Aerial survey project no. 77S-35 was flown on April 22 and April 26, 1977. These photos are a verbal scale of 1"=250'. The flight lines provide coverage for highway 60 and bridge 5568 over the Heron Lake Outlet 3.5 miles northeast of Heron Lake.
Aerial survey project no. 77S-35 was flown on April 22 and April 26, 1977. These photos are a verbal scale of 1"=250'. The flight lines provide coverage for highway 60 and bridge 5568 over the Heron Lake Outlet 3.5 miles northeast of Heron Lake.
