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Mesoscale Mapping of Sediment Source Hotspots for Dam Sediment Management in Data-Sparse Semi-Arid Catchments

1
Research Group Ecohydrology and Landscape Evaluation, Technical University Berlin, 10587 Berlin, Germany
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Institute of Environmental Science and Geography, University of Potsdam, 14467 Potsdam, Germany
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Avaye Ab Shabnam Consulting Engineering Company, 6133883441 Ahvaz, Iran
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Dam Complex of Upper Atbara, 11605 Khartoum, Sudan
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Khuzestan Water and Power Authority, 61355-137 Ahvaz, Iran
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Iran Water Resources Management Co., 14896 Tehran, Iran
*
Author to whom correspondence should be addressed.
Water 2020, 12(2), 396; https://doi.org/10.3390/w12020396
Received: 17 December 2019 / Revised: 18 January 2020 / Accepted: 20 January 2020 / Published: 1 February 2020
(This article belongs to the Section Water Resources Management, Policy and Governance)
Land degradation and water availability in semi-arid regions are interdependent challenges for management that are influenced by climatic and anthropogenic changes. Erosion and high sediment loads in rivers cause reservoir siltation and decrease storage capacity, which pose risk on water security for citizens, agriculture, and industry. In regions where resources for management are limited, identifying spatial-temporal variability of sediment sources is crucial to decrease siltation. Despite widespread availability of rigorous methods, approaches simplifying spatial and temporal variability of erosion are often inappropriately applied to very data sparse semi-arid regions. In this work, we review existing approaches for mapping erosional hotspots, and provide an example of spatial-temporal mapping approach in two case study regions. The barriers limiting data availability and their effects on erosion mapping methods, their validation, and resulting prioritization of leverage management areas are discussed. View Full-Text
Keywords: reservoir siltation; water security; water management; data sharing; spatial-temporal; erosion hotspots; mapping; global datasets; mesoscale; leverage areas reservoir siltation; water security; water management; data sharing; spatial-temporal; erosion hotspots; mapping; global datasets; mesoscale; leverage areas
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Smetanová, A.; Müller, A.; Zargar, M.; Suleiman, M.A.; Gholami, F.R.; Mousavi, M. Mesoscale Mapping of Sediment Source Hotspots for Dam Sediment Management in Data-Sparse Semi-Arid Catchments. Water 2020, 12, 396.

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