Wells were eliminated from the list if no geologic log was available. This electronic report was subjected to the same review standard that applies to all U.S. Geological Survey reports. Reviewers were asked to check the topological consistency, tolerances, attribute frequencies and statistics, projection, and geographic extent. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. This data set consists of wells with geologic logs on file in the Rapid City, South Dakota, U.S. Geological Survey office as of June, 1998.
Point features present.
Information such as elevations of geologic formation tops, and hole depth were taken from well logs on-file at the U.S. Geological Survey office in Rapid City, South Dakota. 4.The locations and attributes were verified. There is a point attribute table associated with this data. This is a unique number given to each well. In these cases, the latitude or longitude is corrected, but the station identification number generally remains unchanged.