Quantification and Regionalization of the Interaction between the Doumen Reservoir and Regional Groundwater in the Urban Plains of Northwest China

Groundwater and artificial reservoirs are in a continuous dynamic interaction that can affect not only water quantity but the quality. In this paper, taking DR (Doumen Reservoir) as an example, level changes between DRTS Reservoir Test Section) groundwater were discussed, quality used by SFE (single-factor evaluation) WQI (water index) method analyzed. A coupling model is presented to quantify leakage impact range budget regionalize of surface on regional The results show dynamics reservoir highly consistent, with cross-correlation coefficient 0.85 lag time about 7 days. recharges increase-decrease-stationary wave potential. After 3 years operation DR, still recharged, will rise obviously, maximum 8.5 m. amount recharged always 0. NH3-N, COD have varying degrees impact, both which mainly pollution halo around North Lake. provide support for resources management environmental protection urban plain reservoirs.