Four photo collage; starting upper left hand corner going clock wise: Pipe valve, Ariel view of Owens Lake with snow capped mountains in back, Sprinkler Heads on concrete bases, grass field with fence.

A component of the Owens Lake Master Project, the objective of the Owens Lake Groundwater Development Program (OLGDP) is to utilize groundwater from beneath Owens Lake to provide a portion of water demand for dust mitigation on Owens Lake in an environmentally sustainable manner.

To better understand the Owens Lake geohydrology, LADWP is utilizing an Adaptive Management Strategy for the development of groundwater at Owens Lake to ensure groundwater dependent resources are protected.

The plan is to implement OLGDP in three (3) Phases:

  • Phase I is to develop a baseline which includes conducting a variety of studies to update the current conceptual model of Owens Lake groundwater system. Based on the studies conducted, a management plan is developed, and Hydrologic Monitoring, Management, and Mitigation Plan (HMMMP) is prepared. The HMMMP will support preparation of environmental documentation and in acquiring necessary leases and permits.
  • Phase II is the start of groundwater pumping at a rate lower than what is determined to be sustainable while leaning more on the groundwater system and the effect of resources around the lake, and
  • Phase III is full implementation of the groundwater pumping to supply a portion of water needed for dust mitigation at Owens Lake.
OLGDP Phases: Phase I, Baseline data collection, Environmental Studies, Permitting; Phase II, Implementation, Install Few Production Wells Limited Pumping, Evaluation; Phase III, Implementation, Install Additional Production Wells, Periodic Evaluation
Implementation phases of OLGDP

OLGDP commenced in 2014 based on the results from the Owens Lake Groundwater Evaluation Project (OLGEP), which was conducted from 2009 to 2012.


OLGDP Information

Efforts completed since 2012

Efforts to better characterize the subsurface geology and hydrogeology of Owens Lake have included the installation of 14 alluvial monitoring wells in 2013, 27 piezometers in 2015, two testing wells, five monitoring wells, and seven piezometers in 2018 and 2019, and a pumping test plan for aquifer characterization.

Work is ongoing to collect data for improvement and calibration of the computer model and development of a Hydrologic Monitoring, Management, and Mitigation Plan (HMMMP) to ensure local groundwater dependent resources are protected as the project progresses.

2013 Alluvial Monitoring Wells Report

2015 Piezometer Installation Report

2019 Pumping Test Plan

2019 Short-Term Pumping Test Report (Draft)

2020 Baseline Groundwater Quality at Owens Lake

Owen Lake Groundwater Model Update Documentation - June 2020

2024 OLGDP Program Summary

Operational Test of Testing Well TW-E at Owens Lake

Invitation to Review the Revised Testing Plan

Revised Testing Plan - May 2020

Inyo County Water Department Comments and Responses

Great Basin Unified Air Pollution Control District Comments and Responses 

California State Lands Commission Comments and Responses 

Big Pine Paiute Tribe Comments and Responses

Updated Testing Plan - February 2021

Updated Testing Plan Appendices

CEQA Documentation - Initial Study and Draft Negative Declaration

Groundwater Monitoring at Owens Lake

Groundwater Gradient Monitoring at Springs and Seeps - September 2021

Groundwater Monitoring in Cluster Wells - September 2021

Cross Section of Groundwater Levels in Cluster Monitoring Wells - September 2021

Groundwater Monitoring at Vegetated Dune Areas - September 2021

Horizontal Groundwater Gradient Monitoring - September 2021

Consolidated Hydrologic Monitoring at Owens Lake

Description of the State Lands Commission Lease

Quarterly Report - September 2024

Informational Miniseries

Protection of Non-LADWP Wells

Protection Against Land Subsidence

Groundwater Working Group Meetings

October 24, 2019

Meeting Summary

Owens Lake GWG Summary 10-24-2019

Supporting Material

Update on 24-hour Pumping Tests of Testing Wells TW-East and TW-West

Owens Lake Groundwater Model Update

Resource Protection Protocol for Vegetated Dune Areas

Water Banking Concept

Sustainable Groundwater Management Act (SGMA) and OLGDP

February 4, 2021

Meeting Agenda

Owens Lake GWG Meeting Agenda 02-04-2021

Meeting Summary

Owens Lake GWG Summary 02-04-2021

Supporting Material

Activities Since Last Meeting

Six-Month Operational Test of Testing Well TW-E at Owens Lake

Vegetated Dune Areas

Hydrogeologic Conceptual and Numerical Models of Owens Lake

SGMA Update

OLGEP Information

LADWP, in cooperation with Inyo County Water Department (ICWD) and Great Basin Unified Air Pollution Control District (GBUAPCD), conducted a study of the groundwater under Owens Lake to evaluate feasibility of utilizing groundwater to supply part of the water demand for the dust mitigation program on Owens Lake. The study commenced in March 2009 and was completed in November 2012. The consulting firm on this project was MWH Americas, Inc.

Please click below to view the Final Report along with main appendices for the Owens Lake Groundwater Evaluation Project (OLGEP).

Hard copies of the final report are available at Inyo County Free Library branches located in Bishop, CA and Independence, CA.

Final Report on the OLGEP

Updated Conceptual Model Report

Updated Conceptual Model Report Appendices

Groundwater Model Documentation

Groundwater Model Documentation Attachments

Protocols and Recommendations

Evaluation of Geophysical Data, Phase II

Owens Lake Isotope Analysis Report

Simulation of the Potential Alternative