Odessa Subarea Special Study

The Odessa Subarea Special Study is investigating the continued phased development of the Columbia Basin Project to deliver surface water from the CBP to lands currently using groundwater in the Odessa Subarea. The aquifer in the Odessa Subarea is declining to such an extent, the ability of farmers to irrigate their crops is at risk. Domestic, commercial, municipal and industrial uses, and water quality are also affected. In response to the declining aquifer and associated socioeconomic effects, Congress authorized funding for Bureau of Reclamation to investigate the problem. The State of Washington, represented by the Washington Department of Ecology, and Reclamation are co-leads and cost-share partners for the study.

The final environmental impact statement was issued on Aug. 31, 2012, in compliance with the National Environmental Policy Act and State Environmental Policy Act requirements. The record of decision was signed on April 2, 2013, and the amended ROD was signed on Sept. 27, 2013.

More information about the study >>

Final Environmental Impact Statement & Related Documents >>

Odessa Ground Water Replacement Program >>

09/2013 AMENDED Record of Decision for the Odessa Subarea Special Study Final Environmental Impact Statement PDF 2.38 mb
02/2013 Record of Decision for the Odessa Subarea Special Study Final Environmental Impact Statement PDF 583 kb
01/2013 Endangered Species Act Biological Opinion and Magnuson-Stevens Fishery Conservation and Management Act Essential Fish Habitat Consultation Prepared by National Marine Fisheries Service Regarding Bureau of Reclamation's Odessa Subarea Modified Partial Groundwater Replacement Project on the Columbia River in Adams, Lincoln, Franklin and Grant Counties, Washington PDF 4.45 mb
10/2012 Biological Assessment of Effects to Species & Critical Habitat for 13 Anadromous Salmon ESUs, Pacific Eulachon, Green Sturgeon, & Killer Whales in the Columbia Basin from Implementation of the Modified Partial Groundwater Irrigation Replacement Alternative (Alternative 4A) PDF 7.74 mb
08/2012 Odessa Subarea Special Study Final EIS Vol 1 PDF 31.81 mb
08/2012 Odessa Subarea Special Study Final EIS Vol 2 PDF 37.45 mb
08/2012 Final Feasibility-Level Engineering Report
This document does not include the drawings. If you would like a CD of the drawings please email odessa@usbr.gov PDF 5.63 mb
10/2010 Draft Environmental Impact Statement & Related Documents HTML
11/2008 Scoping Summary Report PDF 4.1 mb
04/2008 Appraisal-Level Investigation Summary of Findings PDF 10.72 mb
09/2006 Initial Alternative Development & Evaluation PDF 1.9 mb
02/2006 Plan of Study PDF 883 kb


Jennifer Hickenbottom

Bureau of Reclamation
Columbia-Cascades Area Office
1917 Marsh Road
Yakima, WA 98901-2058

Last Updated: 1/27/23