Ground-water levels, flow, and quality in northwestern Elkhart County, Indiana, 1980-89 /
by Richard F. Duwelius and Cheryl A. Silcox ; prepared in cooperation with the Elkhart Water Works.

APA Citation

Duwelius, R. F., Silcox, C. A., Geological Survey (U.S.)., Elkhart Water Works. (1991). Ground-water levels, flow, and quality in northwestern Elkhart County, Indiana, 1980-89. Indianapolis, Ind.: U.S. Dept. of the Interior, U.S. Geological Survey .

MLA Citation

Duwelius, Richard F, Cheryl A Silcox, Geological Survey (U.S.), and Elkhart Water Works. Ground-water Levels, Flow, And Quality In Northwestern Elkhart County, Indiana, 1980-89. Indianapolis, Ind.: U.S. Dept. of the Interior, U.S. Geological Survey , 1991.