Hydrological and glaciological data were gathered in the watershed (1.37 km2) of the Antizana Glacier 15 (0.7 km2) in the periods 1997–2002 and 1995–2005, respectively. In addition, tracer experiments were carried out to analyse the flow through permeable morainic deposits located between the...

The city of Quito is located in the foothills of the Pichincha volcano, at an average altitude of 2 800 m. The whole metropolitan area is subject to recurrent serious flooding, landslides and mudslides, causing both obstruction and destruction of the city's drainage and sewerage system and...