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Amanda Gateley successfully defends her undergraduate thesis!

5/15/2020

 
​Thesis Title: Evaluating Future Groundwater Sustainability in Kern County, California under SGMA Regulations Using MODFLOW
California’s Central Valley is a large sediment-filled valley that trends northwest to southeast, surrounded by the Coast Ranges to the west and the Sierra Nevada to the east (Faunt et al., 2009). These two mountain ranges contribute alluvial deposits to the valley’s aquifer system. Droughts and groundwater overdrafts in California prompted government intervention at the state level, resulting in the passage of the Sustainable Groundwater Management Act (SGMA). In compliance with SGMA, local Groundwater Sustainability Agencies (GSAs) were prompted to outline their Groundwater Sustainability Plans (GSPs) with the goal of maintaining or achieving sustainable groundwater levels by 2040.
Kern County is one of 21 critically overdrafted basins, where groundwater pumping has become unsustainable. Agriculture in Kern County is significantly dependent on groundwater extraction. In order to discern whether a GSA’s sustainability plan can be realistically achieved within 20 years, a simplified hypothetical groundwater model was developed using the ModelMuse and MODFLOW hydrologic modeling software. This model’s domain encompassed two GSAs: the Buena Vista Water Storage District and the Semitropic Water Storage District. Pumping wells were placed in the Buena Vista GSA to pump groundwater at different rates over different time frames to determine if long-term pumping rates are sustainable.​


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Weingarten Lab
Department of Geological Sciences

​San Diego State University
5500 Campanile Drive
MC-1020
San Diego, California
​92182-1020

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