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Water 2017, 9(10), 813; https://doi.org/10.3390/w9100813

The Impact of a Check Dam on Groundwater Recharge and Sedimentation in an Ephemeral Stream

1
Energy, Environment and Water Research Centre, The Cyprus Institute, 2121 Aglantzia, Nicosia, Cyprus
2
Dipartimento di Scienze della Terra “A. Desio”, Università degli Studi di Milano, 20133 Milan, Italy
3
UH Energy Research Park, University of Houston, Houston, TX 77204-0945, USA
*
Author to whom correspondence should be addressed.
Received: 18 September 2017 / Revised: 17 October 2017 / Accepted: 19 October 2017 / Published: 24 October 2017
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Abstract

Despite the widespread presence of groundwater recharge check dams, there are few studies that quantify their functionality. The objectives of this study are (i) to assess groundwater recharge in an ephemeral river with and without a check dam and (ii) to assess sediment build-up in the check-dam reservoir. Field campaigns were carried out to measure water flow, water depth, and check-dam topography to establish water volume, evaporation, outflow, and recharge relations, as well as sediment build-up. To quantify the groundwater recharge, a water-balance approach was applied at two locations: at the check dam reservoir area and at an 11 km long natural stretch of the river upstream. Prediction intervals were computed to assess the uncertainties of the results. During the four years of operation, the check dam (storage capacity of 25,000 m3) recharged the aquifer with an average of 3.1 million m3 of the 10.4 million m3 year−1 of streamflow (30%). The lower and upper uncertainty limits of the check dam recharge were 0.1 and 9.6 million m3 year−1, respectively. Recharge from the upstream stretch was 1.5 million m3 year−1. These results indicate that check dams are valuable structures for increasing groundwater resources in semi-arid regions. View Full-Text
Keywords: water balance model; discharge measurement; sedimentation; infiltration; managed aquifer recharge; estimation errors; Cyprus; Mediterranean Island water balance model; discharge measurement; sedimentation; infiltration; managed aquifer recharge; estimation errors; Cyprus; Mediterranean Island
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Djuma, H.; Bruggeman, A.; Camera, C.; Eliades, M.; Kostarelos, K. The Impact of a Check Dam on Groundwater Recharge and Sedimentation in an Ephemeral Stream. Water 2017, 9, 813.

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