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Water resources of the Kettle River watershed, east-central Minnesota
John O. Helgesen, G. F. Lindholm, W.L. Broussard, D.W. Ericson
1973, Hydrologic Atlas 437
The topography of the Kettle River watershed is formed primarily by glacial deposits that mantle the bedrock. The glacial deposits are generally less than 100 feet thick. Bedrock consists of several types and occasionally crops out at land surface. Topography ranges from gently rolling to steeply undulating. About 1,060 square miles...
Resource and land information for south Dade County, Florida
Water Resources Division, U.S. Geological Survey
1973, IMAP 850
South Dade County, at the southeast corner of Florida, exemplifies many of the environmental concerns that have developed throughout the United States. Considerable environmental information has recently been assembled from this region, and some of it is presented in this experimental report in folio form....