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.
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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.
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Water Quality
Water Quality
South Old River Salinity Transect Study 09/21/2012 (PDF, 14.61 MB)Description: Surface salinity transects on SOR to determine the sources and effects of agricultural and other discharges throughout the river. Identifies major salt contributors and their impacts. Water quality data for some of the discharge and tributary inputs.
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.
Water Quality Conditions in the Sacramento-San Joaquin Delta and Suisun and San Pablo Bays during 2009 12/01/2010 (PDF, 7.02 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 (Delta) and Suisun and San Pablo bays (the upper San Francisco estuary) during calendar year 2009. This monitoring is mandated by Water Right Decision 1641 (D-1641) and this report is being submitted to fulfill the reporting requirements of this decision.
Summary and Findings of Data Collected from the Sacramento-San Joaquin Delta Region, October 2007 through September 2009 08/09/2010 (PDF, NA)Description: MWQI Report
2010 Electrical Conductivity in Shallow Groundwater Map 08/01/2010 (PDF, 1.34 MB)Description: Aerial distribution map displays 2010 electrical conductivity within 20 feet, at interval depths of 5 feet, throughout the San Joaquin Valley.
Water Quality Conditions in the Sacramento-San Joaquin Delta and Suisun and San Pablo Bays during 2008 04/01/2010 (PDF, 4.45 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 upper San Francisco Estuary) during calendar year 2008. This monitoring is mandated by Water Right Decision 1641 (D-1641) and this report is being submitted to fulfill the reporting requirements of this decision.
South Old River Salinity Transect Study Brief, 2009 08/01/2009 (PDF, 1.75 MB)Description: Brief update on the first year's results of the South Old River Transect Study. Salinity transects were conducted by boat to determine the effects of saline agricultural discharges on conductivity in the river. GPS coordinates were combined with conductivity measurements to generate color-coded ArcGIS maps along the river showing where the highest levels occurred.
Water Quality Conditions in the Sacramento-San Joaquin Delta and Suisun and San Pablo Bays during 2007 2009 (PDF, 4.22 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 upper San Francisco Estuary)
during calendar year 2007. This monitoring is mandated by Water Right Decision 1641 (D-1641) of December 1999 and this report is
being submitted to fulfill the reporting requirements of this decision. Chlorophyll a concentrations for 2007 showed typical
seasonal patterns and were generally below 10 µg/L for most regions and concentrations ranged between 0.25 µg/L and 108.00 µg/L
throughout the estuary. All organisms collected in 2007 fell into 11 categories. Centric diatoms, cyanobacteria, unidentified
flagellates, green algae and pennate diatoms constituted 96.88% of the organisms collected.
Deer Creek Water Quality Investigation 1997-2000 10/01/2008 (PDF, 9.75 MB)Description: This report summarizes the results of water quality monitoring and special studies conducted from 1997 to 2000 by the Northern District Water Quality and Biology Section within the Deer Creek watershed in Tehama County, California.
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.
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.
Boundaries of Public Water Agencies, San Joaquin Valley 2008 2008 (PDF, 7.78 MB)Description: The Department of Water Resources provides a detailed map of public water agencies and their boundaries within the San Joaquin Valley.
Water Quality Conditions in the Sacramento-San Joaquin Delta and Suisun and San Pablo Bays During 2006 2008 (PDF, 1.68 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 upper San Francisco Estuary)
during calendar year 2006. This monitoring is mandated by Water Right Decision 1641 (D-1641) of December 1999 and this report is
being submitted to fulfill the reporting requirements of this decision.
Mercury Contamination in Fish from Northern California Lakes and Reservoirs 07/01/2007 (PDF, 387 KB)Description: Mercury Contamination in Fish from Northern California Lakes and Reservoirs
California State Water Project Watershed Sanitary Survey 2006 Update 06/01/2007 (PDF, 35.77 MB)Description: The contaminant sources in the SWP watersheds have been well documented in the three previous sanitary surveys. The California Department of Health Services (CDHS) requested that
the 2006 Update address the Jones Tract levee failure and emergency response procedures, efforts to coordinate pathogen monitoring in response to the Long Term 2 Enhanced Surface
Water Treatment Rule (LT2ESWTR), and a review of significant changes to the watersheds and their impacts on water quality.
Water Conservation News Fall 2006-Winter 2007 12/01/2006 (PDF, 1.20 MB)Description: Water Conservation News provides information on water use efficiency developments. This free newsletter is now published semi-annually by the California Department of Water Resources, Office of Water Use Efficiency.
