Hamilton Ranch Management Plan 11/01/1994 (PDF, 8.22 MB)
Description: The Department of Water Resources purchased approximately 90 acres of land in 1985 near the mouth of Grass Valley Creek in Trinity County. The land is used to operate several dredged sediment control pools in Grass Valley Creek, and to store decomposed granite sediment. The project is a part of the Trinity River Task Force fish and wildlife restoration efforts associated with the effects of construction of Trinity and Lewiston dams.
Toggle Image Daguerre Point Dam Fish Passage Improvement Project - 2002 Water Resources Studies 2003 (PDF, 4.29 MB)
Description: The purpose of this report is to summarize and analyze the available hydrologic (including groundwater and flooding), hydraulic, and sediment data for the lower Yuba River. In addition, this report will investigate the present conditions on the river to provide a foundation for the subsequent environmental document that will be prepared for the Fish Passage Improvement Program.
Toggle Image Daguerre Point Dam Fish Passage Improvement Project - Analysis of Potential Benefits to Salmon and Steelhead from Improved Fish Passage at Daguerre Point Dam 2003 (PDF, NA)
Description: The purpose of this report is to examine available data on habitat conditions, flow, passage and spawning above and below Daguerre Point Dam to address these aforementioned hypotheses. Based on this review, the report then analyzes the potential benefits or impacts of improved passage at the dam. These benefits/impacts depend on factors directly related to passage and to the indirect effects of various alternatives on both passage and habitat conditions in the Lower Yuba River.
Toggle Image Deciding How Much to Plant During a Drought (Drought Tip 92-43) 1992 (PDF, 38 KB)
Description: The most effective response to a severe drought is to reduce planted acreage. The method described here assumes that sufficient water will be applied to avoid yield-reducing water stress.
Toggle Image Developing a Restoration Plan: An Objective and Transparent Process 08/01/2005 (PDF, 486 KB)
Description: Two years ago, the state legislature directed the State of California to “undertake the restoration of the Salton Sea ecosystem and the permanent protection of the wildlife dependent on that ecosystem.” The legislature also directed the Secretary for Resources to prepare a restoration study and accompanying programmatic Environmental Impact Report (EIR). The state Resources Agency is following an objective and transparent process that includes broad public involvement for preparation of the Ecosystem Restoration Plan and programmatic EIR called for in the legislation. This process is intended to provide balanced representation of the numerous stakeholders with interest in restoration of the Salton Sea.
Toggle Image Draft Supplement to the EIS Prototype Project to Augment Snow Pack by Cloud Seeding 1991 (PDF, 5.70 MB)
Description: The objective of this report is to address the issues not answered by the Regional Forester regarding cloud seeding in the Upper Feather River Basin using ground-based remotely operated liquid propane dispensers.
Toggle Image Drought-Related Toxicoses in Cattle (Drought Tip 92-08) 1993 (PDF, 40 KB)
Description: Past droughts in California have contributed to a number of poisoning cases in cattle. This publication discusses cases of toxicoses observed during a California Drought.
Toggle Image East Park Reservoir Limnology and Water Quality Study Memorandum Report 06/01/1971 (PDF, 3.53 MB)
Description: Colusa County joined with the Department in a study of the East Park Reservoir drainage basin to determine the effect that proposed urban development would have on the basin. Studies included geology, soils, hydrology, and current uses of the watershed.
Toggle Image Eastern Shasta County Groundwater Study 06/01/1984 (PDF, 8.79 MB)
Description: This report presents the ground water hydrology and geology of selected areas and recommends conservation and management meastures that local agencies can use to stretch their water supplies. It also suggests development densities that would be appropriate for each area, based on teh area's estimaged ground water resources.
Toggle Image En Español: Historia sobre el Mar Salton 2005 (PDF, NA)
Description: Historia sobre el Mar Salton
Toggle Image En Español: Plan Para Restaurar El Ecosistema Del Mar Salton - Datos Básicos 02/25/2005 (PDF, NA)
Description: El Río Colorado es la fuente de mucho del suministro de agua del Sur de California. El agua del Río ha sido adjudicada a los estados del oeste de los Estados Unidos por un sistema de reglamentos, decisiones jurídicas, y acuerdos que datan a la década de 1920. Anteriormente, los estados de Arizona y Nevada no estaban usando el total de sus porciones de agua adjudicadas, y como consecuencia California estaba autorizada a usar el agua que sobraba de estos estados. Sin embargo, el desarrollo en Arizona y Nevada ha causado que California reduzca su consumo de agua del Río Colorado a su porción básica.
Toggle Image En Español: Resumén Legislativo 04/08/2005 (PDF, NA)
Description: En el año 2003, el Estado de California adoptó el Acuerdo sobre la Cuantificación de la Adjudicación del Agua del Río Colorado (QSA, por sus siglas en inglés) y estableció la política estatal para restaurar el Mar Salton. La legislación requiere que el Estado de California desenvuelva varias acciones para restaurar el Mar Salton y coordine varios de los aspectos del QSA.
