caa a22 4500 445815140 CHVBK 20180317145225.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s10040-011-0717-2 doi (NATIONALLICENCE)springer-10.1007/s10040-011-0717-2 Steady flow rate to a partially penetrating well with seepage face in an unconfined aquifer [Elektronische Daten] [Siavash Behrooz-Koohenjani, Nozar Samani, Mazda Kompani-Zare] Flux constant à travers la surface de suintement d'un puits pénétrant imparfait dans un aquifère libre The flow rate to fully screened, partially penetrating wells in an unconfined aquifer is numerically simulated using MODFLOW 2000, taking into account the flow from the seepage face and decrease in saturated thickness of the aquifer towards the well. A simple three-step method is developed to find the top of the seepage face and hence the seepage-face length. The method is verified by comparing it with the results of previous predictive methods. The results show that the component of flow through the seepage face can supply a major portion of the total pumping rate. Variations in flow rate as a function of the penetration degree, elevation of the water level in the well and the distance to the far constant head boundary are investigated and expressed in terms of dimensionless curves and equations. These curves and equations can be used to design the degree of penetration for which the allowable steady pumping rate is attained for a given elevation of water level in the well. The designed degree of penetration or flow rate will assure the sustainability of the aquifer storage, and can be used as a management criterion for issuing drilling well permits by groundwater protection authorities. Springer-Verlag, 2011 Seepage face nationallicence Steady pumping rate nationallicence Numerical modeling nationallicence Over-abstraction nationallicence Groundwater protection nationallicence Behrooz-Koohenjani Siavash Department of Earth Sciences, College of Sciences, Shiraz University, 71454, Shiraz, Iran aut Samani Nozar Department of Earth Sciences, College of Sciences, Shiraz University, 71454, Shiraz, Iran aut Kompani-Zare Mazda Department of Desert Region Management, College of Agriculture, Shiraz University, 71454, Shiraz, Iran aut Hydrogeology Journal Springer-Verlag 19/4(2011-06-01), 811-821 1431-2174 19:4<811 2011 19 10040 https://doi.org/10.1007/s10040-011-0717-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10040-011-0717-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Behrooz-Koohenjani Siavash Department of Earth Sciences, College of Sciences, Shiraz University, 71454, Shiraz, Iran aut NATIONALLICENCE 700 1- Samani Nozar Department of Earth Sciences, College of Sciences, Shiraz University, 71454, Shiraz, Iran aut NATIONALLICENCE 700 1- Kompani-Zare Mazda Department of Desert Region Management, College of Agriculture, Shiraz University, 71454, Shiraz, Iran aut NATIONALLICENCE 773 0- Hydrogeology Journal Springer-Verlag 19/4(2011-06-01), 811-821 1431-2174 19:4<811 2011 19 10040 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer