Kachess Drought Relief Pumping Plant

Kachess DamThe Kachess Drought Relief Pumping Plant (KDRPP) is one of several potential surface-water supply projects being studied by the Bureau of Reclamation and the Washington State Department of Ecology (Ecology) to improve water resources management in the Yakima River basin. KDRPP is being developed under the Yakima River Basin Water Enhancement Project (YRBWEP) as part of the Yakima River Basin Integrated Water Resource Management Plan (Integrated Plan).

Previously referred to as the Kachess Reservoir inactive storage project, the proposed KDRPP could withdraw as much as 200,000 acre-feet of inactive storage water below the reservoir’s outlet works. It would pump and transfer water into the Yakima River for appropriate distribution. KDRPP would operate only during a Washington State-declared drought with the goal of providing, when feasible, not less than 70 percent water rights to proratable users. KDRPP is proposed along with the Keechelus-to-Kachess Conveyance (KKC) project, which would help refill the Kachess Reservoir in the years following a drought in which KDRPP would be used.

Since the proposed KDRPP and KKC projects are closely connected, Reclamation and Ecology prepared the Kachess Drought Relief Pumping Plant and Keechelus Reservoir-to-Kachess Reservoir Conveyance (KKC) Draft Environmental Impact Statement (Draft EIS) as a single document. It includes environmental analyses for both proposed projects.

The Draft EIS was released in January 2015 and presents the no-action alternative and five action alternatives. The action alternatives also include bull trout enhancement for the Yakima River basin. The public involvement and comment period ended June 15, 2015.

Reclamation and Ecology are currently reviewing these comments while also collecting additional scientific data, as necessary, and will reevaluate to affirm or revise the findings in a Supplemental Draft EIS for KDRPP and KKC, which is expected to be completed in late 2016. The release of the Supplemental Draft EIS will be followed by additional public involvement, request for comments, and review period.

The Supplemental Draft EIS will not contain comment letters received on the January 2015 Draft EIS; instead, letters and response to comments from both the Draft EIS and Supplemental EIS will be in a Final EIS.

News Releases
04/2015 Update: Kachess Drought Relief Pumping Plant and Keechelus Reservoir to Kachess Reservoir Conveyance Projects PDF 151 kb
01/09/2015 Draft EIS for Kachess and Keechelus Projects Released HTML

Meetings
11/2013 Kachess Drought Relief Pumping Plant Scoping Meeting HTML

YRBWEP Reports
03/2015 Feasibility Design Draft Report Kachess Drought Relieft Pumping Plant PDF 21.14 mb
01/2015 Keechelus-to-Kachess Conveyance and Kachess Drought Relief Pumping Plant Draft Environmental Impact Statement PDF 34 mb
01/2015 Keechelus-to-Kachess Conveyance and Kachess Drought Relief Pumping Plant Draft Environmental Impact Statement Executive Summary PDF 7.83 mb
03/2014 Scoping Summary Report for the Keechelus-to-Kachess Conveyance and Kachess Drought Relief Pumping Plant Environmental Impact Statement PDF 9.26 mb
10/2013 Kachess Reservoir Inactive Storage Project Alternatives Comparison and Recommendation for Advancement PDF 13.13 mb
04/2013 Yakima River Basin Integrated Water Resource Management Plan Technical Memorandum: Hydrologic Modeling of Winter Streamflows and Kachess Inactive Storage Tunnel Alternative PDF 2.87 mb
09/2010 Yakima River Basin Water Storage Study Kachess Inactive Storage Appendix H - OPCC Lake Kachess Inactive Storage PDF 391 kb
02/1997 YRBWEP Kachess Dam, Kachess Lake Augmentation, Draft Status Report PDF 968 kb
Additional Reference Documents >>

Reference Documents
05/2006 Yakima River Basin Water Storage Alternatives Appraisal Assessment Technical Series No. TS-YSS-8 PDF 6.05 mb
10/1989 Appraisal Assessment of Augmenting Kachess Reservoir Stored Waters by Gravity Feed from Cabin Creek and Silver Creek PDF 10.78 mb
Additional Reference Documents >>

Contact

Wendy Christensen
gchristensen@usbr.gov
(509) 575-5848 x203

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

Thomas Tebb
Thomas.tebb@ecy.wa.gov
(509) 575-3989

Director, Office of Columbia River
State of Washington
Department of Ecology
15 W. Yakima Ave, Ste 200
Yakima, WA 98902-3452


Last Updated: 7/21/16