Field experiments and simulations of infiltration-rate response to changes in hydrologic conditions for an artificial-recharge test basin near Oakes, southeastern North Dakota

Abstract

Infi 1 tration-rate response 3 Factors affecting infiltration-rate response Comparative index Methods and materials 11 Results and discussion Model development Model 1 (unsaturated flow through an impeding surface layer) 19 Mathematical approach 19 Surface filter-cake layer impedance development Simulation strategy 21 Model-parameter estimation Simulated infiltration-rate response (model 1) Water-table depth Model 2 (ground-water mound intersection of basin floor during early stages of basin operation) Simulated infiltration-rate response (model 2) Effect of basin geometry Effect of initial water-table depth Limiting factors Constant-drawdown approximation Ponded-depth effects on total recharge Conclusions References Glossary of terms ILLUSTRATIONS