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Corpscon Version 6.0
Corpscon, Version 6.0, is a MS-Windows-based program which allows the user to convert coordinates between Geographic, State Plane, Universal Transverse Mercator (UTM) and US National Grid systems on the North American Datum of 1927 (NAD 27), the North American Datum of 1983 (NAD 83) and High Accuracy Reference Networks (HARNs). Corpscon uses the National Geodetic Survey (NGS) program Nadcon to convert between NAD 27, NAD 83 and HARNs. Corpscon, Version 6.0, performs vertical conversions to and from the National Geodetic Vertical Datum of 1929 (NGVD 29) and the North American Vertical Datum of 1988 (NAVD 88). Vertical conversions are based on the NGS program Vertcon and can be performed for the continental U.S. only. Corpscon, Version 6.0, will also calculate geoid-ellipsoid separations based on the NGS program GeoidXX (XX = 90, 93, 96, 99, and 03). Geoid-ellipsoid separations can be calculated for the Continental U.S., Alaska, Hawaii and Puerto Rico/U.S. Virgin Islands.

Disclaimer and Use Statement

The United States Government (the Government) furnishes these computer programs (along with any associated documentation) and the recipient accepts and uses them with the express understanding that the Government makes no warranties, expressed, or implied, concerning the accuracy, completeness, reliability, usability, or suitability for any particular purpose of the information and programs furnished.

The United States shall be under no liability whatsoever to any person or organization by reason of any use made thereof. These programs belong to the Government. Therefore, the recipient further agrees not to represent these programs to anyone as other than Government programs.

The recipient may not transfer these programs to others without also transferring this disclaimer.

Changes between Version 5.x and 6.x
There were several changes made to the Version 6.x of Corpscon to allow flexibility for new and future Geoid models, Nadcon files, and Vertcon files. A summary of changes are as follows:
  • Selection of Geoid model used for conversion (90, 93, 96, 99, and 03)
  • Selection of custom Vertcon or Geoid files (if available)
  • Conversion to/from National Grid Reference System (NGRS)
  • Increased number of fields for User Defined files
  • Accuracy statement of conversions
  • Redesigned interface
  • Help for selecting correct State Plane and UTM zones
  • dll for inclusion in other software
  • Improved documentation and user’s manual
Version 5.x is still available by clicking here

New Excel version of Corpscon
Now available - Beta version of Corpscon that runs inside of Excel. Paste your input data to the input worksheet, identify your conversion preferences in the setup worksheet, and your output is stored on the output worksheet ready for additional calculations using the Excel built-in functions. Caution - This version has not been tested and may produce erroneous results.

Downloading and Installing Corpscon 6.x
HARDWARE AND SOFTWARE REQUIREMENTS

Corpscon 6.0 has been tested on a 166MHz, Pentium machine running Windows98SE with 64 MB of RAM and a screen area of 800x600 pixels. Corpscon 6.0 should run on Windows95, but it has not been tested with this operating system. Corpscon will not run on any 16-bit versions of Windows (Windows 3.1 or below) and it will not run under DOS.

INSTALLATION PROCEDURES

Corpscon6_update File - This file should be downloaded only if you have a downloaded Corpscon prior to April 26, 2005. If the install files were downloaded after April 26, 2005, then they already include the corrected files. To install this update, extract these files to the directory in which Corpscon 6.0 was installed. If the default installation was used, this directory is 'C:\Program Files\Corpscon6\'. If prompted, overwrite the existing files in the directory. You cannot run Corpscon with this zip file alone. You must have already downloaded one of the distributions listed below.

Issues Resolved:
4/26/05 - Error in resolving certain USNG zones. Unit conversion problem when using International Feet in Vertical conversions.

There are five Corpscon setup (install) files:
  1. corpscon_complete.exe(104 MB, 140 MB installed) - installs all the Geoid and Vertcon data files, including Alaska (don’t recommend this without high speed connection and still might take a while)
  2. corpscon_conus_geoxx.exe (84 MB, 115 MB installed) - installs all the Geoid and Vertcon files for conversions within CONUS
  3. corpscon_conus_geo03.exe (42 MB, 60 MB installed) - installs only the Geoid03 and Vertcon files for conversions within CONUS
  4. corpscon_base_alaska.exe (7 MB, 20 MB installed) - installs only the those files for horizontal conversions (no Geoid or Vertcon data files), including Alaska
  5. corpscon_base_conus.exe ( 6 MB, 19 MB installed) - installs only the those files for horizontal conversions (no Geoid or Vertcon data files) within CONUS only.
To install Corpscon, run

corpscon_*.exe (* = one of the options listed above)

from CD or from the directory on the local hard disk where the program was downloaded. Follow the prompts in the setup program to complete installation. Geoid, Vertcon, and other data files may be downloaded separately and copied to the appropriate directory by following the program directory structure listed below if downloading an install file other than the complete (first option above).