Toggle Image En Español: Resumén de Programas Relacionados al Proyecto de Restauración del Ecosistema 05/03/2005 (PDF, NA)
Description: El Acuerdo sobre la Cuantificación de la Adjudicación del Agua del Río Colorado (QSA, por sus siglas en inglés), y los otros acuerdos relacionados al QSA, son acuerdos entre el Distrito de Agua del Valle de Coachella (CVWD, por sus siglas en inglés), el Distrito de Riego de Imperial (IID, por sus siglas en inglés), Distrito Metropolitano de Agua del Sur de California, la Autoridad de Agua del Condado de San Diego (SDCWA, por sus siglas en inglés), el Departamento del Interior de los Estados Unidos, el Departamento de Pesca y Caza (DFG, por sus siglas en inglés), y el Departamento de Recursos de Agua (DWR, por sus siglas en inglés).
Toggle Image Field Use of Tensiometers (Drought Tip 92-38) 1992 (PDF, 372 KB)
Description: Two page brochure describing the field use of tensiometers. A tensiometer is a device for measuring soil water tension. It consists of a cylindrical pipe about one inch in diameter with a porous ceramic cup attached to one end and a vacuum gauge attached to the other.
Toggle Image Final EIR for the Simulation of Natural Flows in the Middle Piru Creek 2005 (PDF, 9.60 MB)
Description: Final EIR for the Simulation of Natural Flows in the Middle Piru Creek, prepared by Aspen Environmental Group for the Department of Water Resources.
Toggle Image Final Supplement to the EIS for the Prototype project to Augment Snow Pack by Cloud Seeding 10/01/1991 (PDF, 13.43 MB)
Description: The final supplement to the EIS incorporates comments and responses to comments on a proposed cloud seeding project to be located in Plumas and Sierra Counties.
Toggle Image Fish Passage Improvement Report (Bulletin 250) 2005
Description: Bulletin 250 is a joint interagency document prepared through CALFED's Ecosystem Restoration Program, which identifies potential fish passage impediments and ongoing activities that address fish passage barriers within and outside of the Fish Passage Improvement Program geographic scope.
Toggle Image Ground Water (Water Facts 6) 06/01/1993 (PDF, 106 KB)
Description: Eleven frequently talked-about groundwater topics are discussed in this Water Facts.
Toggle Image Ground Water Management in California - Six Methods Under Current Law (Water Facts 8) 08/01/2000 (PDF, 60 KB)
Description: Water Facts are short reports on water resources issues of general interest. This Water Facts describes the six methods of managing groundwater used in California. The methods are listed in the chronological order in which they were developed.
Toggle Image Groundwater Quality Investigation at Spalding Tract Lassen County, California Draft Report 10/01/1990 (PDF, 7.93 MB)
Description: The State Water Resources Control Board contracted with DWR and the Department of Health Services to conduct an independent evaluation of the groundwater at Spalding Tract to determine potential contamination from septic tank effluent. This document presents results of the water quality investigation.
Toggle Image Hetch Hetchy Restoration Study 2006
Description: The restoration of Hetch Hetchy Valley on the upper Tuolumne River has once again captured the public's imagination. In order to provide for an informed dialogue about this issue, the Resources Agency has objectively evaluated the many Hetch Hetchy Valley restoration studies produced during the past two decades. In so doing, the state also recognized the great value and benefit of providing a central clearinghouse of all Hetch Hetchy restoration work. Moreover, in conducting the study, the state provided a neutral, public forum to discuss issues related to Hetch Hetchy restoration, such as water supply and water quality, flood management, cultural resources, environmental impacts, energy generation, and recreation.
Toggle Image Hocker Flat Draft Environmental Assessment Environmental Impact Report 08/01/2004 (PDF, 28.59 MB)
Description: The report evaluates the environmental impacts for the Hocker Flat Rehabilitation Site: Trinity River Mile 78 to 79.1. Working with the Bureau of Reclamation under the guidance of the Trinity River Restoration Program, the Department acted as the lead agency under CEQA for this project and provided the engineering design.
Toggle Image Hocker Flat Final Environmental Assessment Draft Environmental Impact Report for the Hocker Flat Rehabilitation Site: Trinity River Mile 78 to 79.1 11/01/2004 (PDF, NA)
Description: This report evaluates the environmental impacts for the Hocker Flat Rehabilitation Site: Trinity River Mile 78 to 79.1. Working with the Bureau of Reclamation under the guidance of the Trinity River Restoration Program, the Department acted as the lead agency under CEQA for this project and provided the engineering design.
Toggle Image Honey Lake Water Quality Investigation 06/14/1968 (PDF, 1.28 MB)
Description: The Northern District's groundwater data program detected increasing amounts of arsenic in various wells in Honey Lake Valley, Lassen County in 1967. The water quality unit of Northern District initiated an investigation to define the area of impaired water and locate the possible sources of impairment. This memorandum report gives the results of the investigation.
Toggle Image IEP - 1993.0801 A Review of the Interagency Ecological Study Program and Recommendations for its revision 08/01/1993 (PDF, NA)
Description: The Interagency Ecological Study Program was initiated in July 1970 by a Memorandum of Agreement (MOA) between four state and federal agencies (California Department of Fish and Game, California Department of Water Resources, U.S. Bureau of Reclamation, and the U.s. Bureau of Sport Fisheries and Wildlife). This MOA was an outgrowth of testimony at Water Rights Hearing 1379, which indicated that construction and operation of the State Water Project and Federal Central Valley Project may have been contributing to fish and wildlife problems in the estuary. This 1993 report describes the findings and recommendations of an ad hoc Review Team commissioned by the IESP Coordinators.
