Check dams and sediment control: final results of a case study in the upper Corneja River (Central Spain)

Check dams and sediment control: final results of a case study in the upper Corneja River... Purpose The sediment yield and erosion rate in an area can be estimated by calculating the volume of sediment retained by check dams. However, results can show unrealistic and imprecise conclusions if the sediment volume is not measured −1 −1 accurately, as tolerable erosion rates are usually below 10 t ha year . Materials and methods Our previous research developed a topographic method (the Sections Method) for measuring the sediment wedges created by check dams and the sediment yield with a high degree of precision to avoid the aforemen- tioned problem. Until now, however, it had only been tested for a few check dams. Here, we present a final and complete analysis applying this method to 113 check dams in a granitic restored area in the upper basin of the Corneja River (Central Spain), under a continental Mediterranean climate, to estimate an accurate mean erosion rate over 50 years, as well as the downstream influence of the check dams. Results and discussion Our results show that the check dams trapped 5365.93 m sediment, which represents a sediment −1 −1 −1 −1 export of 0.096 t ha year and a total sediment yield of 5.6 t ha year . These http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Soils and Sediments Springer Journals

Check dams and sediment control: final results of a case study in the upper Corneja River (Central Spain)

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Publisher
Springer Berlin Heidelberg
Copyright
Copyright © 2018 by Springer-Verlag GmbH Germany, part of Springer Nature
Subject
Environment; Soil Science & Conservation; Environment, general; Environmental Physics
ISSN
1439-0108
eISSN
1614-7480
D.O.I.
10.1007/s11368-018-2042-z
Publisher site
See Article on Publisher Site

Abstract

Purpose The sediment yield and erosion rate in an area can be estimated by calculating the volume of sediment retained by check dams. However, results can show unrealistic and imprecise conclusions if the sediment volume is not measured −1 −1 accurately, as tolerable erosion rates are usually below 10 t ha year . Materials and methods Our previous research developed a topographic method (the Sections Method) for measuring the sediment wedges created by check dams and the sediment yield with a high degree of precision to avoid the aforemen- tioned problem. Until now, however, it had only been tested for a few check dams. Here, we present a final and complete analysis applying this method to 113 check dams in a granitic restored area in the upper basin of the Corneja River (Central Spain), under a continental Mediterranean climate, to estimate an accurate mean erosion rate over 50 years, as well as the downstream influence of the check dams. Results and discussion Our results show that the check dams trapped 5365.93 m sediment, which represents a sediment −1 −1 −1 −1 export of 0.096 t ha year and a total sediment yield of 5.6 t ha year . These

Journal

Journal of Soils and SedimentsSpringer Journals

Published: Jun 1, 2018

References

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