Water Quality Conditions in the Sacramento-San Joaquin Delta and Suisun and San Pablo Bays During 2004 12/01/2006 (PDF, 3.80 MB)Description: This report, entitled Water Quality Conditions in the Sacramento-San Joaquin Delta and Suisun and San Pablo Bays
during 2004, summarizes the findings of the EMP for calendar year 2004. Separate chapters are devoted to the water quality,
benthic, phytoplankton, zooplankton, and special study components of the EMP. Within each chapter, the major patterns and trends
demonstrated by the water quality and biological data within and between years are described in the text and displayed in summary
plots and tables. This report is submitted to the SWRCB to fulfill the reporting requirements of D-1641.
Water Quality Conditions in the Sacramento-San Joaquin Delta and Suisun and San Pablo Bays During 2005 12/01/2006 (PDF, 2.36 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) during calendar year 2005. This monitoring is mandated by Water Right Decision 1641 (D-1641)
of December 1999 and this report is being submitted to fulfill the reporting requirements of this decision.
Water Quality Conditions in the Sacramento-San Joaquin Delta and Suisun and San Pablo Bays During 2003 10/01/2006 (PDF, 4.40 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) during calendar year 2003. This monitoring is mandated by Water Right Decision 1641 (D-1641) of
December 1999. This report is being submitted to fulfill the reporting requirements of this decision.
Summary of Water Management Elements in the Safe Drinking Water, Water Quality & Supply, Flood Control, River & Coastal Protection Bond Act of 2006 Proposition 84 08/01/2006 (PDF, NA)Description: The California Safe Drinking Water, Water Quality and Supply, Flood Control, River and Coastal Protection Bond Act (Proposition 84) makes new investments for flood protection and water management programs.
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.
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.
Hetch Hetchy Restoration Study 2006Description: 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.
Hetch Hetchy Restoration Study Report (PDF, 12.30 MB)
Hetch Hetchy Restoration Study Appendices (PDF, 2.48 MB)
Hetch Hetchy Restoration Study Appendices (PDF, 2.48 MB)
Water Quality Conditions in the Sacramento-San Joaquin Delta and Suisun and San Pablo Bays During 2001-2002 10/01/2005 (PDF, 4.32 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 the Suisun and San Pablo bays
(the upper San Francisco Estuary) from 2001 through 2002. This monitoring is mandated by Water Right Decision 1641(D-1641) of
December 1999. This report is being submitted to fulfill the reporting requirements of this decision.
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.
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.
DWR News People Summer 2004 06/01/2004 (PDF, 882 KB)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.
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.
DWR News People Spring 2004 03/01/2004 (PDF, 3.59 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.
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.
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.
Water Quality Conditions in the Sacramento-San Joaquin Delta During 1996 07/31/2001 (PDF, 5.88 MB)Description: Water year 1996 was classified as a wet year with an average stream flow similar or somewhat above that in 1993. As in many recent years, snow pack water content was below average and precipitation was high early in the spring. Dilution associated with the high stream flow produced low nutrient and specific conductance, and high dissolved oxygen concentrations compared with drier years - especially the recent drought years 1987-1992. However, the pattern of highest nutrient concentration in the winter among seasons and in the south delta among regions persisted. Water quality conditions in 1996 were also characterized by comparatively higher Secchi disk depth than in the early 1970's. Further, even though 1996 was a wet year, the dissolved oxygen concentration in the Stockton Ship Channel was below the USEPA and RWQCB standards.
Water Quality Assessment of the State Water Project, 1998-99 07/01/2000 (PDF, 1.87 MB)Description: This report describes water quality in the State Water Project during 1998-99. The Executive Summary covers important drinking water parameters such as salinity and trihalomethane precursors. The rest of the report assesses all parameters including metals and pesticides. Division of Operations and Maintenance, Environmental Assessment Branch
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.
Water Quality Assessment of the State Water Project, 1996-1997 09/01/1999 (PDF, 4.17 MB)Description: Water quality in the State Water Project was affected by several events during 1996-97. This report discusses several trends with respect to important drinking water parameters such as salts, organic carbon, and nutrients. Division of Operations and Maintenance, Environmental Assessment Branch
Water Quality Conditions in the Sacramento-San Joaquin Delta During 1995 08/31/1999 (PDF, 3.41 MB)Description: Water year 1995 was a wet year, ending an eight-year period of predominantly dry and critically dry years. After a relatively dry fall, January and March precipitation was heavy and produced flooding in the Central Valley. By May 1, precipitation was 165% of average, and reservoir storage was 110% of average. Water quality for all Delta regions was within the historical range of values throughout the 1995 calendar year. Salinity and nutrient concentrations were lower than levels measured during the dry water years preceding the wet 1995 water year. Salinity intrusion was minor in the Suisun and San Pablo bays from October through December 1995, when Delta outflow decreased. Finally, dissolved oxygen concentrations were stable throughout the year at relatively high concentrations.
