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GIS Web Links

Links containing downloadable data:

Layer
Link
Description
Geospatial Data Gateway http://datagateway.nrcs.usda.gov/ Master source of data (Climate, Census, DEMs, DRGs, Geographic Names, Landuse / Landcover, Quadrangle Index, Ssurgo Soils, TIGER, etc.)
Boundaries http://geodata.oit.ohio.gov/
geodatadownload/data.aspx		 dlg boundaries (by 7 1/2' topo. quadrangle)(bd)
Contours http://geodata.oit.ohio.gov/
geodatadownload/data.aspx		 dlg hypsography layer (by 7 1/2' quad.) (hp)
Digital Elevation Model (DEM-1) http://metadataexplorer.gis.state.oh.us/
metadataexplorer/explorer.jsp		 30 meter DEM's by quadrangle. See NED
Digital Elevation Model (DEM-2) http://data.geocomm.com/dem/ 30 meter DEM's by quadrangle.  See NED
Digital Line Graph (DLG) http://geodata.oit.ohio.gov/
geodatadownload/data.aspx		 Line layers from 7 1/2 ' topo. quadrangles (includes boundaries, public land survey, contours, streams, railroads, misc tranportation)
Digital Ortho Quarter Quads (DOQQ-1) http://metadataexplorer.gis.state.oh.us/
metadataexplorer/explorer.jsp		 State enhanced doqq's (in MrSid format, state plane or utm projection)
Digital Raster Graphics (DRG-1) www.gisdatadepot.com/catalog/US/
61070/sublist.html		 DRG of 7 1/2 minute quadrangles (in tiff format)
Digital Raster Graphics (DRG-3) http://metadataexplorer.gis.state.oh.us/
metadataexplorer/explorer.jsp		 DRG of 7 1/2 minute quadrangles (in tiff format)
OCAP http://www.dnr.state.oh.us/gims/category/
tabid/10528/Default.aspx		 ODNR data layers (many different layers)
Geospatial Data Gateway-Lighthouse http://datagateway.nrcs.usda.gov/ Various data incl. 30m DEMs, enhanced DRGs,TIGER data, DOQQ county mosaics, etc.
National Elevation Dataset (NED) http://seamless.usgs.gov/ Seamless dataset with goal of 10 meter resolution.
Pipelines, etc. http://geodata.oit.ohio.gov/
geodatadownload/data.aspx		 dlg misc. transp. (by 7 1/2' topo. quadrangle) (mt)
Public Land Survey http://geodata.oit.ohio.gov/
geodatadownload/data.aspx		 dlg layer of public survey (by 7 1/2' quad.) (pl)
Railroads http://geodata.oit.ohio.gov/
geodatadownload/data.aspx		 dlg railroads (by 7 1/2' topo. quadrangle)(rr)
Roads(1) http://geodata.oit.ohio.gov/
geodatadownload/data.aspx		 dlg roads (by 7 1/2' topo. quadrangle) (rd)
Roads(2) http://www.dot.state.oh.us/Divisions/Planning/
TechServ/OfficeOrg/Pages/
TransportInfoMgemnt.aspx		 ODOT layers for interstates, U.S. Highways and State Highways.  Data is referenced to Ohio state plane, south zone, nad83, meters. 
Soils http://soildatamart.nrcs.usda.gov/ SSURGO Soil Data Mart (also see OCAP soils data)
Streams - 1 http://nhd.usgs.gov/ National Hydrography Dataset (by 8-digit basin)
Streams -2 http://geodata.oit.ohio.gov/
geodatadownload/data.aspx		 dlg streams (by 7 1/2' topo. quadrangle) (hy)
Tiger data http://www.esri.com/data/download/
census2000_tigerline/index.html  		 ESRI online data (includes Census TIGER Data)
USGS misc. layers http://www.nationalatlas.gov/atlasftp.html National Map Atlas data of the U. S. in shape and sdts formats
USGS misc. layers http://edcwww.cr.usgs.gov/doc/
edchome/ndcdb/ndcdb.html		 National Mapping Information - US Geo Data
Watershed Boundaries www.oh.nrcs.usda.gov/technical/14-digit 11- and 14-digit watersheds in shape file format

GIS software and data viewers:

 Software

Link

Description
ArcExplorer http://www.esri.com/software/
arcexplorer/index.html		 Version 2 (Windows) & 3 (Java plug-in)
Arcview Scripts http://arcscripts.esri.com/ Avenue scripts at ESRI
Arcview Symbols http://www.mapsymbols.com/ Large source for Arcview symbols 
Erdas Image Viewer http://www.erdas.com "ViewFinder"
Free GIS Software http://software.geocomm.com Free viewers, scripts, extensions,
translators, etc.
Corpscon http://crunch.tec.army.mil/software/
corpscon/corpscon.html		 Army Corps program to convert pts.
between projections and datums
MapWindows http://mapwindow.org Free Open Source Desktop GIS
MrSid Image Viewer http://www.lizardtech.com For data compressed with MrSid software
Quantum http://www.qgis.org Free Open Source Desktop GIS

Other GIS links of general interest: 

Site
Link
Description
Center for Advanced Spatial Technologies http://cast.uark.edu/ CAST at Univ. of Ark.
City of Westerville http://www.westerville.org/index.aspx?page=118 Scale enabled views
Earth Resources Observation Systems http://edcftp.cr.usgs.gov/ USGS site (EROS)
ESRI page for Local Government http://www.esri.com/industries/
localgov/index.html		 Environmental Systems Research Institute, Inc.
Federal Geographic Data Committee http://www.fgdc.gov/ FGDC Clearinghouse web sites
Geospatial Information & Technology Assoc. http://gita.org/chapters/iko/iko.asp GITA (Indiana, Kentucky, Ohio region)
GPS at Nebraska NRCS Site www.ne.nrcs.usda.gov/technical/gpis.html PLGR/GARMIN Download, ARCView & TerraModel Support Tools
Kentucky GIS Center Links http://www.ky.nrcs.usda.gov/technical
/GIS/index.html		  
MapQuest.com, Inc. http://www.mapquest.com Contains world atlas maps, etc.
NRCS GIS Site http://www.nrcs.usda.gov/wps/portal/nrcs/
detail/national/technical/nra/nri/?&cid=nrcs143_013691		  
ODNR GIS POLICY http://www.dnr.state.oh.us/tabid/
15402/Default.aspx		 Geographic Information Policy & Guidelines
Ohioview http://www.ohioview.org Landsat images, etc.
Ohio Geographically Referenced Information Program(OGRIP) http://ogrip.oit.ohio.gov/ Data Links, sharing, policy, etc.
Open GIS Consortium http://www.opengis.org/ Goal of GIS Interoperablity
National Geodetic Survey http://www.ngs.noaa.gov/PC_PROD/pc_prod.shtml PC Software from NGS
TerraServer http://www.terraserver.com/ National Data
USGS - National Map Atlas of the U. S. A. http://www.nationalatlas.gov/ Interactive maps

GIS Education (Dictionaries, glossaries, projections, etc.):

 Site Link Description
Dictionary of Abbreviations
and Acronyms		 www.lib.berkeley.edu/EART/abbrev.html GIS, Cartography and
Remote Sensing
Dictionary www.geo.ed.ac.uk/agidict/welcome.html GIS Dictionary
Geodesy from NGA http://earth-info.nga.mil/GandG/ National Geospatial-Intelligence Agency
Current Events and Education http://www.gismonitor.com/ Industry website
GIS FAQ http://www.census.gov/geo/
www/gis_gateway.html		 Frequently Asked
Questions
GIS Basics http://www.esri.com/gisforeveryone/basics/ ESRI GIS Basics
Glossary of GIS Terms http://training.esri.com/campus/library/
Bibliography/RecordDetail.cfm?ID=5863		 Glossary
Map Projection
Overview(1)		 http://www.geo.hunter.cuny.edu/mp/ Projections (& links to
other overviews)
Map Projection
Overview(2)		 http://www.colorado.Edu/geography/gcraft/
notes/mapproj/mapproj_f.html		 Projections (& links to
other overviews)
National Geospatial-
Intelligence Agency 		https://www1.nga.mil/Pages/default.aspx Online References
Software Manuals http://geosparkap.tripod.com/
geospark/id1.html		 For ARCGIS & MapInfo
Tutorials http://spatialnews.geocomm.com/
education/tutorials/		 Tutorials on all
things GIS

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