Web Based Data Sources 2010

Army Geospatial Center (Formerly TEC)
AGC National Datums and Subsidence Program: Information on Vertical Datums and Their Relationship to Our Civil Works Projects
CORSPCON: Performs datum and coordinate system conversions
CO-OPS: NOAA’s Tidal Division - Center for Operational Oceanographic Products and Services
OPUS: NGS’s Online Positioning User Service
U-SMART: USACE Survey Monument Archival and Retrieval Tool (U-SMART)
USACE Engineering Publications: Engineering Manuals etc.
NGS Publications: Publications from the National Geodetic Survey
CADD/BIM Technology Center Products: Technology Center
MetaData: Corps of Engineers Geospatial Data Clearing House

GIS Organizations

Public Records On-Line 
KY Office of GIS

GIS Data (USGS Products)

GIS Data Depot 
TopoZone, GIS data

Survey Control

NGS Data Sheets 

Satellite Imagery

Terra Server Imagery 

General Resources

Magnetic Declination: National Geophysical Data Center - Geomagnetism 
A/E/C CADD Standards 
Mr. Sid Image Compression 
Sun Angle Calculator 
Earth Resources Obsvn. and Science (EROS)-Ortho Photos 
National Atlas 
The National Hydrography Dataset 
USGS Seamless Data 
NRCS Soil Survey Data 
U.S. Census Bureau 
Optimal Geomatics 
Purdue University Hydrologic Models 
CAGIS Data Links 
Sources of Free Ortho Photos 
USDA Aerial Photography Data (NAIP) 
Geospatial Data Coordination Contacts by State 
Ground Penetrating Radar Equipment
US Radar - Ground Penetrating Radar Systems