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.
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.
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.
Analysis of Water Quality Impacts from Ground Water Pump-in on the State Water Project, 1990-1992 02/01/1994 (PDF, 46.36 MB)Description: Report discusses the impacts pumped in ground water had on State Water Project water quality for the period covering the years 1990 -1992.
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.
Ground Water (Water Facts 6) 06/01/1993 (PDF, 106 KB)Description: Eleven frequently talked-about groundwater topics are discussed in this Water Facts.
Vegetative Response to Geothermal Drift at the Bottle Rock Geothermal Power Plant 1984-1992 05/01/1993 (PDF, 2.23 MB)Description: The Department of Water Resources is required by the California Energy Commission and Lake County to monitor and report impacts to native vegetation from cooling tower drift and steam field development and operation. Vegetative damage and associated loss of wildlife habitat were identified as potential adverse effects of geothermal development at Bottle Rock during the application process.
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.
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.
Water Quality Guidelines for Vegetable and Row Crops (Drought Tip 92-17) 1993 (PDF, 373 KB)Description: Technical pamphlet regarding water quality guidelines for vegetable and row crops.
Pit River Water Quality Study 12/01/1992 (PDF, 14.06 MB)Description: This study was designed to help manage the Pit River, manage its beneficial uses, and plan for future conjunctive ground and surface water uses. The study presents information to help develop objectives for water quality control.
Water Quality Guidelines for Trees and Vines (Drought Tip 92-19) 1992 (PDF, 395 KB)Description: Technical pamphlet discussing water quality guidelines for trees and vines.
All About Water 1991 (PDF, 19.61 MB)Description: An AIMS style teacher's guide containing 26 hands-on lessons integrating science, math, language arts, geography, art, music drama and health. The major themes addressed are Systems and Interaction, Energy, Stability and Scale and Structure. Water topics include where water comes from, water cycle, ground water, water pollution and conservation. A storyline can be used to connect the lessons using puppets and scenery.
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.
Colusa Basin Drain Water Quality Literature Review Memorandum Report 04/01/1990 (PDF, 2.60 MB)Description: This report presents a literature review of water quality in the Colusa Basin Drain (CBD), identifies potential impacts of alternatives to control flooding and drainage in the CBD, and recommends further study needs with respect to water quality in the CBD.
Pesticide Monitoring of Surface Waters in the Northern District Memorandum Report, 04/01/1990 (PDF, 2.74 MB)Description: The purpose of this investigation was to determine the extent of pesticide monitoring of surface waters in Northern California, and to determine additional monitoring requirements. The study area includes the 13 counties of Northern District and those monitoring stations within Sutter and Yolo Counties that are located on the Sacramento River and its major drainages.
Historic Sacramento River Temperature Data, Keswick to Butte City Memorandum Report 04/01/1990 (PDF, 7.25 MB)Description: This report is a compilation of historic Sacramento River water temperature data from Keswick Reservoir to Butte City through 1989.
Shasta Valley Water Quality Literature Review 03/01/1990 (PDF, 1.86 MB)Description: This report identifies locations in the Shasta Valley where water quality impairments produce conditions unsuitable for beneficial uses. It also identifies those situation where the current data is inadequate to assess surface or ground water suitability for beneficial use.
Bottle Rock Geothermal Powerplant Biological Resources Mitigation and Monitoring Biennial Report 04/01/1988 (PDF, 4.43 MB)Description: This report was prepares to fulfill a portion of the Department's biological resource mitigation and monitoring requirements for the Bottle Rock Geothermal Powerplant. The purpose of this report is to quanitfy the effectiveness of the wildlife mitigation performed on the Francisco leasehold.
Water Temperature Effects on Chinook Salmon-Emphasis on the Sacramento River, A Literature Review 1988 (PDF, 1.71 MB)Description: This report reviews published literature on temperature requirements of chinook salmon. Emphasis is placed on the requirements of fish in the Sacramento River. Recommendations are included to gather the data necessary for a complete understanding of the temperature requirements for all life stages of each of the four runs occuring in the River.