Toggle Image IEP - 1995.0728 Science Advisory Group Long Term Monitoring Review July 28, 1995 07/28/1995 (PDF, 24 KB)
Description: The Science Advisory Group is unanimous in its support for the long term monitoring components of the IEP. Monitoring activities, beginning in the 1960's have produced an invaluable set of observations to document changes in water quality, habitats, and populations of valued species. Although many complex problems remain unresolved, the Bay-Delta ecosystem is one of the best understood and most comprehensively studied estuarine ecosystems in the U.S. as a result of IEP. IEP data are the basis for the public's growing concern for the health of the Bay-Delta and its living resources; it has been critical in detecting the arrival of exotic species and in understanding their ecosystem-level effects; and it is the basis for environmental standards to protect this unique ecosystem.The IEP has made clear efforts in recent years to adapt.
Toggle Image IEP - 1999 Report of the 1980-1995 Fish, Shrimp, and Crab Sampling in the San Francisco Estuary, California 11/01/1999
Description: Before 1980, little scientific information was available to set water quality standards for the protection of the fish and invertebrates of San Francisco and San Pablo bays. In 1979, the Interagency Ecological Program (IEP) designed a plan to collect biological and physical data from South San Francisco Bay to the west delta. The State Water Resources Control Board (SWCRB) approved this plan and the Bay-Delta Division of the California Department of Fish and Game (CDFG), operating as part of the IEP, set the plan in action. The objective of the study was to determine the effects of freshwater outflow from the delta on the abundance and distribution of marine and estuarine fishes, shrimps, and crabs and use this knowledge to understand the volume and timing of freshwater outflow that is necessary for their well-being.
Toggle Image IEP - 2002.0522 Science Advisory Group May 22, 2002 Review of Environmental Monitoring Program 05/22/2002 (PDF, 204 KB)
Description: A core element of the Interagency Ecological Program (IEP) is the Environmental Monitoring Program (EMP), mandated by the State Water Resources Control Board to document the changing status of water quality and biological communities in the Sacramento-San Joaquin River Delta and downstream embayments of San Francisco Bay. Sustained, uninterrupted operation of the EMP for over 30 years is a remarkable achievement that in many ways serves as a model of successful state-federal partnership in environmental monitoring, providing one of the longest and most valuable records of combined water quality-biological monitoring in the U.S. Members of the IEP Science Advisory Group (SAG), including outside specialists recruited for the EMP technical review, unanimously endorsed the Environmental Monitoring Program.
Toggle Image IEP - 2003.0325 Environmental Monitoring Program Review and Recommendations Final Report, March 25, 2003 03/25/2003 (PDF, 1.25 MB)
Description: The intent of this review was to determine how the EMP could better meet current information needs for water resource mangement and protection. This review also reexamined program aims and the relationship of the EMP to other compliance and baseline aquatic monitoring activities in the Bay-Delta. This programmatic review was conducted in 2 phases. The first phase was an in-depth technical review of the EMP. The second phase was a review by program managers and legal staff from various IEP agencies. Overall, the EMP was found to be a tremendously valuable long-term environmental monitoring program providing essential data and information for resource management and scientific understanding of estuarine processes... the EMP's greatest asset is it's consistent and comprehensive long-term environmental data record, but needs improvement.
Toggle Image IEP - 2003.0325.2001-2002 Review of the Environmental Monitoring Program (EMP) for SWRCB in compliance with Water Right Decision 1641, Condition 11 03/25/2003 (PDF, 539 KB)
Description: DWR/USBR fund and maintain, in cooperation with the Califorinia Department of Fish and Game (DFG) and the US Geological Survey (USGS), a water quality compliance and baseline monitoring program referred to as the "Environmental Monitoring Program" (or EMP) for the Bay-Delta. D-1641 specifies three goals for this monitoring program: (1) to ensure compliance with the Bay-Delta water quality objectives; (2) to identify meaningful changes in any significant water quality parameters potentially related to operation of the State Water Project (SWP) or the Central Valley Project (CVP); and (3) to reveal trends in ecological changes potentially related to SWP/CVP operations. Condition 11 (e) requires DWR/USBR to evaluate the EMP and report their conclusions to the Executive Director of the State Water Resources Control Board every three years.
Toggle Image IEP - 2003.0807 EMP Response to 2002 IEP SAG Review 08/07/2003 (PDF, 1.53 MB)
Description: The IEP Science Advisory Group (SAG) provided an independent scientific review of the IEP Environmental Monitoring Program (EMP) as part of this program’s 2001-2002 comprehensive programmatic review. Here, the EMP review core team (including Wim Kimmerer) provides a written response to the SAG review dated May 22, 2002. The core team is particularly thankful for SAG comments regarding the basis for the EMP. These comments led to an intense and productive exploration of program aims and the conceptual basis for the EMP sampling design, yielding a much improved basis for the program and sampling design. As its “primary recommendation,” the SAG called for the EMP to focus on rapidly turning data into useful products by increasing the program’s "human intellectual investment" and working with outside researchers.
