Groundwater Replenishment

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In recognition of locally dropping water levels, and the cost-effectiveness of underground water storage, implementers in the Walla Walla Basin have worked to pilot and develop operational groundwater replenishment projects with the objective of storing water in underlying aquifers during periods of higher water availability for later withdrawal or for the public benefit of "aquifer recharge".

Current information on projects underway is available here:

Link to WWBWC website

Initial work in the investigation of this concept in the State of Washington is available below:

	Hall Wentland Pilot Project Report	The following report shows the results of the 2006-7 Aquifer Recharge season for the Hall-Wentland SAR testing site in Oregon, focusing primarily on describing work activities, data collected, and preliminary observations and interpretations. Results of the Second Season of SAR Testing at the Hall-Wentland Site Long-Term Implementation Strategy for the Hall-Wentland Site
	Locher Pit Pilot Project Report	The following reports show the results of the 2006-7 Aquifer Recharge season for the Locher Pit SAR testing site in Washington, focusing primarily on describing work activities, data collected, and preliminary observations and interpretations. Results of the First Season of SAR Testing at the Locher Road Site (For further questions on this report, contact the Gardena Farms Irrigation District)
	City of Walla Walla Pilot Project Report	The following report shows the results of the 2006-7 Aquifer Recharge season for the City of Walla Walla SAR testing site in Washington. This report is final and no future testing is planned at this location. Results of the First Season of SAR Testing at the City of Walla Walla Site (For further questions on this report, contact the City of Walla Walla Public Works Department) City of Walla Walla SAR Monitoring and Testing Plan

	Final 2006 Washington Pilot Project Reports	This report summarizes the results of the first season of SAR testing at the Hall-Wentland Test Site, focusing primarily on describing work activities, data collected, and preliminary observations and interpretations. Results of the 2005-6 Season of Shallow Aquifer Recharge Testing Memo Locher Road Project Activities
	Strategic Plan for SAR in the Walla Walla Basin	This Strategic Plan is intended to identify, enable and inform adaptive actions that water stewards can take to improve the flow of water into, through and out of the shallow gravel aquifer. Recommended actions include monitoring and evaluation, goal setting, and design, permitting, funding and implementation of aquifer recharge systems. Strategic Plan for SAR
	Hall-Wentland and Locher Pit Monitoring and Test Plans	These documents represent the SAR monitoring and test plans for the two sites considered under this program. Hall-Wentland SAR Monitoring and Testing Plan Locher Road SAR Monitoring and Testing Plan