GPS Coordinates for Mileposts Along the Upper Mississippi River

http://www.mvp-wc.usace.army.mil/ftp/pub/navcharts/

There are a bunch of PDF files with maps, between those, with their roads, landmarks, and the river mile markers you can use MapSource, or Google Earth, or something like those and plot the river mile markers onto MapSource, or whatever and build a POI file.

The PDF Maps do have latitude & longitude lines labeled on them, so you should be able to get fairly close when placing your plots read from the one map onto the other.

I guess persistence pays. I also found the US Army Corps of Engineers NAvigation Data Center U.S. Waterway Data Waterway Mile MArker Database at:

http://www.iwr.usace.army.mil/NDC/data/datamile.htm

http://www.iwr.usace.army.mil/ndc/db/watermil/data/

http://www.iwr.usace.army.mil/ndc/db/watermil/data/milepnt.t...

It looks like the format is:

RECORD LAYOUT:

FIELD TYPE WIDTH DEFINITION

1. LONGITUDE INTEGER 10 MILE MARKER LONGITUDE IN DECIMAL

2. LATITUDE INTEGER 10 MILE MARKER LATITUDE IN DECIMAL

3. RIVERNO TEXT 2 RIVER NUMBER (2 DIGIT ID NUMBER)

4. MILE INTEGER 4 MILE ALONG RIVERWAY

5. RIVERCD TEXT 2 RIVER CODE (2 CHAR RIVER CODE)

It looks like it was not as difficult to find as the railroad data that I was looking for!

I'm not expert enough with Excel to get the decimal point into the latitude & longitude - otherwise, the rest of the data would be a breeze to dump into Excel and build a POI file.