Analysing the effect of land-use/cover changes at sub-catchment levels on downstream flood peaks : A semi-distributed modelling approach with sparse data

Auteur(s) et Affiliation(s)



Description :
This paper aims to evaluate how varying degrees of land-use/cover (LULC) changes across sub-catchments affect a flood peak at the catchment outlet. The study site was the Konar catchment, a part of the upper Damodar Basin in eastern India. A HEC-HMS model was set up to simulate rainfall–runoff processes for two LULC scenarios three decades apart. The varying timing of flow convergence at different stream orders due to localised LULC changes makes it difficult to upscale the conventional land-use and runoff relationship, evident at the plot scale, to a large basin. It is highlighted that LULC changes at sub-catchments do not have direct impact on catchment flood peak, and that timing of tributary flow convergence is an important determinant of peak flow.


Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 2014, n°. 118, p. 28-40, nombre de pages : 13, Références bibliographiques : 1 p.

Date :
2014

Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena