Relief and depths shown by contours.
"Uncontrolled base map prepared by U.S. Geological Survey from single aerial photograph taken November 30, 1971."
Includes text, map of "Lake Minnehaha drainage basin," diagr. of "Lithology at 3 well sites near Lake Minnehaha" cross section of Lake Minnehaha water flow, 2 statistical tables, 6 graphs, and location map.