ABSTRACT
The short history of quantitative groundwater hydrology methods presented by Bredehoeft is relevant to the history of groundwater engineering. This chapter describes radial flow towards production wells under nonleaky artesian, leaky artesian, water table, and fractured rock aquifer conditions and presents the general principles of groundwater flow. Fracture-trace analysis has been successfully used to locate high yielding production wells and groundwater monitoring well sites. An artesian aquifer is one in which groundwater is confined under pressure by overlying and underlying aquitards or aquicludes and water levels in wells rise above the aquifer top. In streamflow hydrograph separation methods, total streamflow is separated into its two major components, surface and groundwater runoff. Groundwater runoff is the portion of natural recharge that is not removed by evapotranspiration and constitutes the lower limit of natural recharge. Groundwater quality is determined by the solutes and gases dissolved in the water and the matter suspended in and floating on the water.
