RT Journal Article
T1 Estimating groundwater withdrawals in areas of intensive agricultural pumping in central Spain
A1 Martínez Santos, Pedro
A1 Martínez Alfaro, P.E.
AB Measuring groundwater extractions is central to adequate groundwater management in agricultural basins. Groundwater pumping records are often subject to considerable uncertainties, particularly in the case of arid and semiarid settings where irrigation is the most important water use. In most cases this is due to the difficulties involved in locating and monitoring all wells. We describe the estimation of groundwater pumping by coupling the water table fluctuation method with the groundwater balance equation. This is demonstrated through its application to the Mancha Occidental aquifer, Spain, an area subject to intensive pumping for irrigation since the early 1970s. A sensitivity analysis is conducted to evaluate the effect of relevant hydrogeological parameters, namely specific yield, as well as the most appropriate theoretical semivariogram, to calculate yearly storage variations within the system. Results are validated in the light of official pumping estimates.
PB Elsevier
SN 03783774
YR 2010
FD 2010
LK https://hdl.handle.net/20.500.14352/43553
UL https://hdl.handle.net/20.500.14352/43553
LA eng
NO European Union
DS Docta Complutense
RD 4 may 2024