GIS Data Availability

Base Data Dataset (Vector)	A list of vector GIS data available from SARA.
Base Data Dataset (Raster)	A list of raster GIS data such as aerial photos available from SARA.

External GIS Data Links

Local

Alamo Area Coucil of Governments
City of San Antonio - GIS Mapping Application

State

Guadalupe-Blanco River Authority
Texas Commission on Environmental Quality
Texas Natural Resources Information System
Texas Department of Transportation
Texas Environmental Center
Texas General Land Office
Texas Parks and Wildlife
Texas Water Development Board
Texas Water Foundation
The Edwards Aquifer Authority

National

EPA Local Drinking Water Information Texas Drinking Water
EPA Surf Your Watershed Upper San Antonio Watershed -- 12100301
Federal Railroad Administration
FGDC Metadata
Geography Network - Data
NOAA
NOAA Archive of River Forecast Center Operational NEXRAD Data
National Park Service Geographic Information Systems Data and Information
Natural Resources Conservation Service (NRCS) GIS Data
U.S.Census Bureau - TIGER-Line®
USGS Texas
USGS Elevation Derivatives for National Applications (EDNA)
USGS EROS Data Center, Sioux Falls, SD
USGS National Hydrography Dataset Home Page
USGS Real-Time Data for Texas Streamflow
USGS Seamless Data Distribution System-Enhanced