If you are experiencing a problem with Alaska Zone 1 and downloaded Corpscon v6.0 before 16 December, please download this new file, corpscon_v6.dll or corpscon_v6_dll.zip. Save this new file (for the zipped file, extract contents of the file - corpcon_v6.dll) to the Corpscon6 directory, typically C:\Program Files\Corpscon6, and overwrite the existing one. If you download Corpscon v6.0 after 16 December, this fix has already been incorporated into the distribution files.

Base Distribution Files

!!!Notice!!! Zone 7 for Geoid03 has been updated... g2003u07.bin !!!Notice!!!

Filename Size Description
corpscon_complete.exe 104 Mb Installs all the Geoid and Vertcon data files, including Alaska (don’t recommend this without high speed connection and still might take a while)
corpscon_conus_geoxx.exe 84 Mb Installs all the Geoid and Vertcon files for conversions within CONUS
corpscon_conus_geo03.exe 42 Mb Installs only the Geoid03 and Vertcon files for conversions within CONUS
corpscon_base_alaska.exe 7 Mb Installs only the those files for horizontal conversions (no Geoid or Vertcon data files), including Alaska
corpscon_base_conus.exe 6 Mb Installs only the those files for horizontal conversions (no Geoid or Vertcon data files) within CONUS only.
 
Vertcon Data Files - These files should be downloaded to the Vetcon directory under c:\Program Files\Corpscon6 if the default installation was used during installation.
Filename Size (approx.) Description
vertcone.94 1 Mb Vertcon data file for eastern Continental U.S. (66W to 89W long., 24N to 50N lat.)
vertconc.94 1 Mb Vertcon data file for central Continental U.S. (84W to 107W long., 24N to 50N lat.)
vertconw.94 1 Mb Vertcon data file for western Continental U.S. (102W to 125W long., 24N to 50N lat.)
 
