Definitions for GPS points obtained by the Vanderburgh County Surveyor’s Office
|
HEADER NAME |
DESCRIPTION |
|
PT_ID |
Point Identification - County Surveyor’s assigned number
for point. Use this number when communicating comments about the point. |
|
NORTH_Y |
North State Plane coordinate – Indiana West Zone NAD 83
(North American Datum of 1983) |
|
EAST_X |
East State Plane coordinate – Indiana West Zone NAD 83
(North American Datum of 1983) |
|
ELEV_Z |
Elevation based on GEOID99 – NAVD 88 (North American
Vertical Datum of 1988) |
|
SEC_TWP_RG |
Section – Township – Range – Public Land Survey Designation
(for Vanderburgh County all Townships are South & all Ranges are West).
Section where the point is located. |
|
PT |
Point – Vanderburgh County Surveyor’s section corner
location alpha id |
| PT_TYPE | SEC = section corner, PROP = property pin, BM = benchmark, etc. |
|
MATERIAL |
Monument material - i.e. stone, iron pin, re-bar, RR spike,
etc. |
|
SIZE_FT |
Size of monument, if known, in feet (0 is default &
designates that size was not noted at the time of data collection) |
|
MISC_NOTES |
Miscellaneous notes on point – i.e. 6 inch BG (below
grade) |
|
SE_X |
Standard Error in Easting (X coordinate) based on least
squares adjustment |
|
SE_Y |
Standard Error in Northing (Y coordinate) based on least
squares adjustment |
|
SE_Z |
Standard Error in Elevation (Z coordinate) based on least
squares adjustment |
|
SDE |
Standard Deviation Error |
|
METHOD |
Survey GPS (Global Positioning System) method used to acquire
coordinates |
|
HARN_PT1 |
HARN (High Accuracy Reference Network) point used for
triangulation computations while acquiring point. {HARN is also known as HPGN
(High Precision Geodetic Network)} |
|
HARN_PT2 |
HARN (High Accuracy Reference Network) point used for
triangulation computations while acquiring point. {HARN is also known as HPGN (High
Precision Geodetic Network)} |
|
SURVEYOR |
Surveyor: Morley = Morley & Associates, Inc.; McDonald
= DJ McDonald, PE, LS; VCS = Vanderburgh County Surveyor’s Crew; NGS =
National Geodetic Survey |
|
DATE |
Date data obtained in the field |
Click here to DOWNLOAD the GPS points MS Excel file and agree to the disclaimer below.
NOTE: The current Flood Insurance Rate Map (FIRM) panels are based on National Vertical Datum of 1929 (NGVD 29). The elevations given in this file are based on North American Vertical Datum of 1988 (NAVD 88). To convert between NGVD 29 and NAVD 88 Corpscon may be used.
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.
Corpscon
may be downloaded at no cost:
http://crunch.tec.army.mil/software/corpscon/corpscon.html