https://openstreetmap.org/copyright | https://openstreetmap.org |
Copyright OpenStreetMap and contributors, under an open license |
https://openstreetmap.org/copyright | https://openstreetmap.org |
Copyright OpenStreetMap and contributors, under an open license |
I think that if the dam were removed, the pond behind it wouldn't exist anymore, no? Also note the southern bank of the reservoir, which is straight -- probably not a natural boundary. I think that the dam is simply very old. New Google Maps satellite pix from 2016 show the area where the dam must be to be covered entirely in trees.
More info than you'd ever want:
https://apps.dtic.mil/sti/pdfs/ADA145216.pdf