CERES - Contra Costa County
An index to environmental information for the county. Extensive reference includes road, weather, and flood conditions, demographics, historical resources, maps.
Contra Costa Environmental Health Department
Programs and services include waste management, water quality protection, food safety monitoring, land use planning and vector control.
Friends of Pinole Creek Watershed
Volunteer organization focuses on improving environmental quality in the area around the creek. Includes details on current projects.