The final is at the following coordinates. find the information needed from the sign to fill in the correct numbers to grab the cache.
N 46 4A.BCD W 94 2E.FGH
A = # of letters last word on red/white sign on Dam facing swimming area
B = # of waterfowl on yellow sign on bridge
C = last # from the bridge number sign
D = last digit of year stamped into the concrete step, green paint
E = # of rungs of the ladder, facing west
F = sum of the first two digits, from the left, of bridge number
G = # of letters stamped into concrete, green paint
H = first digit of year, from left, stamped into concrete, green paint
You can check your answers for this puzzle on GeoChecker.com.