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.
Smith River Plain Groundwater Study 12/01/1987 (PDF, 7.94 MB)Description: This study was undertaken to expand knowledge of the geologic and hydrologic conditions that exist in the Smith River Plan Basin, determine the availability of groundwater and its quality, and re-evaluate existing monitoring wells to ensure they were representative of basin conditions.
Cooperative Groundwater Study for the Little Lake Valley 08/01/1987 (PDF, 3.06 MB)Description: This report presents the findings of a one-year cooperative groundwater study between DWR and the City of Willits. It discusses Little Lake Valley geology, groundwater, and groundwater quality conditions. A separate Morris Reservoir limnology report was also prepared.
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.
Klamath River Water Quality Study Hamburg to Orleans 03/01/1987 (PDF, 11.79 MB)Description: This study, which was conducted from May 1984 to January 1986, was undertaken to investigate the water quality of the Klamath River between Hamburg and Orleans, a remote, little-used reach of the river. This report, which describes the geology, climate, level of development, and water supply of the study area, sets forth prevailing hydrologic conditions, summarizes water quality data, and provides findings and conclusions of the investigation.
Sacramento River Water Quality and Biology (Keswick Dam to Verona) A Literature Review 03/01/1986 (PDF, 6.51 MB)Description: This report assembles and summarizes most of the water quality and biological (excluding fisheries) information available for the Sacramento River.
Shasta and Klamath Rivers Water Quality Study 02/01/1986 (PDF, 5.01 MB)Description: The quality of these two rivers has been monitored at several stations for more than 20 years and resulting data show a great variation. Complaints have been received about excessive foaming, water discoloration, overabundance of algae, and unsightliness. This study was undertaken to investigate the water quality and its variation, from Iron Gate Dam to the guagin station, "Klamath River near Seiad Valley".
This report includes a brief overview of the study area, its geology, climate, ...
Alturas Groundwater Basin Water Quality Study 1986 (PDF, 5.38 MB)Description: The principal objective of the investigation leading to this report was to update knowledge of water quality of the Alturas Ground Water Basin in south-central Modoc County. The basin encompasses an area of about 135 square miles, and contains approximately 7.5 million acre-feet of groundwater in storage to a depth of 800 feet.
Enlarged Shasta Reservoir Study Water Quality Summary 1986 (PDF, 9.84 MB)Description: The Northern District was responsible for identifying study needs and developing and conducting water quality and biological studies to allow evaluation of the ecosystem alterations from the proposed enlargement of Shasta Reservoir. The study rationale and proposal are included with this report.
Surprise Valley Groundwater Basin Water Quality Study 1986 (PDF, 3.74 MB)Description: This investigation leading to this report was intended to update knowledge of water quality in Surprise Valley Groundwater Basin.
Some Physical Chemical and Bological Characteristics of the Eel River Estuary 06/01/1977 (PDF, 4.11 MB)Description: A study was initiated in 1973 to determine the invertebrate and periphyton assemblages, and the physical and chemical characteristics of the Eel River estuary. Due to termination of funding, this study was concluded durin the 1976 fiscal year.
Clear Lake Water Quality Data 10/01/1975 (PDF, 13.26 MB)Description: The Department of Water Resources conducted a number of studies on Clear Lake from 1968 to 1973 and has collected a large volume of water quality and related data, presented in this report.
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.
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.
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.
Dorris-Butte Valley Water Quality Investigation Office Report 03/01/1968 (PDF, 1.14 MB)Description: In 1964, small amounts of arsenic were detected in various wells in Butte Valley, Siskiyou County. Four wells, utilized by the City of Dorris for their water supply, showed a definite increasing trend in the amount of arsenic from 1964 to 1966. In May 1966, the Water Quality Unit of Northern District initiated an investigation to define the problem and formulate recommendations for a solution.
Wastewater in the Northern District- It's Treatment, Quality and Use Office Report 06/01/1967 (PDF, 3.47 MB)Description: This report contains information on the water quality of 22 Northern District wastewater treatment systems, studied in 1967.
Quality of Ground and Surface Waters in the North Coastal Area Office Report 11/01/1964 (PDF, 7.34 MB)Description: The purpose of this study was to determine the mineral quality of surface and ground waters in the Trinity, Mad-Redwood, and Eel hydrographic units and to identify any significant water quality problems that may affect future development of these units.