Mapping the Northville and Mayfield Facilities
- I am having an inane amount of fun with my own mapping software. Obtaining the ICC valuation sketches has allowed me to definitively map parts of the FJ&G within about ten or fifteen yards of accuracy.
Review if you will the following points of reference. You can copy and paste the latitude and longitude coordinates into maps.google.com or maps.live.com to get an exact point. For the Mayfield measurements, I used the center line of Patch Road for a benchmark reference. For the Northville measurements, I used the Sacandaga Park station as a benchmark reference.
PATCH ROAD, CENTERLINE, REFERENCE BENCHMARK
MAYFIELD BRIDGE, SOUTH ABUTMENT
43°5'46.69"N, 74°15'33.40"W, or as a decimal, 43.0963027777778, -74.2592777777778
MAYFIELD BRIDGE, NORTH ABUTMENT
43° 5'47.17"N, 74°15'32.31"W, or as a decimal, 43.0964361111111, -74.258975
43° 5'48.47"N, 74°15'29.78"W, or as a decimal, 43.0967972222222, -74.2582722222222
MAYFIELD QUARRY SWITCH LOCATION:
SACANDAGA PARK STATION, REFERENCE BENCHMARK
43°13'22.64"N, 74°11'2.30"W, or, as a decimal, 43.2229555555556, -74.1839722222222
43°13'23.82"N, 74°11'1.94"W, or, as a decimal, 43.2232833333333, -74.1838722222222
43°13'29.85"N, 74°10'58.83"W, or, as a decimal, 43.2249583333333, -74.1830083333333
END OF TRACK
43°13'40.15"N, 74°11'1.93"W, or, as a decimal, 43.2278194444444, -74.1838694444445
The Mayfield bridge was a 96 foot span, abutment to abutment.
The biggest shock came when I plugged the end of track coordinates into TerraServer and zoomed in as tight as I could on the B&W aerial photo. Lo and behold, the right of way appears to be visible! The aerial photo on file with TerraServer was taken when the water was low. The tracks ended in a double-track arrangement precisely at the point I plotted; you can even make out the switch that connected the two tracks going from NW to SE. I am attaching two photos in my files section; one of the USGS/TerraServer photo; the other of the ICC diagram. Do the shapes line up to you?
I seem to recall seeing a foundation years ago at roughly the location where the Northville station appears to have stood. That was back when the water was low.
I hope this research helps other people understand the lay of the land. The points named above will obviously be good as long as latitude and longitude measurements remain done in the fashion described, which should be for many years to come. Hopefully someday when the water is low we can take a personal GPS device, the type hikers use, to check the points. My points may be off by several yards to the east or west because without a full triangulation it's hard to perfectly line up the right of way in Northville. The tracks curved just a bit leaving the Sacandaga station and again approaching the Northville station. Mayfield should be near perfect since the right of way was a straight shot up from Patch Road and Dennie's Crossing, and the linear measurements were easy to fix on a straight line.
Corrections, comments are of course welcome.