Toggle Image IEP - 2004.1201 Long-term Fish Monitoring Program Element Review 12/01/2004 (PDF, 2.79 MB)
Description: In spring 2004, we initiated a review of the Interagency Ecological Program fish monitoring program elements on behalf of the IEP Management Team. These elements constitute a substantial portion of IEP’s overall monitoring efforts. They represent some of IEP’s longest standing monitoring elements (also referred to as surveys) collecting data used for decades by scientists and resource managers throughout the San Francisco Estuary. As requested, this is a programmatic review to assemble relevant information that can help in the ongoing management and implementation of IEP. In addition, IEP management expects to use this information in decisions about performing more in-depth reviews of program elements and in setting overall program priorities and resource commitments.
Toggle Image IEP - 2006.0505 Delta Smelt Review-Science Advisory Group Report 05/05/2006 (PDF, 78 KB)
Description: On April 13/14, the IEP Science Advisory Group (SAG) met with IEP staff to review the current IEP effort monitoring and studying delta smelt. The purpose of this meeting was to examine current sampling programs and strategies with regard to their utility and value towards understanding what factors influence the health, i.e. the abundance, of delta smelt populations, and hence towards managing water project operations in the Delta that affect delta smelt. This report summarizes the key findings that the SAG believes deserve the most attention by IEP, including: 1. Delta smelt review epitomizes what IEP can and should accomplish.; 2. The power of collaboration; 3. Existing monitoring program needs to be continued with wome critical re-evaluation; 4. Use of data in management actions; 5. It's more of a POD than just a delta smelt issue.
Toggle Image IEP - 2006.0505.2 Science Advisory Group Report on the SAG's 2005-2006 Programmatic Review of IEP's Delta Smelt Program 05/05/2006 (PDF, NA)
Description: This document is comprised of two distinct but interrelated parts: (1) An independent review by the Scientific Advisory Group (SAG) of the Interagency Ecological Program’s delta smelt work that includes the SAG’s recommendations for improving the work and; (2) The IEP’s draft response to the findings and recommendations contained in the SAG Report. The SAG Report appears in its unaltered original font and formatting and the IEP draft responses to each recommendation are shown in bold. Cited references appear at the end of this document. The purpose was to examine current sampling programs and strategies with regard to their utility and value towards understanding what factors influence the health, i.e. the abundance, of delta smelt populations, and hence towards managing water project operations in the Delta that affect Delta Smelt.
Toggle Image IEP - 2008.0404 Moving the Interagency Ecological Program Into the Future, CALFED ISB, April 4, 2008 04/04/2008 (PDF, NA)
Description: As part of its mandate to oversee the quality and use of Science in the Bay-Delta system, the CALFED Independent Science Board (ISB) has been conducting a broad review of the Interagency Ecological Program (IEP). The goal of this effort is to promote innovation in and modernization of the program as well as integration with efforts outside of the Delta. Most importantly, the ISB feels strongly that on-going planning efforts such as Delta Vision and the Bay-Delta Conservation Plan must begin incorporating monitoring and research in general, and the IEP specifically, into their strategic planning. We encourage you, as IEP Directors, to engage with Delta Vision, BDCP and the CALFED Science Program in this regard.
Toggle Image IEP - 2008.0717 Response to CALFED ISB report "Moving the IEP into the Future" 07/17/2008 (PDF, 1.53 MB)
Description: This is a response to a April 4, 2008 letter to the Interagency Ecological Program (IEP) Directors regarding the CALFED Independent Science Board's (ISB) recommendations for the Future. Some of the ISB's recommendations are related to activities the IEP already performs, or that it could accomplish through its existing governance structure and funding sources. These include expanding data analysis and publications capabilities; increasing integration and collaboration with other monitoring and research programs within and outside the Delta; strategically analyzing current monitoring efforts, including protocols and locations; and increasing periodic, independent review of program elements and assessing the program's response to those review. Other ISB recommendations are beyond the current IEP scope and the BDCP may be able to help.
Toggle Image Indian Creek Flow Study TIR 81-2 (1976) 06/01/1981 (PDF, 4.77 MB)
Description: Indian Creek Flow Study. Northern District Technical Information Report No. 81-2. Department of Water Resources. 18 pp. and Appendices
Toggle Image Indian Creek Water Quality Survey 1980 (PDF, 1.81 MB)
Description: Boles, Gerald. 1980. Indian Creek Survey. (Water Quality Sampling at Antelope Reservoir, Indian Creek, and Little Grizzly Creek on September 28, 1979). Memorandum to Ralph Hinton. 11 pp.
Toggle Image Joint EIS/EIR Prototype Project to Augment Snowpack by Cloud Seeding 09/01/1990 (PDF, 11.85 MB)
Description: This report reviews the potential impacts to the environment of a proposed ground-based propane cloud seeding operation in Plumas and Sierra Counties.
Toggle Image Lake Almanor Limnologic Investigation 04/01/1974 (PDF, 4.46 MB)
Description: The Departments of Water Resources and Fish & Game cooperated in conducting a limnology study of Lake Almanor in 1972 and 1973. The study provided information useful in evaluating the environmental effects of proposed development.
Toggle Image Lake Oroville Runoff Enhancement Program Environmental Monitoring Report 1990-1994 12/01/1996 (PDF, 16.49 MB)
Description: 'DWR conducted a study of the feasibility of using ground-based cloud seeding to augment snow pack on a portion of the Plumas and Tahoe National Forests from 1991 to 1994. Plumas National Forest required an environmental monitoring program to determine effects of the potential project on water quality, channel morphology, stream sedimentation, benthic macroinvertebrate populations, fish populations, streamflow and fish habitat.
