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Water resources data for Michigan, water year 1971; Part 2, Water quality records
Water Resources Division, U.S. Geological Survey
1972, Water Data Report MI-71-2
Water resources data for the 1971 water year for Michigan include records of data for the chemical and physical characteristics of surface and ground waters. Data on the quality of surface water (chemical, temperature, and sediment) were collected from designated sampling sites at predetermined intervals such as once-daily, weekly, monthly...