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Feasibility of Shallow Aquifer Recharge - Groundwater Replenishment
Home > Other Efforts > Pilots > SAR


Overview

The shallow gravel aquifer is a groundwater body that underlies most of the floor of the Walla Walla valley and extends up several of the primary stream corridors into the Blue Mountain foothills. The shallow gravel aquifer is generally an unconfined surface aquifer that is hydraulically connected to most of the streams that flow across the floor of the Walla Walla watershed. Anthropogenic influences have modified the recharge of this system and are the propable culprit for observed changes to the system.

In response to indicators of change in the shallow aquifer, planning efforts to address the change as well as pilot projects to test methods for recharging the aquifer have been ongoing since 2004. Documents produced as part of this effort are available below. If you have further questions please contact the Watershed Planning Department.


2006-2007 Documents
Final Report
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.
Final Report
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.
Final Report
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.
Original Pilot Documents
Final Report 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.
Strategic Plan 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.
Test Plans 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.


A similar project entitled "HBDIC Aquifer/Spring Recharge & Restoration" is also occuring in the basin (External Link).