Water Quality Studies

• Organochlorine Pesticides and Polychlorinated Biphenyls (PCB) Concentrations in Muscle Tissue of Fish Collected from the San Joaquin River and Sacramento River Watersheds and Delta During 2005
  Results of the Lower Sacramento River Surface Water Ambient Monitoring Program (SWAMP).
• Endocrine Disrupting Chemical Assay Results - Lower Sacramento River Surface Water Ambient Monitoring Program Fact Sheet
  Results of the Lower Sacramento River Surface Water Ambient Monitoring Program (SWAMP).
• Screening California Surface Waters for Estrogenic Endocrine Disrupting Chemicals (EEDC) with a Juvenile Rainbow Trout Liver Vitellogenin mRNA Procedure
  Results of the Lower Sacramento River Surface Water Ambient Monitoring Program (SWAMP).
• A Summary of the 2004 TMDL Monitoring for Selected Pesticides in the Sacramento-San Joaquin Delta, January-February 2004
  
• A Summary of the 2004 TMDL Monitoring for Selected Pesticides in the Sacramento-San Joaquin Delta, California, March-April 2004
  
• Results for the 2005 TMDL Monitoring for Diazinon and Chlorpyrifos in California's Central Valley Waterways, January – February 2005
  
• A Summary of the 2005 TMDL Monitoring for Selected Pesticides in the Sacramento-San Joaquin Delta, California, March-May 2005
  
