I am looking for GPS coordinates for the Upper Mississippi Pool 2 from River Mile 815 to 848. Does anybody know where I can go to get a list of coordinates that corresponds to the River Mile Markers? I am thinking either the U.S. Army Corps of Engineers or the U.S. Coast Guard, but I haven't quite found it yet. Also, although I have a Garmin StreetPilot 2730, does anybody know if the marine GPS units show river mile markers in any of the software that is available?
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:
It looks like the format is:
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.
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