The Fox Canyon Groundwater Management Agency (FCGMA) is a public agency charged with the management of groundwater resources in the southwestern portion of Ventura County, California (Figure 1). The FCGMA is an independent special district, separate from the County of Ventura or any city government. It was created in 1982 by the California Legislature through the Fox Canyon Groundwater Management Agency Act for the preservation of groundwater resources in the central and southwestern portion of Ventura County. Groundwater resources within the boundary of the FCGMA account for more than half of the water needs for over 700,000 residents in the cities of Ventura, Oxnard, Port Hueneme, Camarillo, and Moorpark, plus the unincorporated communities of Saticoy, El Rio, Somis, Moorpark Home Acres, Nyeland Acres, Leisure Village, Point Mugu and Montalvo. The FCGMA is funded by fees paid by those who extract groundwater within the Agency boundaries. The fees are used to administer and manage the groundwater resource.