Articles | Volume 16, issue 10
https://doi.org/10.5194/nhess-16-2273-2016
https://doi.org/10.5194/nhess-16-2273-2016
Research article
 | 
24 Oct 2016
Research article |  | 24 Oct 2016

Towards an increase of flash flood geomorphic effects due to gravel mining and ground subsidence in Nogalte stream (Murcia, SE Spain)

Jose Antonio Ortega-Becerril, Guillermina Garzón, Marta Béjar-Pizarro, and Jose Jesús Martínez-Díaz

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Short summary
Human-induced changes in semi-arid regions could be responsible for modifications in ephemeral streams. Our results confirm that in-channel gravel mining and aquifer overexploitation over the last 50 years in the study area have changed the natural stability of the Nogalte stream and its geomorphic parameters. A comparison between flood events of the past and a recent one recorded in 2012 reveals changes and a new flooding pattern with a transition from an alluvial to a confined fluvial pattern.
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