Maria Gibson and I published this brief 4-page article in the current (January-February 2022) issue of Water Resources IMPACT (volume 24, no. 1). (Click here to download the entire issue):
Download Water Resources IMPACT January:February 2022
This article is based upon Maria's PhD dissertation so if you have any questions, contact her (the groundwatergeek herself!) - she can be reached at [email protected]
Here is the introduction to the article:
Introduction
Benjamin Franklin wrote in 1746, “When the well's dry, we know the worth of water.” This holds true today, with the caveat that the value of water is tied to the timing of demand. Historically we met demand with surface reservoirs. Today, when droughts hit our communities hard we want immediate solutions, and we want more dams. However, this year we have observed reservoir conditions which signal warning signs of the future. We saw lakes drained to winding creeks. We saw exposed sandbars not visible since dam construction. We saw the unmistaken dead brown landscape - no water in sight - surrounded by the green of former shorelines which existed just a brief time ago..
Signs along Interstate 5 in California. Photo: Maria Gibson (2019)
Dams alone no longer provide the reliability to meet our water needs.
Managed aquifer recharge (MAR) holds significant potential for providing available water to match demand. It stores water in a natural environment when flows are high, and demand is low. By placing water in aquifers for future use, MAR eliminates many of the environmental impacts associated with reservoirs. However, MAR projects must meet three requirements – a suitable location, appropriate aquifer conditions, and available water for recharge. These three requirements involve meeting multi-faceted criteria established by project participants with diverse backgrounds.
Lake Oroville, CA. Top: June 2020, Bottom: October 2021.
Success of MAR projects often hinge on collaboration between participants, public perception, and public opinion. When conflict amongst participants or the public arise, projects falter. We experienced a ban on aquifer storage and recovery in the state of Georgia due to a perceived ‘water grab.’ We saw projects fail due to the public’s fear of groundwater contamination, lack of regard for public social views, governance which lacks the oversight of property rights, and a disregard for the public’s connection to the land. Given historical lessons, the three MAR requirements necessitate the prerequisite of inclusion. Analyzing aquifer conditions is highly quantitative but identifying suitable locations for MAR and determining available water for recharge embodies many qualitative elements. To prevent conflict and encourage collaboration, methods exist that include qualitative variables analyzed with scientific rigor. A multi-criteria decision analysis (MCDA) is one such method which mathematically assimilates the nuances of preference, including physical limitations, and incorporates a process of elimination. Other methods include dynamic modelling which incorporates the construction of proactive management models adaptable to different scenarios and supported through feedback loops.
The inherent nature of managed aquifer recharge is multidisciplinary. Participants in project development have a wide range of expertise and backgrounds.
You can also see a more detailed MAR publication here:
Download Yakima_Report20190611-104198-ihyr1f-with-cover-page-v2
Enjoy!
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