Reports & Planning Documents

As part of our commitment to transparency, we make it easy for residents of the Tri-Valley to access information about our water. This includes all required reports to meet state and federal guidelines, and additional reports, data, study results, presentations and other documents we make available for complete transparency.

This is your water agency. If you don’t see a document you are looking for, please feel free to submit a public records request to our Executive Assistant Donna Fabian.

Agencywide Annual Reports

• Fiscal Year 2022-2023 Annual Report
• Fiscal Year 2021-2022 Annual Report
• Fiscal Year 2020-2021 Annual Report
• Fiscal Year 2019-2020 Annual Report
• 2018 Annual Report
• 2017 Annual Report
• 2016 Annual Report
• 2015 Annual Report - Corrected
• 2014 Annual Report
• 2013 Annual Report
• 2012 Annual Report
• 2011 Annual Report
• 2010 Annual Report
• 2009 Annual Report
• 2008 Annual Report
• 2007 Annual Report

Water Supply/Reliability

• 2022 Water Supply Evaluation Update
• Water Storage & Conveyance 101
• Joint Tri-Valley Potable Reuse Technical Feasibility Study - Final (May 2018)
• Lake Del Valle - Reservoir Water Supply Storage Expansion Concept (2018)
• 2019 Water Supply Evaluation Update
• Water Supply Evaluation Update (Feb. 2016)
  • Executive Summary only
• 2011 Water Supply Evaluation
  • Appendices a-d
  • Appendices e-h
• 2020 Urban Water Management Plan - Main Report with Appendices A-H
  • Water Shortage Contingency Plan (Appendix G of the 2020 UWMP)

  • Addendum to 2015 UWMP: Reduced Reliance

• 2015 Urban Water Management Plan
  • Addendum to 2015 UWMP: Reduced Reliance
• 2010 Urban Water Management Plan
• Sustainable Water Supply Annual Review (2016)
• Delta Water Supply Reliability Study - Final Report (May 2009)  (May 2009) 
• Well Master Plan
• Chain of Lakes Project - A Case Study (1.2 Mb)
• Non-Potable Water System Conceptual Master Plan 
• Non-Potable Water System Conceptual Master Plan - Supplemental Report
• Global Climate Change & Its Potential Impact on Zone 7's Water Supply Reliability
• 2020 Tri-Valley Municipal and Industrial Water Demand Study

Groundwater (Livermore Valley Groundwater Basin)

Groundwater management plans

• 2021 Update to the Alternative Groundwater Sustainability Plan for the Livermore Valley Groundwater Basin (December 2021)
• Alternative Groundwater Sustainability Plan (December 2016, Initial Version)
• Nutrient Management Plan(July 2015)
• Groundwater Management Plan (September 2005)
  • Groundwater Management Plan Other documentation (September 2005)
• Salt Management Plan (May 2004)

Groundwater Annual Reports

• Annual Report for the Sustainable Groundwater Management Program 2023 Water Year (October 2022 - September 2023)
• Annual Report for the Sustainable Groundwater Management Program 2022 Water Year (October 2021 - September 2022)
• Annual Report for the Sustainable Groundwater Management Program 2021 Water Year (October 2020 - September 2021)
• Annual Report for the Sustainable Groundwater Management Program 2020 Water Year (October 2019 - September 2020)
• Annual Report for the Sustainable Groundwater Management Program 2019 Water Year (October 2018 - September 2019)
• Annual Report for the Sustainable Groundwater Management Program 2018 Water Year (October 2017 – September 2018)

Other Groundwater Documents

• Livermore's November 2022 Measure P and Groundwater Quality
• Analysis of PFAS Mobilization Under Various Pumping Scenarios
• Sustainable Groundwater Management (SGM) Grant Agreement (May 2020)
• Ordinance Supporting Sustainable Groundwater Management (Ordinance No. 2017-01)
• Groundwater Model for Groundwater and Salt Management in the Livermore Valley Groundwater Basin (April 2017)
  • Upgrades, Calibration, and Application
  • Appendices
• Resolution to Become the Groundwater Sustainability Agency for the Livermore Valley Groundwater Basin (December 2016)
• Hydrostratigraphic Investigation of the Aquifer Recharge Potential for Lakes C & D of the Chain of Lakes (May 2011, for appendices, click here)
• Well Master Plan (Draft Report, October 2003)

Miscellaneous Studies & Reports

• Ground Movement Study, Livermore Valley
  • Report (June 2015)
  • Presentation (Aug. 5, 2015)
• Summary of Recent, Historical and Estimated Potential for Future Land Subsidence in California (State Dept. of Water Resources, 2014)

Water Quality/Treatment

• Annual Consumer Confidence Report
• Assessment of the Current Corrosion-Control Practices at Zone 7's Water Treatment Plants
• Source Water Assessment Reports
• Bench-Scale Evaluation of the Potential Destruction of Cyanotoxins with Treatment Technologies Applied to SBA Water
• Annual Water Quality Management Program Report Card
  • 2020
  • 2018
• Evaluation of Ozone/Peroxone for Water Quality Enhancement
• Salt Management Plan (May 2004)

Flood Protection

• Flood Protection Program Annual Report
• Development Impact Fee for Flood Protection and Storm Water Drainage Report

• Green Stormwater Infrastructure Planning-level Analysis for Livermore-Amador Valley

Integrated Planning

• Final Hazard Mitigation Plan – October 2024
• Preliminary Lake Use Evaluation for the Chain of Lakes
• Preliminary Lake Use Evaluation for the Chain of Lakes, Addendum 1 - 2020 Update
• SMMP brochure

Watershed Stewardship

• Draft Steelhead Habitat Assessment
• Draft Steelhead Assessment Summary
• Draft Steelhead Assessment Reach 4 and Reach 7 Summary
• Draft Amphibian and Riparian Habitat Assessment
• Grazing Management and Watershed Protection Plan for the Lake Del Valle Property

Financial Documents

• Agency Budget
• Independent Auditor’s Report/Annual Financial Statement (fiscal years ending 6/30/08 through 6/30/14)
• Annual Comprehensive Financial Reports (starting with fiscal year ending 6/30/15)
• Municipal & Industrial Connection Fee Program -- 2011 Update
• Final Fiscal Year 2016/17 Municipal & Industrial Connection Fee Program Update

Infrastructure Planning Documents

• Capital Improvement Program
• Asset Management Plan