Premium
Comparison of Methods for Estimating Ground‐Water Pumpage for Irrigation
Author(s) -
Frenzel Steven A.
Publication year - 1985
Publication title -
groundwater
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.84
H-Index - 94
eISSN - 1745-6584
pISSN - 0017-467X
DOI - 10.1111/j.1745-6584.1985.tb02795.x
Subject(s) - groundwater , hydrology (agriculture) , irrigation , geology , environmental science , geotechnical engineering , ecology , biology
Ground‐water pumpage for irrigation was measured at 32 sites on the eastern Snake River Plain in southern Idaho during 1983. Pumpage at these sites also was estimated by three commonly used methods, and pumpage estimates were compared to measured values to determine the accuracy of each estimate. Statistical comparisons of estimated and metered pumpage using an F‐test showed that only estimates made using the instantaneous discharge method were not significantly different (α. = 0.01) from metered values. Pumpage estimates made using the power consumption method reflect variability in pumping efficiency among sites. Pumpage estimates made using the crop‐consumptive use method reflect variability in water‐management practices. Pumpage estimates made using the instantaneous discharge method reflect variability in discharges at each site during the irrigation season.