Geospatial One Stop http://www.geodata.gov/
A central source for US Government data. This is a very large compendium of data sources and also information about data.
Water Resources Maps and GIS Information http://water.usgs.gov/maps.html A link to 12 data sources with map data from the USGS or organizations connected with the USGS.
Description http://water.usgs.gov/GIS/huc.html
Get the data http://water.usgs.gov/lookup/getspatial?huc250k
The 8-digit hydrologic cataloging units are the basic water
resources subdivision of the United States
Watershed Boundary Dataset (12 digit HUCs for the US) http://www.ncgc.nrcs.usda.gov/products/datasets/watershed/
EPA Reach File 1 (RF1), Version 2.0
Description http://water.usgs.gov/GIS/metadata/usgswrd/XML/erf1_2.xml
Get the data http://water.usgs.gov/GIS/dsdl/erf1_2.e00.gz It used to be that you could get RF1 for each 2-digit water resources region of the nation separately, but it appears that is no longer the case, and this file contains RF1 for the whole nation.
Description http://www.epa.gov/OST/BASINS/
Get the data http://www.epa.gov/waterscience/basins/b3webdwn.htm
Contains a large inventory of environmental data organized by 8-digit hydrologic cataloging units
Description http://nhd.usgs.gov
Get the data http://nhd.usgs.gov/data.html
NHD in Geodatabase http://nhd.usgs.gov/geodatabase_review.html
NHDPlus http://www.horizon-systems.com/nhdplus/ A dataset that integrates the National Hydrography, Elevation, and Land Cover Datasets.
Seamless data distribution from EROS Data Center http://seamless.usgs.gov/
US Coastline from National Geophysical
Coastline Extractor http://www.ngdc.noaa.gov/mgg/shorelines/shorelines.html
Statsgo – State Soil Database (1:250,000 scale) http://www.soils.usda.gov/survey/geography/statsgo/
Ssurgo – County Soil Database http://www.soils.usda.gov/survey/geography/ssurgo/
Statsgo is available for the whole
USDA
Data Gateway http://datagateway.nrcs.usda.gov/
National Land Cover Institute http://landcover.usgs.gov/
Land cover data on the seamless server http://seamless.usgs.gov/
Land Cover Change 1992 to 2001 http://www.mrlc.gov/multizone.php
Exercise on analyzing Land Cover Change http://www.ce.utexas.edu/prof/maidment/giswr2007/Land_Change/LandChange.mht
National Wetlands Inventory Center http://www.fws.gov/wetlands/
National Atlas of the
National Climate Data Center http://www.ncdc.noaa.gov/
NCDC Climate Data Online http://cdo.ncdc.noaa.gov
Description of how to use Climate Data Online:
http://www.ce.utexas.edu/prof/maidment/gradhydro2005/docs/ncdcdata.doc
USDA Water and
For an exercise using PRISM and land cover data to estimate nonpoint source pollution, see:
http://www.ce.utexas.edu/prof/maidment/giswr2005/ex6/ex6.doc
Gridded daily precipitation and temperature on a 1 km grid, 1980—1997.
Nexrad stage III precipitation data http://dipper.nws.noaa.gov/hdsb/data/nexrad/nexrad.html and procedures for using it (http://dipper.nws.noaa.gov/hdsb/data/nexrad/nexrad.html). (No more recent than 2005 and rather awkward to use)
University of Washington gridded meteorological data
http://www.hydro.washington.edu/SurfaceWaterGroup/Data/gridded/index.html
NRCS National Water and Climate Center http://www.wcc.nrcs.usda.gov/ that includes water supply forecasts, snow, precipitation and temperature.
SNOTEL http://www.wcc.nrcs.usda.gov/snotel/ real time snow data
USGS National Water Information System http://water.usgs.gov/usa/nwis/
Real Time USGS Data on Water Watch http://water.usgs.gov/nwis/rt
CUAHSI Hydrologic Information System http://his.cuahsi.org
WaterOneFlow web services for water data http://hiscentral.cuahsi.org/pub_services.aspx
LandSat
Free Landsat Scenes http://glovis.usgs.gov.
NASA Land Processes DAAC https://lpdaac.usgs.gov/
Digital Chart of the World http://www.maproom.psu.edu/dcw/
Shuttle Radar Topography
HydroSheds – hydrologic derivative datasets from SRTM http://hydrosheds.cr.usgs.gov/
GTOPO30 - 30 arc-second cell (1:1,000,000 scale) global DEM http://eros.usgs.gov/#/Find_Data/Products_and_Data_Available/GTOPO30
Hydro1K – hydrologic derivative datasets from GTOPO30 http://eros.usgs.gov/#/Find_Data/Products_and_Data_Available/gtopo30/hydro
Global Water and Energy Experiment (GEWEX) http://www.gewex.org/
WaterGap – world water resources and water use http://grdc.bafg.de/servlet/is/1890/
Texas
Data
Texas Water Development Board GIS Data http://www.twdb.state.tx.us/mapping/gisdata.asp
TNRIS Data http://www.tnris.state.tx.us/datadownload/download.jsp
Utah Automated Geographic Reference Center http://agrc.its.state.ut.us/ contains
USGS Maps, DEM's, Orthophoto quads within Utah.
Also includes if you look hard enough, liquefaction potential, Hydrography and
Environmental data for certain locations. Also – 2 m resolution bear
earth LIDAR data for Wasatch front.
Western Regional Climate Center http://www.wrcc.dri.edu/
Bear River Watershed Information System. http://www.bearriverinfo.org/
Great Salt Lake Basin Hydrologic Observatory. http://greatsaltlake.utah.edu/
Utah Climate Center. http://climate.usurf.usu.edu/
Nebraska Data
Geospatial OneStop
for Nebraska
NE Digital
Data Bases (Conservation and Survey
Division)
National Drought Mitigation Center
High Plains Regional Climate Center