Digital Data Access and Procedures
 

California Spatial Information Library

Geographic Data Library http://www.gis.ca.gov/
 

Census

2000 County and County Equivalent Areas in ARC/INFO Ungenerate (ASCII) format http://www.census.gov/geo/www/cob/co2000.html#ascii

Census FTP Download http://ftp2.census.gov/

Geocoding Address Data and Census Mapping http://library.gmu.edu/resources/govt/Geocoding.pdf

Mapping Census Data with GIS http://library.gmu.edu/resources/govt/mapping.pdf

TIGER/Line Files http://www.icpsr.umich.edu/TIGER/
 

DEM

NED replaces DEM data as of January 2, 2006

DEMs of California http://130.166.124.2/ca_dems.htm

Importing DEMs into ArcGIS 8.1 and ArcView 3.2

 USGS SDTS format Digital Elevation Model data (DEM) http://www.gisdatadepot.com/dem/
 

DLG

USGS Geographic Data Download http://edc.usgs.gov/geodata/
 

DRG

California Digital Raster Graphics http://casil.ucdavis.edu/casil/gis.ca.gov/drg/

Geographic Data Library http://www.gis.ca.gov/

Online Sources for Free DRGs

Teale DRG index

Teale DRG projection information

Teale DRG ESRI projection file

USGS 7.5 Minute Digital Raster Graphics By County  http://ceres.ca.gov/geo_area/quads.html
 

DOQQ access and procedures

Adobe Photoshop import procedure for DOQQs

Digital Orthophotography and GIS http://gis.esri.com/library/userconf/proc95/to150/p124.html

DOQQ codes

DOQQ: Keyword Header Specifications

DOQQ naming convention and ArcView import procedure

DOQQ-to-GeoTIFF DOS conversion executable  http://rockyweb.cr.usgs.gov/software/doq2geotiff.exe

TerraServer http://www.terraserver.com/

USGS Seamless Data Distribution System http://seamless.usgs.gov
 

Flexible Image Transport System (FITS)

ESA/ESO/NASA Photoshop FITS Liberator http://www.spacetelescope.org/projects/fits_liberator/
 

GIS news

Directions Magazine http://www.directionsmag.com/
 

GIS tutorials

CSISS - GIS Cookbook http://www.csiss.org/cookbook/
 

Georectifying

Georectifying images in ArcGIS 9.x http://www.mcgill.ca/files/gic/rectify9.pdf
 

Georeferencing

Georeference an image in ArcGIS http://www.columbia.edu/acis/eds/gis/georef.html

Georeferencing Images and CAD Data http://www.gsd.harvard.edu/gis/manual/georeferencing/index.htm

NGMDB Image Library georeferencing tutorial http://ngmdb.usgs.gov/Info/imlibhelp/georef/
 

GeoSpatial One-Stop

Geodata.gov http://geodata.gov/
 

GTOPO30

GTOPO30 - Global Topographic Data http://edcdaac.usgs.gov/gtopo30/gtopo30.asp
 

Hydrology

Historical Streamflow Data for the Nation http://waterdata.usgs.gov/nwis/

Real-Time Streamflow Data for the Nation http://waterdata.usgs.gov/nwis/rt

USGS Office of Surface Water http://water.usgs.gov/osw/

Water Watch - Current Water Resources Conditions http://water.usgs.gov/waterwatch/
 

IMAGINE procedures

Air Photo Rectification in ERDAS Imagine Using DOQQs

Air Photo Rectification in ERDAS Imagine Using GPS Coordinates

Georeferencing Topo Maps
 

LANDSAT data and procedures

Building a visible color composite image of Landsat 7 bands using ERDAS Imagine

Creating a color composite image by merging 3 bands of Landsat data using Adobe Photoshop

ESAD Geocover Landsat mosaics https://zulu.ssc.nasa.gov/mrsid/

How to create a "real color" JPEG from Landast TM spectral data using ArcView Image Analysis or Adobe Photoshop

Landsat data at the Global Land Cover Facility  http://glcfapp.umiacs.umd.edu/index.shtml

Map & Imagery Laboratory Landsat 7 holdings
 

LizardTech (MrSID) downloads

LizardTech popular downloads http://www.lizardtech.com/download/
 

LULC, NLCD (land use, land cover)

National Land Cover Data 1992 single file coverage http://cdiac.ornl.gov/datasets/spatial/NLCD92/NLCD92.html

USGS Geographic Data Download http://edc.usgs.gov/geodata/

USGS National Land Cover Characterization http://landcover.usgs.gov/natllandcover.html

USGS Seamless Data Distribution System http://seamless.usgs.gov
 

MODIS

MODIS Rapid Response System http://rapidfire.sci.gsfc.nasa.gov/
 

NED

NED replaces DEM data as of January 2, 2006

National Elevation Dataset http://ned.usgs.gov/

USGS Geographic Data Download http://edc.usgs.gov/geodata/

USGS Seamless Data Distribution System http://seamless.usgs.gov
 

Projection files (ESRI .prj)

NAD 27 UTM 10 North

NAD 27 UTM 11 North

NAD 27 UTM 12 North

NAD 83 UTM 10 North

NAD 83 UTM 11 North

NAD 83 UTM 12 North

Teale DRG

Sierra Nevada Ecosystem Project (SNEP)

SNEP Map/Data Site http://www.ice.ucdavis.edu/snep/

SNEP Data Download Service http://www.ice.ucdavis.edu/snep/download.asp
 

Social Sciences

ICPSR - Inter-university Consortium for Political and Social Research http://www.icpsr.umich.edu/
 

Soils

Soil Survey Manuscripts http://soils.usda.gov/survey/online_surveys/

State Soil Geographic Database (STATSGO) http://www.ncgc.nrcs.usda.gov/products/datasets/statsgo/

STATSGO (US Soils) http://water.usgs.gov/lookup/getspatial?ussoils
 

SPOT Image

SPOT Grid Reference System (GRS) http://www.alexandria.ucsb.edu/~gjanee/spot/kj/kj.pdf

USGS Documents and Reports

GeoPubs http://geopubs.wr.usgs.gov/

Miscellaneous Field Studies http://pubs.usgs.gov/mf/

Miscellaneous Field Studies Map Files http://geopubs.wr.usgs.gov/map-mf/

Open File Reports http://pubs.usgs.gov/of/

Scientific Investigations Maps http://pubs.usgs.gov/sim/

USGS Geologic Information - Books and Other Publications http://pubs.usgs.gov/products/books/index.html

Water Related Open-File Reports http://pubs.usgs.gov/of/index-water.html

ZIP Code

ZIP Code Geography and Mapping