GAMA: Groundwater Ambient Monitoring & Assessment Program

DOCUMENTS

General

• California Specific Portion of the USGS report: Summary of Selected U.S. Geological Survey Data on Domestic Well Water Quality for the Centers for Disease Control’s National Environmental Public Health Tracking Program, Roy C. Bartholomay et al., 2007.

  • Full USGS report

• Impact of Dairy Operations on Groundwater Quality (updated report coming soon)
  
  
• Fate and Transport of Wastewater Indicators: Results from Ambient Groundwater and from Groundwater Directly Influenced by Wastewater
  
  
• Sources and Transport of Nitrate in Groundwater in the Livermore Valley Basin, California
  
  
• Sources and Transport of Nitrate in Shallow Groundwater in the Llagas Basin of Santa Clara County, California
  
  
• Pesticide Contamination Prevention Act - FY 2006/2007 Annual Report to the Legislature State Water Resources Control Board
  
  
• Pesticide Contamination Prevention Act - FY 2005/2006 Annual Report to the Legislature State Water Resources Control Board
  
  
• Pesticide Contamination Prevention Act - FY 2004/2005 Annual Report to the Legislature (State Water Board Section)
  
  
• LLNL - Denitrification in a Shallow Aquifer Underlying a Dairy Farm: New Approaches to Characterization and Modeling (September 2004)
  
  
• USGS GAMA Program Fact Sheet (August 2004)
  
  
• SWRCB's Report to the Governor and Legislature: A Comprehensive Groundwater Quality Monitoring Program for California (March 2003)
  
  
• Framework for a Ground-Water Quality Monitoring and Assessment Program for California - USGS Water Resources Investigation Report 03-4166 (2003)
  
  
• Nitrate Contamination in California Groundwater: An Integrated Approach to Basin Assessment and Resource Protection (December 2002)
  
  
• Domestic Well Project Fact Sheet (SWRCB - January 9, 2002)
  
  
• 2002 CWA Section 305(b) Report
  
  
• AB 599 - Complete Text of Chaptered Bill (April 2001)
  
  
• California's Contaminated Groundwater (Natural Resources Defense Council - April 2001)
  
  
• California Aquifer Susceptibility Assessment Purveyor Participation Sheet (SWRCB -
  March 29, 2001)
  
  
• California Aquifer Susceptibility Assessment (CAS) Information Summary Sheet (SWRCB -
  February 21, 2001)
  
  
• SWRCB Ambient Monitoring Plan (SWRCB - January 2000)

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GAMA Priority Basin Project Publications:

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Central Sierra Study Unit

• Central Sierra

Kern Study Unit

• Kern

North San Francisco Bay Study Unit

• North San Francisco Bay Data Summary Report

North San Joaquin Valley Study Unit

• North San Joaquin Valley Data Summary Report

Salinas/Monterey Study Unit

• Salinas/Monterey Data Summary Report

San Diego Study Unit

• San Diego Study Unit: Data Summary Report

Southern Sierra Study Unit

• Southern Sierra Study Unit: Data Summary Report
  

Southern Sacramento Valley Study Unit

• Southern Sacramento Valley

Central Eastside San Joaquin Valley Study Unit

• Central Eastside
  
  
  

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GAMA Investigation Reports:

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Los Angeles - Orange County Focus Area

• Stable Isotopes and Volatile Organic Compounds Along Seven Ground-Water Flow Paths in Divergent and Convergent Flow Systems, Southern California, 2000

• Low-Level Volatile Organic Compounds in Active Public Supply Wells as Ground-Water
  Tracers in the Los Angeles Physiographic Basin, California, 2000 (USGS - October 2001)

• Groundwater Age Dating from Public Water Supply wells in the Los Angeles Physiographic Basin (LLNL - December 2002)

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Alameda County Focus Area

• A Contamination Vulnerability Assessment for the Livermore-Amador and Niles Cone Groundwater Basins (LLNL - July, 2002)

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Sacramento Focus Area

• A Contamination Vulnerability Assessment for the Sacramento Area Groundwater Basin (March 2004)

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Bakersfield Focus Area

• A Contamination Vulnerability Assessment for the Bakersfield Area (LLNL - November 2004)

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Modesto/Fresno Focus Area

• Assessing the Susceptibility to Contamination of Two Aquifer Systems Used for Public Water Supply in the Modesto and Fresno Metropolitan Areas, California 2001 and 2002 (USGS - 2004)

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North Sacramento Valley/ Volcanics Focus Area

• California GAMA Program: Groundwater Ambient Monitoring and Assessment Results for the Sacramento Valley and Volcanic Provinces of Northern California (LLNL - January 2005)

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Santa Clara Focus Area

• A Contamination Vulnerability Assessment for the Santa Clara and San Mateo County Groundwater Basins

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( updated 7/17/08 )