Toggle Image Leaching (Drought Tip 92-16) 1993 (PDF, 51 KB)
Description: Leaching is applying irrigation water in excess of the soil moisture depletion level to remove salts in the root zone.
Toggle Image Limnological Investigation of Morris Reservoir 12/01/1987 (PDF, 5.83 MB)
Description: This report presents the findings of a limnological investifation of Morris Reservoir cooperatively conducted by the Department of Water Resources and the City of Willits. The report discusses loss of storage capacity in the reservoir due to sedimentation , and organic and inorganic parameters that contribute to the poor quality of potable water from the reservoir.
Toggle Image M & T Chico Ranch Conjunctive Use Investigation Phase III Report 12/01/1996 (PDF, 10.43 MB)
Description: This phase reassesses the potential water supply available through conjuntive use and estimates program costs, impact mitigation, institutional constraints, and evnrionmental compliance requirements. In addition, this report documents and presents the findings from previous aquifer testing and well development with the lower-confined Tuscan Formation aquifer. The investigation was undertaken as a part of the Groundwater Development effort of the State Water Project Future Supply Program.
Toggle Image Main Stem Trinity River Watershed Erosion Investigation 03/01/1980 (PDF, 9.46 MB)
Description: This report is the result of a one-year reconnaissance study of the main stem Trinity River watershed. The report provides data for evaluation of land and resources management options and should be used as a reference for in-depth, site-specific studies of problem areas.
Toggle Image Merced River Gravel Augmentation Project Monitoring Report 12/01/2004 (PDF, 7.84 MB)
Description: The Merced Hatchery Project is on the Merced River near Snelling, just below the Crocker-Huffman dam. Originally constructed in 1991, the project consisted of excavation and replacement of bed material in approximately 400 feet of channel to improve salmon spawning conditions. The project has since evolved into a gravel replenishment site, with about 200 feet of the channel being periodically filled with suitable spawning material.
Toggle Image Merced River Salmon Habitat Enhancement Project - Ratzlaff Reach Engineering Report 03/01/2000
Description: This phase of the project is located on the Merced River between river miles 40.0 and 40.5, approximately 6 miles southwest of the town of Snelling. It was Phase II (Ratzlaff Reach) of the Merced River Salmon Habitat Enhancement Project (MRSHEP), but the first construction phase.
Toggle Image Merced River Salmon Habitat Enhancement Project Phase III - Robinson Reach Engineering Report 06/01/2001
Description: This phase of the Merced River Salmon Habitat Enhancement Project (MRSHEP) is located on the Merced River between river miles 42 and 44, just upstream of the Highway 59 bridge. It consists of two of the five reaches of the MRSHEP, plus an adjacent 2000 foot reach upstream. The project was originally approved for funding under the Delta Pumping Plant Fish Protection (Four Pumps) Agreement, CALFED, and by the Department of Fish and Game (Proposition 70 Funds) in 1998.
Main Body (PDF, 9.93 MB)
Appendix A (PDF, 7.26 MB)
Appenidx B (PDF, 425 KB)
Appendix C (PDF, 4.13 MB)
Appendix D (PDF, 6.84 MB)
Appendix E (PDF, 1.66 MB)
Appendix F (PDF, 2.12 MB)
Appendix G (PDF, 1.82 MB)
Appendix H (PDF, 9.97 MB)
Appendix I (PDF, 644 KB)
Appendix J (PDF, 120 KB)
Appendix K (PDF, 3.99 MB)
Toggle Image Merced River Salmon Habitat Enhancement Project Phase III - Robinson Reach, Final Engineering and Construction Report 08/01/2002
Description: This phase of the Merced River Salmon Habitat Enhancement Project (MRSHEP) is located on the Merced River between river miles 42 and 44, just upstream of the Highway 59 bridge. It consists of two of the five reaches of the MRSHEP, plus an adjacent 2000 foot reach upstream. The project was originally approved for funding under the Delta Pumping Plant Fish Protection (Four Pumps) Agreement, CALFED, and by the Department of Fish and Game (Proposition 70 Funds) in 1998.
Main Body 1 (PDF, NA)
Main Body 2 (PDF, NA)
Appendix A (PDF, NA)
Appendix B (PDF, NA)
Appendix C (PDF, NA)
Appendix D (PDF, NA)
Appendix E (PDF, NA)
Appendix F (PDF, NA)
Appendix G (PDF, NA)
Appendix H (PDF, NA)
Toggle Image Merced River Salmon Habitat Enhancement Project Robinson Reach (Phase III) 2004 Geomorphic Monitoring Report 02/01/2006 (PDF, NA)
Description: This phase of the Merced River Salmon Habitat Enhancement Project (MRSHEP) is located on the Merced River between river miles 42 and 44, just upstream of the Highway 59 bridge. It consists of two of the five reaches of the MRSHEP, plus an adjacent 2000 foot reach upstream. The project was originally approved for funding under the Delta Pumping Plant Fish Protection (Four Pumps) Agreement, CALFED, and by the Department of Fish and Game (Proposition 70 Funds) in 1998.
