From Stanford Woods Institute for the Environment:
“Many arid regions face groundwater security and reliability challenges, such as overdraft and climate change-driven precipitation shifts. Increasingly, water managers are considering recharging aquifers using stormwater and recycled water–Managed Aquifer Recharge (MAR). These projects are hindered by a lack of tools to evaluate system design costs and trade-offs. Stanford researchers have developed AquaCharge, a planning tool that can optimize system costs and performance to help water managers make more informed decisions about how MAR can fit into water management strategies. … ”
Read this research brief here: AquaCharge: A Design Tool for Balancing Groundwater Management Trade-Offs
From the Pacific Institute:
“Navigating around puddles that form on streets and in parking lots after a rainstorm can be a nuisance. But this water, technically known as stormwater, has the potential to become an important water supply for many Californian communities. For example, one study showed enough potential supply from stormwater in major urban and suburban centers in California to annually provide millions of gallons for the recharge of local aquifers.
In addition to providing valuable water supply, effective stormwater management can help reduce local flooding and prevent trash and other pollution from getting into streams or the ocean. What’s more, many stormwater capture projects have further co-benefits, such as providing habitat, reducing urban temperatures, reducing energy use, creating community recreation spaces, and increasing property values. … ”
Read more from the Pacific Institute here: The stormwater opportunity
A Guidebook for using California’s Sustainable Groundwater Management Act to protect fisheries
From the Center on Urban Environmental Law at Golden Gate University:
“In California, surface waters have historically been regulated as if they were unconnected to groundwater. Yet, in reality, surface waters and groundwater are often hydrologically connected. Many of the rivers that support fisheries such as salmon and trout are hydrologically dependent on tributary groundwater to maintain instream flow. This means that when there is intensive pumping of tributary groundwater the result can be reductions in instream flow and damage to fisheries.
For this reason, stakeholders concerned about adequate instream flows for fisheries in California’s rivers, streams and creeks need to be effectively engaged in the implementation of California’s Sustainable Groundwater Management Act (SGMA). …
Each SGMA Groundwater Plan must detail how the groundwater basin will be managed to avoid overdraft conditions and, importantly for fisheries, to avoid adverse impacts on hydrologically connected surface waters.
Although groundwater sustainability agencies and fishery stakeholders recognize that the groundwater-surface water connection needs to be addressed in SGMA Groundwater Plans, at present there is limited guidance on how to do this. That is, what are the specific types of information, modeling, monitoring, and pumping provisions that should be included in SGMA Groundwater Plans to ensure that groundwater extraction does not cause significant adverse impacts on fisheries? The purpose of this guidebook is to provide such guidance.”
From Brownstein Hyatt Farber Shreck:
The Sustainable Groundwater Management Act (“SGMA”) is now in its fourth year of operation. Groundwater Sustainability Agencies (“GSAs”) have been formed throughout the medium- and high-priority basins across California, and those GSAs are now developing Groundwater Sustainability Plans (“GSP”). The GSPs will ultimately afford greater long-term groundwater supply reliability by avoiding chronic groundwaer depletion and other “undesirable results,” such as signficant loss of storage, water quality degradation, subsidence, and seawater intrusion.
To achieve sustainable management in basins experiencing pronounced overdraft conditions, either augmented recharge will be necessary or groundwater extractions will need to be reduced over time. This process will affect municipal water suppliers that rely on groundwater basins that are subject to SGMA’s provision. It is, thus, important that municipal water suppliers understand the requirements of SGMA, the potential impacts to their groundwater supplies, and the procedural and substantive options and strategies that should be considered throughout the process.
To that effect, this paper will cover:
1. An overview of SGMA and its essential provisions;
2. The issues that will need to be resolved to implement SGMA, including the potential
division of available water supplies within a basin;
3. A summary of key groundwater rights laws;
4. A discussion of groundwater basin adjudications and new laws designed to streamline future adjudications and harmonize their results with SGMA; and
5. Strategies that municipal water providers may employ to optimize outcomes from the SGMA/adjudication process.
Read the report from Brownstein Hyatt Farber Shreck here: Report: An Assessment of the Sustainable Groundwater Management Act for Municipal Water Suppliers.
From the Environmental Defense Fund:
Two new reports are available to aid Groundwater Sustainability Agencies in preparing and implementing their Groundwater Sustainability Plans to comply with the Sustainable Groundwater Management Act (SGMA):
Groundwater Pumping Allocations under California’s Sustainable Groundwater Management Act: Guidance for Groundwater Sustainability Agencies
This paper, co-authored with New Current Water and Land, addresses one major dilemma facing Groundwater Sustainability Agencies (GSAs): how to comply with SGMA without changing groundwater rights. It starts by providing background on groundwater law and then recommends one approach among four to develop an allocation scheme that is most likely to withstand a court challenge.
Depletion Requirements in California’s Sustainable Groundwater Management Act
In this paper, Environmental Defense Fund proposes an approach for GSAs to address surface water depletions – also known as the “sixth deadly sin” or “Undesirable Result No. 6” – under SGMA.