Texas Watch- Volunteer Environmental Monitoring Program.
http://www.texaswatch.geo.swt.edu

Edwards Aquifer Research & Data Center.
http://www.eardc.swt.edu/EARDC-info.html

San Marcos Weather Link
http://www.weather.com/weather/radar/single_site/TX_San_Marcos.html#TOP

Environmental Protection Agency-Surfing Your Watershed
http://www.epa.gov/surf2/

Environmental Protection Agency-Volunteer Monitoring Information
http://www.epa.gov/OWOW/monitoring/vol.html

The following three sites relate to the known endangered species for the San Marcos area:

Texas Parks and Wildlife- Texas Wild Rice
http://www.tpwd.state.tx.us/nature/endang/twildric.htm

Texas Parks and Wildlife- Fountain Darter
http://www.tpwd.state.tx.us/nature/endang/fdarter.htm

Texas Parks and Wildlife- Salamander
http://www.tpwd.state.tx.us/nature/endang/salamsm.htm