USGS -- Water Resources of the United States  
   Includes information on water use, with both historical and current data.
   http://h2o.usgs.gov/

Useful Geography Links  
   List of links to websites on geography
   http://www.geog.byu.edu/links.htm

NASA's Global Change Master Directory  
   A comprehensive directory of information about Earth science data, including a broad coverage of the oceans, atmosphere, hydrosphere, solid earth, biosphere and human dimensions of global change.
   http://gcmd.gsfc.nasa.gov/

Soil and Water Conservation Society  
   A non-profit, scientific and educational organization of professional conservationists.
   http://www.swcs.org/

USGS Global Change Research Program  
   The U.S. Geological Survey's Global Change Research Program is an international source for ground-based and remotely sensed earth science data and information used by global change researchers and contributing to assessments of the potential effects of gl
   http://geochange.er.usgs.gov/

Color Landform Atlas of the United States  
   Maps include satellite information, 1895 state maps, and links to outside resources.
   http://fermi.jhuapl.edu/states/states.html

Fundamentals of Physical Geography: Online Textbook  
   An introduction to topics in physical geography including: geomorphology, meteorology, biogeography and hydrology.
   http://www.geog.ouc.bc.ca/physgeog/home.html

Physical Geography on the Internet.  
   A wide choice of links to sites dealing with earth surface features including natural hazards.
   http://geography.about.com/msubmenu2.htm

Physical Geography Net Links  
   Guide to many Physical Geography sites
   http://geography.about.com/education/geography/msub10.htm

Physical Geography sites on Internet  
   Index of articles about Daylight Saving Time, the hydrologic cycle, El Nino, rivers, seasons, ice ages, and more topics in Physical Geography
   http://geography.about.com/education/geography/library/weekly/topicsub7.htm

The Distinctiveness of Geography  
   Systematic development of a series of definitions of various aspects and subdisciplines of Geography.
   http://www.geog.umd.edu/homepage/courses/600/week09/dgeog/tsld001.htm

Cartographic bookmarks  
   Over 10,500 links to sites with and about maps.
   http://oddens.geog.uu.nl/index.html

Internet Resources for Physical Geography  
   Extensive list of links to sites pertaining to various subdisciplines of Physical Geography.
   http://www.uwsp.edu/geo/internet/physical_geog_resources.html

Maps and Geography  
   Map machine of National Geographic
   http://www.nationalgeographic.com/resources/ngo/maps/

Iowa Geological Survey Bureau, USA  
   Website of the Geological Survey Bureau of the Iowa Department of Natural Resources, including a Geologic Sample Database (GEOSAM)with geologic information for 35,000 locations in Iowa.
   http://www.igsb.uiowa.edu/

Altitude Profiles of Mountains  
   Altitude profiles of famous and unknown climbs.
   http://www.geocities.com/Yosemite/Gorge/2922/

USDA-Natural Resources Conservation Service  
   Provides links to conservation service offices in Fort Worth, Texas.
   http://www.nrcs.usda.gov/

The Six Essential Elements of Geography  
   What makes geography?
   http://www.ncge.org/publications/tutorial/overview/6.html

Virtual Geography Department Project  
   Series of online course in geography including slide shows.
   http://www.colorado.edu/geography/virtdept/contents.html