Ground-water Data for Michigan - 1973
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The purpose of this report is to make available the records of water levels in principal aquife rs of the State through 1973 and to compile other related data, such as records of ground-water pumpage. Also included in the report are data on municipal, public, and industrial water-supply facilities. Records of water levels in areas of heavy pumpage and in areas where changes are principally due to natural influences are illustrated or tabulated to allow comparison between these types of water-level fluctuations. The water levels and related data provide a record for the evaluation of available ground-water supplies. The long-term records serve as a framework to which short-term records may be related. This report is written for persons, municipalities, industries, institutions, consultants, drillers, and hydrologists interested in the ground-water resources of the State.
Table 1 contains records of measurements of water levels in observation wells, well locations, depths, elevations, aquifers tapped, and water level extremes for the past and for 1973. Table 2 contains records of pumpage by most major ground-water users in the State in 1973. Numerous hydrographs are included in the report to illustrate changes in water levels. Most illustrations also show the effects of ground-water pumpage on water levels. Shown in summary form in the text are supplementary data on the yield of wells, pumpage, storage facilities, treatment, quality of water, and trends of ground-water levels for 1973 and for part of the previous record.