RT Journal Article
T1 Flood Hazard Management in Public Mountain Recreation Areas vs. Ungauged Fluvial Basins. Case Study of the Caldera de Taburiente National Park, Canary Islands (Spain)
A1 Garrote Revilla, Julio
A1 Díez Herrero, Andrés
A1 Bodoque del Pozo, José María
A1 Perucha, M.A.
A1 Mayer, Pablo L.
AB Las Angustias River is an ungauged stream in the Caldera de Taburiente National Park (Spain), where frequent intense flash-flood events occur. The aim of this research is to analyze the flood hazard at the Playa de Taburiente. Based on the limited information available (short time-series of daily precipitation), a statistical frequency analysis of 24 h rainfall was completed and the precipitation results were transformed into surface runoff. To determine if the model underestimates the flows that are generated in the basin, the dendro-geomorphological information available was used to calibrate results. The results of the HMS model were significantly lower. At this point, both the rainfall data and the rainfall-runoff model were re-analyzed to maximize the rainfall intensity values and the runoff generated (increasing the CN value for the basin). For the 1997 flood event, a 1250 m3·s−1 flood minimizes the RMSE for the disturbed tree sample; this flow value also clearly exceeds any peak flow derived from the rainfall-runoff analysis. It is only when rainfall intensity and surface runoff are maximized that the peak flows obtained approximate those associated with dendro-geomorphological data. The results highlight the difficulties of flood hazard management in ungauged torrential basins in mountain recreational areas (such as National Parks). Thus, in the absence of flow records, when considering the maximum rainfall intensity scenario may be a useful and effective tool for flood risk management.
PB MDPI
SN 2076-3263
YR 2017
FD 2017-12-31
LK https://hdl.handle.net/20.500.14352/18491
UL https://hdl.handle.net/20.500.14352/18491
LA eng
NO Ministerio de Economía y Competitividad (MINECO)
NO Ministerio de Agricultura, Alimentación y Medio Ambiente
DS Docta Complutense
RD 9 abr 2025