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EVALUATION OF THE MAXEY‐EAKIN METHOD FOR ESTIMATING RECHARGE TO GROUND‐WATER BASINS IN NEVADA 1
Author(s) -
Avon Lizanne,
Durbin Timothy J.
Publication year - 1994
Publication title -
jawra journal of the american water resources association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.957
H-Index - 105
eISSN - 1752-1688
pISSN - 1093-474X
DOI - 10.1111/j.1752-1688.1994.tb03277.x
Subject(s) - groundwater recharge , hydrology (agriculture) , mathematics , statistics , groundwater , geology , geotechnical engineering , aquifer
AESTRACT An evaluation of the Maxey‐Eakin method for calculating recharge to ground‐water basins in Nevada was performed. The evaluation consisted of comparing Maxey‐Eakin estimates with independent estimates of recharge, and analyzing the nature of the differences between the groups of estimates. In the comparison with the Maxey‐Eakin estimates, two different groups of independent estimates were used: (1) 40 recharge estimates that were identified from water budgets contained in reports by the Nevada Department of Conservation and Natural Resources and (2) 27 recharge estimates that were identified from previous studies that used models. The results of the comparisons indicate generally good agreement between the Maxey‐Eakin estimates and both groups of independent estimates. To quantify this agreement, an analysis was conducted to estimate the uncertainty in the Maxey‐Eakin method. The analysis produced an upper bound on the standard deviation of the Maxey‐Eakin estimate for a given basin. For the group of 40 water‐budget estimates, the upper bound on the standard deviation for an individual basin is 4,800 acre‐ft/yr, and the corresponding coefficient of variation of the Maxey‐Eakin estimate is no greater than 44 percent. For the group of 27 model estimates, the upper bound on the standard deviation is 4,100 acre‐ft/yr, and the corresponding coefficient of variation is no greater than 24 percent.