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Water 2019, 11(2), 276; https://doi.org/10.3390/w11020276

Using a Distributed Recharge Model to Quantify Recharge Processes in a Semi-Arid Karst Catchment: An Example from Wadi Natuf, West Bank

1
British Geological Survey, Keyworth, Nottinghamshire NG12 5GG, UK
2
British Geological Survey, Wallingford, Oxfordshire OX10 8BB, UK
*
Author to whom correspondence should be addressed.
Received: 24 December 2018 / Revised: 23 January 2019 / Accepted: 28 January 2019 / Published: 5 February 2019
(This article belongs to the Section Water Use and Scarcity)
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Abstract

The Wadi Natuf catchment is situated to the west of the Palestinian capital city of Ramallah which is in the West Bank. The catchment has been instrumented since 2003 to identify and examine recharge processes in semi-arid upland karst terrain, in which both direct and indirect recharge are important. The key recharge processes are direct rainfall recharge, and indirect recharge via wadis including the lateral routing of potential recharge in the unsaturated zone to springs which supply the wadis. A conceptual model describing these processes was developed. A distributed recharge model was then employed to test this conceptual model and to calculate recharge. A semi-arid wetting threshold method, based on local field experiments was used for recharge estimation. The model was calibrated by comparing simulated wadi flows to those recorded during a relatively short historical event. The study demonstrates that short-term monitoring can enable a sensible validation of a conceptual model leading to the estimation of recharge. Confidence in the model simulation requires further field work to strengthen the understanding of processes taking place in semi-arid climates and karstic flow environments. View Full-Text
Keywords: recharge; model; object-oriented; West Bank; Wadi Natuf; karst recharge; model; object-oriented; West Bank; Wadi Natuf; karst
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Mansour, M.; Peach, D.; Robins, N.; Hughes, A. Using a Distributed Recharge Model to Quantify Recharge Processes in a Semi-Arid Karst Catchment: An Example from Wadi Natuf, West Bank. Water 2019, 11, 276.

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