Advances in Geosciences www.adv-geosci.net 1680-7340 1680-7359 26 11th EGU Plinius Conference on Mediterranean Storms (2009) 2010 10.5194/adgeo-26-45-2010 http://www.adv-geosci.net/26/45/2010/ http://www.adv-geosci.net/26/45/2010/adgeo-26-45-2010.html http://www.adv-geosci.net/26/45/2010/adgeo-26-45-2010.pdf 45 48 2010-07-02 Reconstructing the 1874 Santa Tecla flash flood in the Ondara River (Ebro Basin, NE Spain) J. C. Balasch cbalasch@macs.udl.cat J. Tuset J. L. Ruiz-Bellet Department of Environmental and Soil Sciences, University of Lleida, Spain The <i>Santa Tecla</i> flash flood, a very heavy event occurred in Tàrrega (Catalonia, NE Iberian Peninsula) in 1874, was reconstructed with hydraulic and hydrological modelling tools. The hydrograph obtained in a first stage and the basin soil moisture information ultimately allowed the estimation of the range of the rainstorm magnitude which caused the flash flood. The reconstruction of historical floods has proved useful to improve the flood probability analysis, especially in ungauged basins. López-Bustos, A.: Tomando el pulso a las grandes crecidas de los ríos peninsulares, Revista de Obras P\'ublicas, 3190, 179–192, 1981. Pleyán de Porta, J: Efemérides leridanas recogidas y ordenadas, Institut d'Estudis Ilerdencs, Lleida, Spain, 1945. Salvadó, J.: Memoria de la inundación acaecida en la villa de Tárrega en la madrugada del dia 23 de Setiembre del año 1874, Est.\ Tip. Ramirez, Barcelona, Spain, 1875. Soil Conservation Service: Estimation of direct runoff from storm rainfall. Chapter 10. In Hydrology Natl. Eng. Handbook, Suppl. A, Section 4. USDA-SCS, Washington DC, 1985. Thorndycraft, V., Barriendos, M., Benito, G., Rico, M., and Casas, A.: The catastrophic floods of AD 1617 in Catalonia (northeast Spain) and their climatic context, Hydrol. Sci. J., 51(5), 899–912, 2006.