(W 87°45ʹ00ʺ--W 87°37ʹ30ʺ/N 44°07ʹ30ʺ--N 44°00ʹ00ʺ).
Relief shown by contours and spot heights, depths shown by isolines and soundings.
"Contour interval 10 feet."
"Topography from aerial photographs by photogrammetric methods and by planetable surveys 1954. Aerial photographs taken 1951. Hydrography from U.S. Lake Survey charts 735 (1: 10 000) and 73 (1:120 000)."
Horizontal datum name: 1927 North American datum.
10,000-foot grid based on Wisconsin coordinate system, south zone.
"Control by USGS and USC&GS."
"Depth curves and soundings in feet - datum is 578 feet."