Publication Details

Category Text Publication
Reference Category Journals
DOI 10.1623/hysj.49.3.495.54348
Title (Primary) Physically-based hydrological modelling for non-point phosphorus transport in small and medium-sized river basins
Author Lindenschmidt, K.E.; Ollesch, G.; Rode, M.
Source Titel Hydrological Sciences Journal-Journal des Sciences Hydrologiques
Year 2004
Department ASAM; BOPHY; HYMOD; LFB
Volume 49
Issue 3
Page From 495
Page To 510
Language englisch
Abstract Current research suggests that strategies to control sediment and phosphorus loss from non-point sources should focus on different runoff components and their spatial and temporal variations within the river basin. This is a prerequisite for determining effective management measures for reducing diffuse source pollution. Therefore, non-point source models, especially in humid climatic regions, should consider variable hydrologically active source areas. These models should be able to consider runoff generation by saturated overland flow, as well as Hortonian overland flow. A combination of the hydrological model WaSiM-ETH and the erosion and P-transport model AGNPS was chosen for this study. The models were run in the WaSiM runoff generation mode (Green & Ampt/TOPMODEL or Richards equation approach) and the SCS curve number mode to assess the effect of these different runoff calculation procedures on the dissolved phosphorus yield. A small and a medium-sized river basin, of the area of 1.44 and 128.9 km2, respectively, in central Germany were selected for the investigation. The results show that the WaSiM–AGNPS coupling produces more accurate results than the SCS curve number method. For the spatial distribution, the more physically-based model approach computed a much more realistic distribution of water and phosphorus yield-producing areas.
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=4312
Lindenschmidt, K.E., Ollesch, G., Rode, M. (2004):
Physically-based hydrological modelling for non-point phosphorus transport in small and medium-sized river basins
Hydrol. Sci. J.-J. Sci. Hydrol. 49 (3), 495 - 510 10.1623/hysj.49.3.495.54348