Geoid Data Files - These files should be downloaded to the Geoid directory under c:\Program Files\Corpscon6 if the default installation was used during installation.
Filename Size (approx.) Description
geo96ne.geo 1.2 Mb Geoid96 data file for the north-eastern Continental U.S. (66W to 89W long., 36N to 50N lat.)
geo96se.geo 1.2 Mb Geoid96 data file for the south-eastern Continental U.S. (66W to 89W long., 24N to 38N lat.)
geo96nc.geo 1.2 Mb Geoid96 data file for the north-central Continental U.S. (84W to 107W long., 36N to 50N lat.)
geo96sc.geo 1.2 Mb Geoid96 data file for the south-central Continental U.S. (107W to 84W long., 24N to 38N lat.)
geo96nw.geo 1.2 Mb Geoid96 data file for the north-western Continental U.S. (102W to 125W long., 36N to 50N lat.)
geo96sw.geo 1.2 Mb Geoid96 data file for the south-western Continental U.S. (102W to 125W long., 24N to 38N lat.)
geo96hw.geo 175 Kb Geoid96 data file for Hawaii
geo96pr.geo 100 Kb Geoid96 data file for Puerto Rico/U.S. Virgin Islands
geo96an.geo 1.2 Mb Geoid96 data file for northern Alaska (128 W to 179 W longitude, 60 N to 72 N latitude)
geo96as.geo 1.2 Mb Geoid96 data file for southern Alaska (128 W to 179 W longitude, 51 N to 63 N latitude)
g1999u01.bin 4.9 Mb GEOID99 grid #1 for CONUS (40-58N, 230-249E)
g1999u02.bin 4.9 Mb GEOID99 grid #2 for CONUS (40-58N, 247-266E)
g1999u03.bin 4.9 Mb GEOID99 grid #3 for CONUS (40-58N, 264-283E)
g1999u04.bin 4.9 Mb GEOID99 grid #4 for CONUS (40-58N, 281-300E)
g1999u05.bin 4.9 Mb GEOID99 grid #5 for CONUS (24-42N, 230-249E)
g1999u06.bin 4.9 Mb GEOID99 grid #6 for CONUS (24-42N, 247-266E)
g1999u07.bin 4.9 Mb GEOID99 grid #7 for CONUS (24-42N, 264-283E)
g1999u08.bin 4.9 Mb GEOID99 grid #8 for CONUS (24-42N, 281-300E)
g1999a01.bin 5.4 Mb GEOID99 grid #1 for Alaska (60-72N, 172-204E)
g1999a02.bin 5.4 Mb GEOID99 grid #2 for Alaska (60-72N, 202-234E)
g1999a03.bin 5.4 Mb GEOID99 grid #3 for Alaska (49-61N, 172-204E)
g1999a04.bin 5.4 Mb GEOID99 grid #4 for Alaska (49-61N, 202-234E)
g1999h01.bin 0.6 Mb GEOID99 grid #1 for Hawaii (18-24N, 199-206E)
g1999p01.bin 0.4 Mb GEOID99 grid #1 for Puerto Rico/VI (15-21N, 291-296E)
g2003u01.bin 4.8 Mb GEOID03 grid #1 for CONUS (40-58N, 230-249E)
g2003u02.bin 4.8 Mb GEOID03 grid #2 for CONUS (40-58N, 247-266E)
g2003u03.bin 4.8 Mb GEOID03 grid #3 for CONUS (40-58N, 264-283E)
g2003u04.bin 4.8 Mb GEOID03 grid #4 for CONUS (40-58N, 281-300E)
g2003u05.bin 4.8 Mb GEOID03 grid #5 for CONUS (24-42N, 230-249E)
g2003u06.bin 4.8 Mb GEOID03 grid #6 for CONUS (24-42N, 247-266E)
g2003u07.bin 4.8 Mb GEOID03 grid #7 for CONUS (24-42N, 264-283E)
g2003u08.bin 4.8 Mb GEOID03 grid #8 for CONUS (24-42N, 281-300E)
GEOID90E.GEO 1 Mb Geoid90 data file for eastern CONUS
GEOID90C.GEO 1 Mb Geoid90 data file for central CONUS
GEOID90W.GEO 1 Mb Geoid90 data file for western CONUS
GEOID93E.GEO 1 Mb Geoid93 data file for eastern CONUS
GEOID93C.GEO 1 Mb Geoid93 data file for central CONUS
GEOID93W.GEO 1 Mb Geoid93 data file for western CONUS
HAW93.GEO 0.1 Mb Geoid93 data file for Hawaii
PRVI93.GEO 0.1 Mb Geoid93 data file for Puerto Rico/U.S. Virgin Islands
ALA94.GEO 0.8 Mb Geoid93 data file for Alaska
 
Alaska Data Files - These files should be downloaded to the directory in which Corpscon was installed.
Filename Size (approx.) Description
alaska.las 525 Kb Nadcon data file for Alaska (requires alaska.los also)
alaska.los 525 Kb Nadcon data file for Alaska (requires alaska.las also)
stgeorge.las 35 Kb Nadcon data file for St. George Island (requires stgeorge.los also)
stgeorge.los 35 Kb Nadcon data file for St. George Island (requires stgeorge.las also)
stlrnc.las 20 Kb Nadcon data file for St. Lawrence Island (requires stlrnc.los also)
stlrnc.los 20 Kb Nadcon data file for St. Lawrence Island (requires stlrnc.las also)
stpaul.las 10 Kb Nadcon data file for St. Paul Island (requires stpaul.los also)
stpaul.los 10 Kb Nadcon data file for St. Paul Island (requires stpaul.las also)
 
Contact Us
Due to restricted resources, very limited assistance is available to non-Corps of Engineers users. TEC will maintain this web site and update the Frequently Asked Questions page. Please exhaust these web resources and the CORPSCON help files, before e-mailing the Point of Contact. TEC will provide assistance, where possible, although response to inquiries is not guaranteed.

The POC for this page:
CEERD-TR-A
Corpscon POC

Geospatial Applications Branch, Topographic Engineering Center, U.S. Army Engineer Research and Development Center