• Acute Toxicity of Sacramento Area Urban Creeks to Ceriodaphnia dubia
  Results of the Lower Sacramento River Surface Water Ambient Monitoring Program (SWAMP). Sacramento area urban creeks tested for acute toxicity to Ceriodaphnia dubia.
• Acute Toxicity of American River and Tributary Waters to Ceriodphnia dubia and Fathead Minnows
  Results of the Lower Sacramento River Surface Water Ambient Monitoring Program (SWAMP). American River watershed tested for acute toxicity to Ceriodaphnia dubia and Fathead Minnows.
• Sacramento, Delta and San Joaquin River Basins Organophosphorus Pesticides TMDL Monitoring Quality Assurance Project Plan for 2005
  The QAPP was written for the Pesticide TMDL Unit’s sampling plan for 2005. The plans include organophosphate pesticide monitoring in the Sacramento and San Joaquin River Basin, and Sacramento-San Joaquin Delta.
• Opportunity for Public Review of Draft Water Quality Report: Sediment Toxicity Testing in the San Joaquin River Basin, October 2001 through September 2005.
  The objectives of this sediment toxicity project were to determine if sediment toxicity was evident in the San Joaquin RIver Basin; identify areas with persistent sediment toxicity; and attempt to identify the causes of identified toxicity. Sediment samples were collected from October 2001 through September 2005 and analyzed for sediment toxicity, specific pesticides, and/or submitted for Toxicity Identification Evaluations (TIEs). Comments due by 21 August 2007.
• Cover Letter
• Draft Report
• Cover, Executive Summary, Table of Contents
• Sediment Report Main Body
• Appendices
• TMDL Monitoring Plan for Selected Pesticides in the Sacramento and San Joaquin River Basins and the Sacramento-San Joaquin Delta During Irrigation Season 2007
  Describes the TMDL Monitoring Plan for Pesticides in 2007.
• Surface Water Ambient Monitoring Program (SWAMP)
• Regional Reports and Documents (on the State Water Board web site)
• Results of the 2006 TMDL Monitoring of Selected Pesticides During Irrigation Season in California’s Central Valley Waterways, March – August 2006
  Describes the pesticide TMDL monitoring in the Central Valley during the 2006 irrigation season.
• Data Results in MS Excel format
• Results of the 2006 TMDL Monitoring of Pesticides in California’s Central Valley Waterways January - March 2006
  Describes the pesticide TMDL monitoring in the Central Valley for the 2006 storm season. For ease of use, MS Excel format data are also available.
• Data Results in MS Excel format
• Monitoring of Sediment-bound Contaminants in the Lower Sacramento River Watershed, April 2003
  Results of the Lower Sacramento River Surface Water Ambient Monitoring Program (SWAMP). Sediment samples were analyzed for metals, polycyclic aromatic hydrocarbons (PAHs), organochlorine pesticides (OCs), pyrethroid pesticides, and organophosphate pesticides (OPs).
• Survey of Zooplankton Community Structure and Abundance in Agriculture-dominated Waterways in the Lower Sacramento River Watershed
  Results of the Lower Sacramento River Surface Water Ambient Monitoring Program (SWAMP). A preliminary survey of zooplankton abundance and diversity in agriculture-dominated waterways in the Lower Sacramento River Watershed, including assessment of zooplankton temporal variation over a relatively short time-frame and potential association with environmental variables during the agricultural irrigation season, August and September 2004.
• Aquatic Toxicity Due to Residential Use of Pyrethroid Insecticides
  Results of the Lower Sacramento River Surface Water Ambient Monitoring Program (SWAMP). Abstract available and full citation. Sediment toxicity testing, sediment chemistry analyses, and bioassessment used to examine water quality impacts of urban usage of pyrethroid insecticides.
• Benthic Macroinvertebrate Colonization of Artificial Substrates in Agriculture-dominated Waterways of the Lower Sacramento River
  This report presents the results of the Lower Sacramento River Surface Water Ambient Monitoring Program (SWAMP). Bioassessment approaches used in concert with analytical chemistry and toxicity testing to examine environmental stressors associated with storm water runoff in agriculture-dominated waterways.
• Benthic Macroinvertebrate Bioassessment of San Joaquin River Tributaries: Spring and Fall 2002
  Results for Total Maximum Daily Load, bioassessment sampling in the San Joaquin River Watershed, Spring and Fall 2002.
• Central Valley Pesticide Monitoring Quality Assurance Project Plan (QAPP) & Monitoring Plan (MP) 2006
  The QAPP and MP were written for the Pesticide TMDL Unit's sampling plan for 2006. The plans include storm, irrigation, and TMDL compliance monitoring.
• Macroinvertebrate Assemblages in Agriculture- and Effluent-dominated Waterways of the Lower Sacramento River Watershed (Water Year 2000-2002)
  This report presents the results of the Lower Sacramento River Surface Water Ambient Monitoring Program (SWAMP), bioassessment of agriculture- and effluent-dominated waterways.
• Grassland Watershed (Water Year 1998)
  Agricultural Drainage Contribution to Water Quality in the Grassland Watershed of Western Merced County, California: October 1997 - September 1998, Agricultural Regulatory and Planning Unit.
• Grassland Watershed (Water Years 1999 & 2000)
  Agricultural Drainage Contribution to Water Quality in the Grassland Watershed of Western Merced County, California: October 1998 - September 2000. San Joaquin River Watershed Unit. April 2002.
• Impaired Water Bodies 303(d) List and Total Maximum Daily Loads (TMDLs)
• Lower San Joaquin River (Water Year 1998)
  Water Quality of the Lower San Joaquin River; Lander Avenue to Vernalis: October 1997 - September 1998. Agricultural Regulatory and Planning Unit. May 2000.
• Lower San Joaquin River (Water Years 1999 & 2000)
  Water Quality of the Lower San Joaquin River; Lander Avenue to Vernalis: October 1998 - September 2000. San Joaquin River Watershed Unit. April 2002.
• Macroinvertebrate Assemblages of the San Joaquin River Watershed, (2001)
  Results for the Surface Water Ambient Monitoring Program, bioassessment sampling in the San Joaquin River Watershed, June and September-October, 2001.
• Sacramento Urban Rain and Creek Monitoring 2001-2003
  This report presents the results of pesticides monitoring in Sacramento metropolitan area rainwater and creeks during the 2001, 2002 and 2003 orchard dormant spray seasons.
• Sacramento Urban Rain Monitoring Report 2004
  Results of pesticides monitoring in Sacramento metropolitan area rainwater during the 2004 orchard dormant spray season.
• Sacramento Urban Rain Quality Assurance Project Plan (QAPP) 2005
  This QAPP was written for the 2005 orchard dormant spray season rain water monitoring and includes data from Sacramento Stormwater Permittees rain water collection effort.
• 2004 Sacramento Valley Diazinon Monitoring Report
  This report presents a brief summary of the 2004 TMDL monitoring for diazinon in California’s Sacramento Valley waterways January-March 2004.
• Sacramento and San Joaquin Delta
  This report presents the results of pesticides monitoring conducted in the Sacramento and San Joaquin Delta during 2002 and 2003.
• San Joaquin River
• San Joaquin River Real-time Program
  Regional Board staff is participating in a two year program to monitor and model real time discharge and salinity in the San Joaquin River. The above link is to a web page maintained by the Department of Water Resources, San Joaquin District. This web page includes a description of the program, site descriptions and reports, and weekly real time forecasts.
• Salinity & Boron Basin Plan Amendment for the San Joaquin River at Vernalis
• Salinity & Boron Basin Plan Amendment for the San Joaquin River Upstream of Vernalis
• Selenium in Wetland Water Supply Channels (Water Year 1998)
  Review of Selenium Concentrations in Wetland Water Supply Channels in the Grassland Watershed, Agricultural Regulatory and Planning Unit. May 2000.
• Selenium in Wetland Water Supply Channels (Water Years 1999 & 2000)
  Review of Selenium Concentrations in Wetland Water Supply Channels in the Grassland Watershed. San Joaquin River Watershed Unit. April 2002.
• Ten Year Load Report
  Loads of Salt, Boron, and Selenium in the Grassland Watershed and Lower San Joaquin River, October 1985 to September 1995, Raw Data Supplemental Appendix, Agricultural Regulatory and Planning Unit.