A geomorphology-based semi-distributed watershed model
نویسندگان
چکیده
A semi-distributed watershed model was developed that conceptualizes the catchment as a cascade of nonlinear storage elements whose geometric dimensions are derived from the Horton±Strahler ordering of the stream network. Each storage element represents quick storm runo over land or in a channel segment. The physically based groundwater submodel is parameterized through the application of the Brutsaert±Nieber recession ̄ow analysis and it provides continuous base ̄ow separation. The model requires the calibration of seven parameters from a one year rainfall±runo record. It was tested on the Mahantango Creek watershed in the Susquehanna River basin, Pennsylvania. Ó 1999 Elsevier Science Ltd. All rights reserved.
منابع مشابه
Simulation of the catchments hydrological processes in arid, semi-arid and semi-humid areas
Hydrological processes and their spatial distribution directly are relevant to climate, topography, geology, and land use in the watershed. Therefore, use of a model whit integrity and high performance for simulating the process in deferent watersheds is very important. In this study was assessment performance of semi-distributed SWAT model in simulating hydrology processes in three watersheds ...
متن کاملComparison of EPM and geomorphology methods for erosion and sediment yield assessment in Kasilian Watershed, Mazandaran Province, Iran
Evaluation of Sediment yield in watershed scale is considered so important for implementation of soil conservation, watershed management, environment, dam construction and water resource management. Using empirical model is one of the approaches of evaluating Sediment yield. This research in Kasilian watershed evaluates Sediment yield by using Geomorphology method and EPM model with Arc View GI...
متن کاملEffectiveness of Check Dams in Management and Mitigation of Floods in Quran Gate of Shiraz with semi-Distributed Rainfall-Runoff Simulation
The flood on March 25, 2019 in the Quran Gate of Shiraz led to heavy human and financial losses. Studies of the current condition of the 25 km2 semi-urban watershed of the mentioned area were performed using the SCS semi-distributed rainfall-runoff model. Due to the big difference in average elevation of the Quran Gate watershed with synoptic and rain gauge stations in Shiraz, the precipitation...
متن کاملSimulation of Water Balance Components Using a Distributed Hydrological Model in Taleghan Watershed
Water changes information in the hydrological system, in time and space, as an environmental issue takes heed of managers and decision makers in watershed management and river engineering, which can be addressed by using spatially distributed modeling. In this study simulation of water balance components in Taleghan mountainous watershed is performed using the spatially distributed hydrological...
متن کاملRunoff and sediment yield modeling using WEPP in a semi-arid environment (Case study: Orazan Watershed)
Water erosion is a major environmental problem in many parts of the world. Majority of semi-arid countries are concerned because of their specific climate and soils sensitivity, but also because of the recent intensification of human activities and agricultural practices. Accurate estimation of water erosion for various land-use and climate scenarios is so an important key to define sustainable...
متن کامل