Waterway Mile Marker Database
Sequential mile positions of navigable inland waterways and the Gulf Intracoastal Waterway.
Contains 11,261 sequential mile positions of navigable inland waterways and the Gulf Intracoastal Waterway. Records include eight fields; id, latitude, longitude, mile, river code, river name, river number, source .
Source of Data
This was a joint effort of the Navigation Data Center and Waterborne Commerce Statistics Center and the Defense Mapping Agency using the USACE district chart books, USGS 1:24000 topographic quadrangle maps, IENC, MVN, and NENC nautical charts of varying scales.
U.S. Army Corps of Engineers/CEIWR, Navigation Data Center and Waterborne Commerce Statistics Center
Geographic Coverage of Data: U.S. navigable inland waterways and the Gulf Intracoastal Waterway
Data quality/accuracy: 60% of the data was extracted from IENC and 20% USGS 1:24000 topographic quadrangle map sheets which have 1 meter accuracy. 5% of the data was extracted from NOAA nautical charts which have roughly the same accuracy depending on the scale. The remainder of the data was interpolated onto the USGS quadrangle map sheets using the USACE district chart books. The interpolated miles have accuracy of approximately 100 meters.
First Developed: 1994
Update Frequency: Continuosly upon review or request
Number of Records: 11,261
File Size: 1,406,464 bytes
File Format: ASCII Comma Delimited,dbf and Spreadsheet
Maximum Characters per Record: 68
Media: CD, disk, tape, hardcopy
Contact for Additional Information:
U.S. Army Corps of Engineers
7400 Leake Ave .
New Orleans, Louisiana 70118
Point of Contact: WCSC (504) 862-1406