Beaver Creek Drainage Area
28 February 1941
TREMPEALEAU COUNTY:
Flights 1, 2 and 3
Ratio of scale of photographs to scale of topo. sheets 2.84 to 1
Linear scale 1 inch = 1830 feet
Aerial scale 1 sq. in. = 76.87 acres
Flight 4
Ratio of scale of photographs to scale of topo. sheets 3.02 to 1
Linear scale 1 inch = 1725 feet
Aerial scale 1 sq. in. = 68.24 acres
JACKSON COUNTY:
Flights 5 and 6
Ratio of scale of photographs to scale of topo. sheets 3.00 to 1
Linear scale 1 inch = 1736 feet
Aerial scale 1 sq. in. = 69.35 acres
Linear scale of topographic sheets 1 in. = 5208 feet
Aerial scale of topographic sheets 1 sq. in. = 622.74 acres