Metodología de Selección y Diseño Técnico de Sistemas Urbanos de Drenaje Sostenible (SUDS)

Abstract

This research develops a methodology for the selection and pre-design of Sustainable Urban Drainage Systems (SUDS) applied to three public spaces in Tunja: Los Muiscas Park (1.27 ha), Las Quintas Park (1.94 ha), and Pinzón Park (0.56 ha). Hydrological, hydraulic, and spatial conditions were characterized using contributing areas, land cover, slope, hydraulic length, and time of concentration. Peak runoff was estimated with the Rational Method and the Kirpich equation, while the treatment volume was determined independently by applying a 10 mm treatment depth to the effective impervious area. A multicriteria matrix supported technology selection, followed by hydraulic pre-design of rain gardens, vegetated swales, permeable pavements, and stormwater tree pits. The results defined three-technology combinations for each park and showed, under the adopted assumptions, compatibility between storage capacity and assigned treatment volumes. Sensitivity analysis using treatment depths of 12.5 and 15 mm showed the lowest capacity-to-required-volume relationship for Los Muiscas under the 15 mm scenario. The study is conceptual and requires infiltration tests, geotechnical characterization, and detailed engineering studies before implementation. The proposed contribution is a partial source-control measure rather than an integral control of urban runoff.