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Using Net Groundwater Extractions For Farm Level Groundwater Sustainability Monitoring, Daniel J. Howes, Morgan Whinery, Eric Limas, Dan Vink
Using Net Groundwater Extractions For Farm Level Groundwater Sustainability Monitoring, Daniel J. Howes, Morgan Whinery, Eric Limas, Dan Vink
BioResource and Agricultural Engineering
The Cal Poly Irrigation Training and Research Center (ITRC) has developed a method for computing net groundwater extraction and recharge at the farm level for district management and regulation of sustainable/safe yields. This method is called Net To/From Groundwater (NTFGW). Net groundwater extraction is preferred for assessing sustainable yield in unconfined aquifer systems over direct metering of gross groundwater pumping. A recent pilot project with the Lower Tule River and Pixley Irrigation Districts’ Groundwater Sustainability Agencies (GSAs) compared actual metered groundwater pumping, surface deliveries, and evapotranspiration to the NTFGW outputs on 19 farms within the GSAs over a 3-year period …