Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 1 of 1
Full-Text Articles in Physical Sciences and Mathematics
Factors Influencing Ground-Water Recharge In The Eastern United States, Bernard T. Nolan, Richard W. Healy, Patrick E. Taber, Kimberlie Perkins, Kerie J. Hitt, David M. Wolock
Factors Influencing Ground-Water Recharge In The Eastern United States, Bernard T. Nolan, Richard W. Healy, Patrick E. Taber, Kimberlie Perkins, Kerie J. Hitt, David M. Wolock
United States Geological Survey: Staff Publications
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 …