Farmington Groundwater Recharge Program - Provides extensive technical information about effort to replenish the Eastern San Joaquin County Groundwater Basin and stop saline intrusion to the region's primary water supply. - http://www.farmingtonprogram.org/
CERES - San Joaquin County - An index to environmental information for the county. Extensive reference includes road, weather, and flood conditions, demographics, historical resources, maps. - http://ceres.ca.gov/geo_area/counties/San_Joaquin/