HR: 10:25h
AN: H32A-01    [Abstracts]
TI: Pumping Induced Interaction among Ground Water and Two Streams
AU: * Sun, D
EM: dsun@hsutx.edu
AF: Dongmin Sun, Department of Geology, Hardin-Simmons University, 2200 Hickory Street,POB 16164 , Abilene, TX 79698
AU: Zhan, H
EM: zhan@geo.tamu.edu
AF: Hongbin Zhan, Department of Geology & Geophysics, Texas A&M University , College Station, TX 77843-3115
AB: This study deals with the interaction of an aquifer with two parallel surface water bodies such as two streams or canals. Previous studies focus on one stream and an aquifer system and treat leakage from the surface water body as a volumetric source term in the governing equation, a hypothesis termed ``the Hantush's approximation''. In this paper, new closed-form analytical and semi-analytical solutions are acquired for the pumping induced dynamic interaction between two streams and ground water under two different cases with and without aquitards separating the streams from the aquifer. We solve the problem based on rigorous mass conservation requirement by maintaining continuity of flux and head along the aquitard-aquifer boundaries. The aquitard hydraulic conductivity is the most important factor controlling the stream depletion, followed by the aquitard thickness. Aquitard storages do not play significant roles unless the two streams are very close to each other or the well is very close to either stream. The results in this paper could provide guidance for well design and water management.
DE: 1800 HYDROLOGY
DE: 1828 Groundwater hydraulics
DE: 1829 Groundwater hydrology
DE: 1830 Groundwater/surface water interaction
DE: 1832 Groundwater transport
SC: Hydrology [H]
MN: Fall Meeting 2005