Search Portals
"Numerous data holdings available
for free download" from
The GeoCommunity™
Many downloadable data layers are available online.
Stanford University's webpage for digital GIS data.
National &
International GIS data
From the University of Arkansas libraries, a country list of GIS data sources.
GeoData.gov
U.S. Maps and Data
"Your one stop for Federal, state, and local geographic
data." Includes feature topics (i.e., Fire Mapping) and a map viewer.
National Spatial Data Clearinghouse
Searchable collection of over 250 spatial data servers, that have
digital geographic data primarily for use in Geographic Information Systems.
USGS Earth Resources Observation & Science (EROS)
"A leading source of land information for
exploring our changing planet."
GIS Data
Finder
From UNC Chapel Hill, "a large collection of
data sets, each of which is made up of potentially many individual
data layers. The GIS Data Finder allows our patrons to browse our collection
in several ways."
Local/State Data & Downloads
CommunityInfo for Education
Compiles SF3 Census variables into single nationwide
layers down to the blockgroup level. Variables include demographics such as
school enrollment, educational attainment,
citizenship, language spoken at home, industry, occupation, and journey to work,
housing units, house value. Basic demographics include total population, age,
and race.
(CDs stored in the Government Documents CD-Rom
cabinet--ask librarian for assistance.) Bexar Co. data available on network
repository. National Data available on DVD (email jdonald@trinity.edu).
Bexar County Parcel
Data
From the
Bexar
County Appraisal District, 2006 parcel data for the county, along with
additional attribute fields. Available on network repository.
Government Document CD-ROMs
An online guide to Trinity Coates Library's collection of Government CD-ROMs on topics
such as health statistics, the U.S. Census, crime, education, and the U.S.G.S.
State & National, and International download sites
Texas Map and Data Files
From the Texas General Land Office, a wealth of coverage (.e00)
and shapefiles (.shp) on boundaries, hydrography, coastal land use, and more.
Census 2000 TIGER/Line Data
From ESRI: "GIS users can download Census 2000 TIGER/Line Data
in shapefile format for an area of interest. Users can choose multiple data
layers for a single county or a single data layer for multiple counties and
analyze them using GIS software such as
ArcGIS." A
good place to get shapefiles of census data associated with Bexar Co.
geographies, e.g., "race and ethnicity data at the block level."
1990-2006 TIGER/Line Data from ICPSR
Census geographies no longer available from the U.S.
Census website. NOT IN SHAPEFILE FORMAT.
Census Cartographic Boundary Files
See
Descriptions & Metadata for file information.
Texas State Data Center Texas Census 2000 Shapefiles
From the Texas State Data Center, a collection of TIGER/Line files from the
108th CD Census 2000. Download shapefiles at the
State and
County levels.
TCEQ: Texas Commission on Environmental Quality GIS page
A variety of GIS tools and data related to the Texas environment.
"Use this website to download 1 meter resolution DOQQs for the
entire state of Texas. You can also download available 2.5 meter DOQQs,
DRGs, TxDOT, DEMs, Hillshades, and more." National Agriculture Imagery
Project (NAIP) data by quad is available
here.
Census
2000 Data for Texas
From the U.S. Census Bureau's American FactFinder.
Description
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