Compilation and analyses of aquifer performance tests in eastern Kansas

Selected aquifer-test data from 36 counties in eastern Kansas were collected from numerous sources and publications in order to produce a documented compilation of aquifer tests in one report. Data were obtained chiefly from private consulting firms and from government agencies. Hydraulic properties determined included transmissivity, storage coefficient (where observation well was available), and in some cases hydraulic properties of a confining layer. The aquifers tested comprised three main types of rocks--consolidated rock deposits, glacial deposits, and alluvial deposits that include the ' Equus beds, ' an extensive alluvial deposit in south-central Kansas. The Theis recovery equation and the Cooper-Jacob modified nonequilibrium equation were the two principal solution methods used. Other methods used included the Theis nonequilibrium equation, the Hantush-Jacob equation for a leaky confined aquifer, Hantush 's modified leaky equation in which storage from a confining layer was considered, the Boulton 's delayed-yield equation. Additionally, a specific-capacity method of estimating transmissivity was used when only a single drawdown value was available. (USGS)