A GIS-based urban and peri-urban landscape representation toolbox for hydrological distributed modeling. (May 2017)

• Record Type: Journal Article
• Authors: Sanzana, P.; Gironás, J.; Braud, I.; Branger, F.; Rodriguez, F.; Vargas, X.; Hitschfeld, N.; Muñoz, J.F.; Vicuña, S.; Mejía, A.; Jankowfsky, S.
• Is Part Of: Environmental modelling & software. Volume 91(2017)
• Page Start: 168
• Page End: 185
• Publication Date: 2017-05
• Subjects: Peri-urban catchments -- Hydrological Response Units -- Urban Hydrological Elements -- Drainage extraction -- Computer-assisted mesh generation; Environmental monitoring -- Computer programs -- Periodicals; Ecology -- Computer simulation -- Periodicals; Digital computer simulation -- Periodicals; Computer software -- Periodicals; Environmental Monitoring -- Periodicals; Computer Simulation -- Periodicals; Environnement -- Surveillance -- Logiciels -- Périodiques; Écologie -- Simulation, Méthodes de -- Périodiques; Simulation par ordinateur -- Périodiques; Logiciels -- Périodiques; Computer software; Digital computer simulation; Ecology -- Computer simulation; Environmental monitoring -- Computer programs; Periodicals; Electronic journals; 363.70015118
• DOI: 10.1016/j.envsoft.2017.01.022
• Languages: English
• ISSNs: 1364-8152

Abstract

Abstract: Flowpaths are significantly affected by land use change and engineered elements across urban catchments. Conventional GIS-based tools for extracting drainage networks were not developed for urban terrains. This work presents Geo-PUMMA, a GIS toolbox to generate vectorial meshes for terrain representation in distributed hydrological modeling, and to extract drainage patterns in urban and peri-urban catchments. Geo-PUMMA generates well-shaped Hydrological Response Units (HRUs) and Urban Hydrological Elements (UHEs). The toolbox was used in peri-urban catchments of Chile and France to generate three model meshes with different levels of treatment, and extract and compare their corresponding drainage networks. A recommended mesh is identified, which replicates the main morphological and hydrological features of the reference drainage network, and is able to preserve features at small to medium spatial scales (∼80–150 m). Overall Geo-PUMMA can be used to represent the terrain in distributed hydrological modeling applied to urban and peri-urban scales. Highlights: Geo-PUMMA is a GIS toolbox for terrain representation for hydrological modeling. Hydrological Response Units and Urban Hydrological Elements define peri-urban areas. Three model meshes with different levels of treatment were produced and compared. Flowpaths are extracted from a mesh replicating hydro- and geomorphological features.