Progress report on wells penetrating artesian aquifers in South Dakota

Artesian aquifers underlie most of South Dakota and large areas in adjacent States. About 15,000 wells have been completed since 1881 in these aquifers within South Dakota. Many wells that originally flowed have ceased to flow and have been abandoned, and others have been equipped with pumps. Many thousands, however, continue to flow. This report presents data collected through June 1958 and includes records of 1,045 flowing and nonflowing artesian wells

Sufficient information is not available at present (1958) to permit a detailed description of the geologic and hydrologic properties of artesian aquifers or their correlation in South Dakota. The description of the various aquifers given in this report is, therefore, necessarily a general one.