Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Rudolf the red-nosed reindeer gives Santa Claus's a demonstration of his flight technique at Sesame Place in Langhorne, Pa."

Purpose: This investigation by the U.S. Geological Survey, in cooperation with the Warminster Municipal Authority, has three purposes: (1) to determine how urbanization has affected ground water and low streamflow in Warminster Township and parts of the surrounding municipalities; (2) to describe the hydrologic system; and (3) to assess the availability of ground water.