Selected Procedures for Analyzing Aquifer Test Data

of the illustrations have been simplified to make it easier to convey important ideas that can be readily understood and compared with phenomena observed by operators of ground water supply developments. As is well known, studies of ground water resources are continually being made by the Ground Water Branch of the U.S. Geological Survey in cooperation with many state and local agencies throughout the country. This work is directed toward locating ground water reservoirs and learning as much as possible about them, including their extent and their ability to store and transmit water. Examination and comparison of the methods used in making these studies would reveal no completely stereotyped pattern of procedure. In fact, each study would appear to involve its own peculiar combination of geologic and hydrologie factors requiring individual methods of analysis. Over the years, therefore, the USGS has developed quite a large store of qualitative and quantitative geologic and hydrologie methods of study. In this paper, it will be possible to demonstrate only a select few of the many methods used in determining the hydrologie characteristics of ground water reservoirs.