Relief shown by contours and spot heights.
"Contour interval 10 feet."
Depths shown by isolines and soundings.
"Topography by photogrammetric methods from aerial photographs taken 1954 and planetable surveys 1955. Revised from aerial photographs taken 1966. Field checked 1967."
"Revisions shown in purple compiled from aerial photographs taken 1976 and other sources. This information not field checked. Map edited 1981."
Includes quadrangle location map.
"N4037.5--W7400/7.5."
"DMA 6165 II NE--Series V822."