Toggle Image Miners Ravine Habitat Assessment 2002 (PDF, 3.06 MB)
Description: The objective of this habitat assessment is to determine the quality and quantity of habitat for anadromous fish species on Miners Ravine and to document natural and artificial structures in the creek that may be impediments for salmonid migration. The survey was initiated in response to CALFED goals for the Sacramento EMZ and the Hidden Valley Homeowners Association’s inquiry to the Fish Passage Improvement Program on the viability of improving fish passage at Cottonwood Dam.
Toggle Image Northern Pike Containment System at the Outlet of Lake Davis on Big Grizzly Creek - Mitigated Negative Declaration and Initial Study 2006
Description: The objective of the project is to construct a containment system that will prevent fish, of any life stage, from passing through the Lake Davis outlet and moving downstream into Big Grizzly Creek, and into the Feather and Sacramento River system.
Toggle Image Northern Pike Containment System at the Outlet of Lake Davis on Big Grizzly Creek - Mitigation and Monitoring Plan and Report 2007
Description: The Mitigation and Monitoring Plan and Report describe compliance with monitoring, reporting, and mitigation requirements for the project.
Toggle Image Overview Restoration Planning Process 2006 (PDF, 773 KB)
Description: In 2003, the State legislature passed the Salton Sea Restoration Act which states that “it is the intent of the Legislature that the State of California undertake the restoration of the Salton Sea ecosystem and the permanent protection of the wildlife dependent on that ecosystem.” The State Secretary for Resources is to prepare an Ecosystem Restoration Study and a Programmatic Environmental Impact Report (PEIR). These reports are to be submitted to the legislature by the end of 2006.
Toggle Image Panoche/Silver Creek Watershed Assessment Final Report 09/28/1998 (PDF, 236 KB)
Description: Prepared by: MFG, INC. consulting scientists and engineers
Toggle Image Panoche/Silver Creek Watershed Management and Action Plan, 2001 Annual Monitoring Report 05/01/2002
Description: Prepared by MFG, Inc consulting scientists and engineers for Calfed Grant 2000-E02, May 2002
Report (PDF, 182 KB)
Figure 1 (PDF, 2.38 MB)
Figure 2 (PDF, 852 KB)
Appendix A
Figure 1 (PDF, 2.38 MB)
Figure 2 (PDF, 852 KB)
Figure 3 (PDF, 221 KB)
Figure 4 (PDF, 18 KB)
Figure 5 (PDF, 230 KB)
Figure 6 (PDF, 17 KB)
Figure 7 (PDF, 260 KB)
Figure 8 (PDF, 21 KB)
Appendix B
Maria Checklist (PDF, 67 KB)
Toggle Image Panoche/Silver Creek Watershed, Technical Memoranda Nos. 1 and 2 Review of Previous Studies, Watershed Improvement Projects, and GIS Coverages 06/01/2002 (PDF, NA)
Description: This document provides a summary of previous studies, watershed improvement projects, and geographic information systems (GIS) coverages in the Panoche/Silver Creek Watershed (PSCW), as required in the work plan associated with CALFED grant project 2000-E02 (Westside Resource Conservation District [WRCD], 2000).
Toggle Image Quantification Settlement Agreement (QSA) Fact Sheet 02/23/2005 (PDF, 69 KB)
Description: The Colorado River is the source of much of Southern California’s water supply. It has been allocated among western states through a series of laws, court decisions and agreements dating back to the 1920s. Until recently, Arizona and Nevada did not use their full share of Colorado River water, and California was allowed to use water that was not used by these states. Due to growth in these other states, California has been required to reduce its use of Colorado River water to its basic allocation.
Toggle Image Reclaiming Sodic and Saline/Sodic Soils (Drought Tip 92-33) 1993 (PDF, 49 KB)
Description: Excessive exchangeable sodium in the soil can severely degrade the soil structure, which severely reduces the soil infiltration rate.
Toggle Image Review of the Bay Program by the Science Advisory Group 10/01/1999 (PDF, 49 KB)
Description: The SAG had several comments and recommendations for the IEP, with regard to the Bay Program: I. Fisheries and macroinvertegrate monitoring is extremely important and should be continued; II. Both people and funding resources have been diverted from the Bay program by competing demands for DFG expertise. This diversion of resources has been to the detriment of the program. A renewed commitment to the program is needed. III. The SAG identified 4 goals that have guided the program. These goals should be consulted frequently to make sure that the program is on focus. IV Data collection and enumeration of fishes has dominated the first 20 years of the program and this monitoring must continue, but the program must also evolve with increased resources for analysis and synthesis to explain the mechanisms behind the patterns observed.
Toggle Image Riparian Vegetation of the San Joaquin River 05/01/2002 (PDF, 6.15 MB)
Description: The focus of this study is to identify, describe and map the extent and diversity of riparian habitats found along the main stem of the San Joaquin River, to document the diversity and distribution of plant species, both native and introduced, to locate and map invasive exotic vegetation, and to provide necessary information toward the development of a map of restoration potential along the river.
Toggle Image Sacramento River Bank Erosion Investigation Memorandum Progress Report (1994) 1994 (PDF, 18.18 MB)
Description: This report discusses geomorphic characteristics such as erosion, deposition, and meandering in the 100-mile reach between Red Bluff and Colusa. The report also considers long-range geomorphic changes caused by human activities such as dam construction, bank protection, and gravel mining.
