Mauricio F. VillazónL. Trujillo Guzmán2026-03-222026-03-22202510.23881/idupbo.024.2-2ihttps://doi.org/10.23881/idupbo.024.2-2ihttps://andeanlibrary.org/handle/123456789/77702The Rocha River basin is one of the most important basins in the department of Cochabamba because it is home to approximately 76% of the department's population. The Rocha River is an urban ecosystem because it is located within the city. Due to its rugged topographic relief, it generates a large amount of water during the rainy season. On the other hand, during the dry season, this river has a small flow from liquid discharges, domestic and/or industrial wastewater. The objective of this work was to obtain continuous series of flow rates in 3 sections of the Rocha River at a sub-hourly level for the period 15-Dec-2017 to 27-Apr-2023 by collecting, processing and, where necessary, making the necessary corrections to the measured levels to later convert them into flow rates by means of H-Q curves. Once the flow rates were obtained, these together with the precipitation were used to calculate the runoff coefficients of the 3 sub-basins of study (El Abra, Cajón bridge and Pico de Loro bridge), obtaining values of 4.5%, 5.4% and 19% respectively. The results of an empirical extremes analysis for a return period of 5 years with flows measured every 15 min are also presented, obtaining flows of up to 16 m3/sec for the El Abra station, 52 m3/sec for the Puente Cajón station and 64 m3/sec for the Pico de Loro station.enGeologyHumanitiesarticle