Factors influencing ground-water recharge in the eastern United States
January 1, 2007
Ground-water recharge estimates for selected locations in the eastern half of the United States were obtained by Darcian and chloride-tracer methods and compared using statistical analyses. Recharge estimates derived from unsaturated-zone (RUZC) and saturated-zone (RSZC) chloride mass balance methods are less variable (interquartile ranges or IQRs are 9.5 and 16.1 cm/yr, respectively) and more strongly correlated with climatic, hydrologic, land use, and sediment variables than Darcian estimates (IQR = 22.8 cm/yr). The unit-gradient Darcian estimates are a nonlinear function of moisture content and also reflect the uncertainty of pedotransfer functions used to estimate hydraulic parameters. Significance level is
Citation Information
| Publication Year | 2007 |
|---|---|
| Title | Factors influencing ground-water recharge in the eastern United States |
| DOI | 10.1016/j.jhydrol.2006.06.029 |
| Authors | B. Nolan, R. Healy, P.E. Taber, K. Perkins, K.J. Hitt, D.M. Wolock |
| Publication Type | Article |
| Publication Subtype | Journal Article |
| Series Title | Journal of Hydrology |
| Index ID | 70032865 |
| Record Source | USGS Publications Warehouse |