Toggle Image Salt Balance in the San Joaquin Valley (Water Facts 20) 2001 (PDF, 63 KB)
Description: Water Facts are short reports on water resources issues of general interest. This Water Facts details the continued salt buildup in California's San Joaquin Valley water and soils and the reduced productivity and threatened agricultural sustainability.
Toggle Image Salton Sea Ecosystem Restoration Program Brochure 2005 (PDF, 373 KB)
Description: Salton Sea Ecosystem Restoration Program Brochure
Toggle Image Salton Sea Ecosystem Restoration Program Update 05/01/2006 (PDF, 1.00 MB)
Description: Overview of Final Range of Alternatives
Toggle Image Salton Sea History 2005 (PDF, 25 KB)
Description: Salton Sea History
Toggle Image Salton Sea Location Map 2005 (JPG, 57 KB)
Description: Salton Sea Location Map
Toggle Image Salton Sea Regional Seismicity Map 2005 (JPG, 132 KB)
Description: Salton Sea Regional Seismicity Map
Toggle Image Salton Sea Watershed Map 2005 (JPG, 37 KB)
Description: Salton Sea Watershed Map
Toggle Image San Clemente Dam Seismic Saftey Project EIR/EIS 2008
Description: The California Department of Water Resources (DWR) and the U.S. Army Corps of Engineers (USACE) have prepared this Final Environmental Impact Report (EIR) and Environmental Impact Statement (EIS) under the California Environment Quality Act (CEQA) of 1970, and the National Environmental Policy Act (NEPA) of 1969. The EIR/EIS addresses the San Clemente Dam Seismic Safety Project.
Volume1 (PDF, 42.39 MB)
Volume 2 (PDF, 80.57 MB)
Volume 3 (PDF, 135.89 MB)
Volume 4 (PDF, 126.47 MB)
Toggle Image San Joaquin River Management Plan 02/01/1995
Description: This plan was prepared as stipulated in Assembly Bill 3603. It was prepared by the Advisory Council and Action Team of SJRMP. The plan describes and recommends specific projects, studies, and acquisitions that will help revive and protect the health of the San Joaquin River system.
Title (PDF, 935 KB)
Table of Contents (PDF, 221 KB)
Foreword (PDF, 361 KB)
Introduction (PDF, 3.91 MB)
Recommended Projects Pages 11-47 (PDF, 6.64 MB)
Recommended Projects Pages 48-93 (PDF, 7.19 MB)
Recommended Projects Pages 94-115 (PDF, 2.58 MB)
Recommended Studies (PDF, 6.46 MB)
Recommended Acquisitions (PDF, 4.80 MB)
Subcommittees (PDF, 1.02 MB)
References (PDF, 289 KB)
Glossary (PDF, 1.48 MB)
Appendix A (PDF, NA)
Appendix B (PDF, NA)
Advisory Council (PDF, 1.54 MB)
Action Team (PDF, 401 KB)
Toggle Image San Joaquin Valley Drainage Implementation Program MOU 12/01/1991 (PDF, 80 KB)
Description: SJVDIP is an interagency program established in 1991. among four California State and four federal agencies. The MOU created a partnership among agencies to help implement recommendations of the San Joaquin Valley Drainage Program published as the Rainbow Report in 1990. The 1990 report recommended a number of in-valley options to manage agricultural drainage and drainage-related problems. The 1990 report was updated by the interagency program in a SJVDIP Final Report in 2000. The SJVDIP then developed a new Drainage Management Strategy in 2000 to implement the updated recommendations.
Toggle Image Stanislaus River Oakdale Recreation Area Restoration Project - Summary of Conceptual Designs 2002 (PDF, 16.90 MB)
Description: This summary describes and illustrates three conceptual designs that focus on improving rearing habitat for chinook salmon. Restoration elements of the designs include floodway widening, pond isolation, and floodplain construction. Rearing design features include alcoves, backwaters, and secondary rearing channels.
Toggle Image Stream Gage Maintenance Mitigated Negative Declaration 09/01/2002 (PDF, 1.39 MB)
Description: The purpose of this project is to identify stream gage maintenance needs and to obtain permits for a five-year maintenance plan incorporating avoidance and mitigation measures when necessary.
Toggle Image Study of Nitrates in the Groundwater of the Chico Area of Butte County 1994 (PDF, 9.26 MB)
Description: This groundwater investigation includes an area of about 26 square miles in, and adjacent to, the City of Chico. This report describes the study, conducted in three phases, which investigated excessive nitrate concentrations in domestic water wells in the area.
Toggle Image Summary of Implementing Legislation 03/30/2005 (PDF, 68 KB)
Description: State legislation was enacted in 2003 to implement the Quantification Settlement Agreement and to establish state policy for restoring the Salton Sea. The legislation requires the State of California to take a number of actions with respect to the restoration of the Salton Sea, and to coordinate certain aspects of the Quantification Settlement Agreement implementation with this restoration.
Toggle Image Summary of Related Programs 03/30/2005 (PDF, 68 KB)
Description: The Quantification Settlement Agreement (QSA) and QSA-related agreements are agreements among the Coachella Valley Water District (CVWD), Imperial Irrigation District (IID), Metropolitan Water District of Southern California, San Diego County Water Authority (SDCWA), U.S. Department of the Interior, Department of Fish and Game (DFG), and Department of Water Resources. The QSA and related agreements settled long-standing disputes among the local agencies regarding the allocation of Colorado River water within the State of California and provided for long-term water transfers between IID and SDCWA, and IID and CVWD.
