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/