Landslides, floods and sinkholes in a karst environment: the 1-6 September 2014 Gargano event, southern Italy Maria Elena Martinotti1, Luca Pisano2,6, Ivan Marchesini1, Mauro Rossi1, Silvia Peruccacci1, Maria Teresa Brunetti1, Massimo Melillo1, Giuseppe Amoruso3, Pierluigi Loiacono3, Carmela Vennari2,4, 5 Giovanna Vessia2,5, Maria Trabace3, Mario Parise2,7, Fausto Guzzetti1 1Consiglio Nazionale delle Ricerche, Istituto di Ricerca per la Protezione Idrogeologica, via Madonna Alta 126, I-06128 Perugia, Italy 2Consiglio Nazionale delle Ricerche, Istituto di Ricerca per la Protezione Idrogeologica, via Amendola 122, I-70126 Bari, Italy 10 3Regione Puglia, Servizio di Protezione Civile, Via delle Magnolie 6/8, I-70126 Modugno (Bari), Italy 4University of Naples “Federico II”, Naples, Italy 5University of Chieti-Pescara “Gabriele D’Annunzio”, Chieti, Italy 6University of Molise, Department of Biosciences and Territory, Contrada Fonte Lappone, Pesche (IS), Italy 7Present address: University “Aldo Moro”, Department of Earth and Environmental Sciences, Via Orabona 7, I-70126 Bari, 15 Italy Correspondence to: Maria Elena Martinotti (
[email protected]) Abstract. In karst environments, heavy rainfall is known to cause multiple geo-hydrological hazards, including inundations, flash floods, landslides, and sinkholes. We studied a period of intense rainfall from 1 to 6 September 2014 in the Gargano 20 Promontory, a karst area in Puglia, southern Italy. In the period, a sequence of torrential rainfall events caused severe damage, and claimed two fatalities. The amount and accuracy of the geographical and temporal information varied for the different hazards. The temporal information was most accurate for the inundation caused by a major river, less accurate for flash floods caused by minor torrents, and even less accurate for landslides.