Development and application of a modeling approach for surface water and groundwater interaction

Investigation of the interaction of surface water (SW) and groundwater (GW) is critical in order to determine the effects of best management practices (BMPs) on the entire system of water resources. The objective of this research was to develop a modeling system for considering SW-GW interactions and to demonstrate the applicability of the developed system. A linked modeling approach was selected to consider SW-GW interaction. The dual-simulation scheme was developed to consider different time scales between a newly developed surface model: Dynamic Agricultural Non-point Source Assessment Tool (DANSAT), and existing groundwater models; a three-dimensional finite-difference groundwater flow model (MODFLOW) and a modular three-dimensional transport model (MT3D). A distributed and physically based DANSAT predicts the movement of water and pesticides in runoff and in leachate at a watershed scale. MODFLOW and MT3D simulate groundwater and pesticide movement in the saturated zone. Only the hydrology component of the linked system was evaluated on the QN2 subwatershed in the Nomini Creek watershed located in the Coastal Plain of Virginia mainly due to lack of observed data for MT3D calibration. The same spatial scale was used for both surface and groundwater models while different time scales were used because surface runoff occurs more quickly than groundwater flow. DANSAT and MODFLOW were separately calibrated using the integrated GW approach which uses own lumped baseflow components in DANSAT, and using the steady-state mode in MODFLOW, respectively. Then the linked system was applied to QN2 based on the parameters selected for DANSAT and MODFLOW to simulate time-dependent interactions on the entire system. The linked approach was better than the integrated approach for predicting the temporal trends of monthly runoff by improving the monthly Nash-Sutcliffe efficiency index from 0.53 to 0.60. The proposed linked approach will be useful for evaluating the impacts of agricultural BMPs on the entire SW-GW system by providing spatial distribution and temporal changes in groundwater table elevation and enhancing the reliability of calibrated parameter sets.

[1]  R. Gilliom,et al.  Occurrence of Pesticides in Shallow Groundwater of the United States: Initial Results from the National Water-Quality Assessment Program , 1998 .

[2]  J. K. Koelliker,et al.  Integrated numerical modeling for basin-wide water management: The case of the Rattlesnake Creek basin in south-central Kansas , 1999 .

[3]  J. Barbash.  Pesticides in ground water , 1996 .

[4]  Marios Sophocleous,et al.  Methodology and application of combined watershed and ground-water models in Kansas , 2000 .

[5]  A. B. Bottcher,et al.  FIELD TESTING AND COMPARISON OF THE PRZM AND GLEAMS MODELS , 1991 .

[6]  Shiv O. Prasher,et al.  LINKFLOW, A WATER FLOW COMPUTER MODEL FOR WATER TABLE MANAGEMENT: PART 2. MODEL VERIFICATION , 1997 .

[7]  N. Nikolaidis,et al.  MODELING OF NONPOINT SOURCE POLLUTION OF NITROGEN AT THE WATERSHED SCALE 1 , 1998 .

[8]  W. J. Cogger,et al.  Water quality inventory , 1975 .

[9]  David Goldberg,et al.  A model for simulation of flow in singular and interconnected channels , 1981 .

[10]  Kurt D. Pennell,et al.  Evaluation of Five Simulation Models for Predicting Aldicarb and Bromide Behavior Under Field Conditions , 1990 .

[11]  Jae-Pil Cho,et al.  Simulation of land use impacts on groundwater levels and streamflow in a Virginia watershed , 2009 .

[12]  Saied Mostaghimi,et al.  MOVEMENT OF FIELD-APPLIED ATRAZINE, METOLACHLOR, AND BROMIDE IN A SANDY LOAM SOIL , 1997 .

[13]  Jae-Pil Cho,et al.  Dynamic agricultural non-point source assessment tool (DANSAT): Model application , 2009 .

[14]  Nancy L. Barber,et al.  Estimated use of water in the United States in 2005 , 2009 .

[15]  Jae-Pil Cho,et al.  Evaluating cell-based components of DANSAT for predicting surface and subsurface transport of pesticides , 2009 .

[16]  E. Swain.  Implementation and Use of Direct‐Flow Connections in a Coupled Ground‐Water and Surface‐Water Model , 1994 .

[17]  J. Nash,et al.  River flow forecasting through conceptual models part I — A discussion of principles☆ , 1970 .

[18]  Arlen W. Harbaugh,et al.  A modular three-dimensional finite-difference ground-water flow model , 1984 .

[19]  C. Jayatilaka,et al.  Simulation of water flow on irrigation bay scale with MIKE-SHE , 1998 .

[20]  K. Jensen,et al.  Distributed hydrological modelling of the Senegal River Basin — model construction and validation , 2001 .

[21]  Zhongbo Yu,et al.  APPLICATION OF AN INTEGRATED BASIN‐SCALE HYDROLOGIC MODEL TO SIMULATE SURFACE‐WATER AND GROUND‐WATER INTERACTIONS 1 , 1998 .

[22]  Peter M. Allen,et al.  Automated Base Flow Separation and Recession Analysis Techniques , 1995 .

[23]  Shiv O. Prasher,et al.  LINKFLOW, a water flow computer model for water table management. I. Model development , 1995 .

[24]  Saied Mostaghimi,et al.  Dynamic agricultural non-point source assessment tool (DANSAT): model development. , 2009 .

[25]  C. Zheng.  A Modular Three-Dimensional Transport Model for Simulation of Advection, Dispersion and Chemical Reaction of Contaminants in Groundwater Systems , 1990 .

[26]  Nancy L. Barber,et al.  Estimated Use of Water in the United States in 2000 , 2004 .

[27]  S. Prasher,et al.  LINKFLOW, A WATER FLOW COMPUTER MODEL FOR WATER TABLE MANAGEMENT: PART L MODEL DEVELOPMENT , 2009 .

[28]  Jae-Pil Cho.  A comprehensive modeling approach for BMP impact assessment considering surface and ground water interaction , 2007 .

[29]  Dennis L. Corwin,et al.  Applications of GIS to the Modeling of NonPoint Source Pollutants in the Vadose Zone: A Conference Overview , 1996 .

[30]  J. C. Kammerer,et al.  Estimated use of water in the United States, 1960 , 1961 .