2024-03-28T12:52:54Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/162962020-11-04T13:14:49Zcom_10261_72com_10261_6col_10261_325
Effectiveness and geomorphological impacts of check dams for soil erosion control in a semiarid Mediterranean catchment: El Cárcavo (Murcia, Spain)
Castillo Sánchez, Victor Manuel
Moscha, W. M.
Conesa García, C.
González Barberá, Gonzalo
Navarro-Cano, J. A.
López-Bermúdez, F.
Gobierno de la Región de Murcia
European Commission
Fundación Instituto Euromediterráneo del Agua
Check dams
Ephemeral streams
Fluvial erosion
Sedimentation
Land degradation
The construction of transverse structures (check dams) is a widely used method in Spanish Mediterranean areas to stabilise gullies and ephemeral streams, to reduce channel incision and to prevent sediment deposition downstream. The effectiveness of check dams and their effects on the morphology of ephemeral channels (ramblas) were investigated in a semiarid, highly degraded catchment. In the study area, 36 dams were surveyed, of which 29 were filled up with sediments, 2 had been destroyed and only 5 had still not completely filled with sediments. The streams above the dams held sediments, which resulted in a decrease in the longitudinal gradient. Field observations of changes in the cross-sectional shape of the stream channel, the composition of channel bed material, and bankfull stage measurements indicated that the dams cause erosion downstream. The amount of sediments stored by the dams was found to be higher than the amount of eroded material in the downstream reaches of the dam.
The research was carried out as part of the projects “Seguimiento y Evaluación de los efectos sobre el Medio Natural de la Sequía y los Procesos Erosivos. 2: Seguimiento de las actuaciones de lucha contra la desertificación”, funded by Comunidad Autónoma de la Región de Murcia e INTERREG IIC Programme and “Respuesta Hidrológica y Geomorfológica de los Sistemas Fluvio-Torrenciales afectados por proyectos de Restauración Hidrológico-Forestal en cuencas semiáridas del Sureste Peninsular” funded by Fundación Instituto Euromediterráneo de Hidrotecnia.
Peer reviewed
2009-08-26T11:24:12Z
2009-08-26T11:24:12Z
2007-08-01
artículo
http://purl.org/coar/resource_type/c_6501
Catena 70(3): 416-427 (2007)
0341-8162
http://hdl.handle.net/10261/16296
10.1016/j.catena.2006.11.009
http://dx.doi.org/10.13039/501100000780
http://dx.doi.org/10.13039/501100009569
http://dx.doi.org/10.1016/j.catena.2006.11.009
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Elsevier