Toggle Image Sutter Bypass East Borrow Canal Water Control Structures Project - Mitigated Negative Declaration and Initial Study 2009
Description: The specific objectives of this project are to: 1) Replace the existing manually operated Weir No. 2 flashboard structure with a remotely operated gate structure that is safer and more effective to operate. 2) Reconstruct the earthen Willow Slough Weir and replace its culverts to improve flow of water from the East Borrow Canal into Willow Slough. 3) Replace the fish ladders at both weirs to improve passage for migrating Chinook salmon (Oncorhynchus tshawytscha) and steelhead (Oncorhynchus mykiss).
Toggle Image Tuolumne River La Grange Gravel Addition Project Phase II Geomorphic Monitoring Report 12/01/2004 (PDF, 3.64 MB)
Description: The project site is located near the town of La Grange on the Tuolumne River. The lower portions of the Tuolumne River have been deprived of coarse sediment. Since the construction of La Grange Dam in 1893, coarse sediment supply from the upper Tuolumne River watershed is no longer supplied to the lower reaches of the river. This causes bed degradation, bed coarsening, and loss of alluvial deposits which negatively impacts salmon production by reducing quantity and quality of spawning and rearing habitat. The purpose of this project is to augment the coarse sediment supply to the lower Tuolumne River with clean, graded gravel that is intended to mimic the natural process of coarse sediment supply transport.
Toggle Image Upper Yuba River Studies Program Water Temperature Monitoring Technical Memorandum 2007 (PDF, 120 KB)
Description: In 2006, CH2M HILL entered into an agreement with the Department of Water Resources to download and maintain the high priority data loggers deployed under the Upper Yuba River Studies Program. This technical memorandum describes maintenance and instream data collection activities. A summary of the temperature monitoring sites, their period of record and status of loggers as of October 2007 is included in the memorandum.
Toggle Image Upper Yuba River Watershed Chinook Salmon and Steelhead Habitat Assessment 2007 (PDF, 7.94 MB)
Description: This document, prepared by the Upper Yuba River Studies Program Study Team, presents the results of data collection, field studies, and modeling conducted by the study team to characterize current habitat conditions in the upper Yuba River watershed and assess whether the available habitat upstream of Englebright Dam is capable of supporting Chinook salmon and steelhead.
Toggle Image Water Quality Conditions in the Sacramento-San Joaquin Delta 1970 - 1993 12/31/1996 (PDF, 11.71 MB)
Description: The upper estuary has been characterized as a dynamic system, changing as it responds to the intricate interactions of physical, chemical, and biological forces. This was reflected by the lack of a consistent long-term trend for most variables between 1970 and 1993. Among the physical variables that did demonstrate a trend, total exports, Secchi disk depth, and wind velocity increased over the period of record. The increase in Secchi disk depth was accompanied by a decrease in suspended and volatile solids. Among the biological variables that demonstrated a trend, chlorophyll a concentrations decreased in the southern and Suisun Bay regions, and diatoms decreased throughout the upper estuary.
Toggle Image Water Quality Conditions in the Sacramento-San Joaquin Delta During 1997-2000 05/01/2004 (PDF, 5.39 MB)
Description: This report summarizes the results of water quality monitoring and special studies conducted by the Department of Water Resources (DWR) and the U.S. Bureau of Reclamation (USBR) within the Sacramento-San Joaquin Delta and Suisun and San Pablo bays (the upper San Francisco Estuary) from 1997 to 2000. This monitoring is mandated by Water Right Decision 1641(D-1641) of December 1999, and its predecessor, Water Right Decision 1485 (D-1485) of August 1978. This report is submitted to fulfill the reporting requirements of these decisions.
Toggle Image Water Quality Conditions in the Sacramento-San Joaquin Delta and Suisun and San Pablo Bays during 2010 12/31/2011 (PDF, 6.76 MB)
Description: This report summarizes the results of water quality monitoring and special studies conducted by the Environmental Monitoring Program (EMP) within the Sacramento-San Joaquin Delta and Suisun and San Pablo bays (the estuary) during calendar year 2010. This monitoring is mandated by Water Right Decision 1641 (D-1641) and this report is being submitted to fulfill the reporting requirements of that decision. The results gathered from the sampling of these 15 parameters are described herein. Parameters such as water temperature, Secchi disk depth, dissolved oxygen (DO) concentration, specific conductance, dissolved inorganic nitrogen, orthophosphate, and volatile suspended solids were within their historical range. Measured parameters exhibited seasonal variation as well as changes in response to significant rainfall events and in flow rates.
Toggle Image York Creek Diversion Modification Project, Napa County, California - Initial Study 2002 (PDF, 1.63 MB)
Description: The objective of the project is to improve fish passage at the York Creek diversion structure so that steelhead could gain consistent and reliable access to the reach of York Creek between the diversion and York Creek Dam. The proposed project would provide improved fish passage by cutting down the concrete diversion structure and raising the streambed elevation below the diversion with boulder weirs to reduce the drop that currently exists under most flow conditions.

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