Distributed-Framework Basin Modeling System: II. Hydrologic Modeling System

Abstract

A distributed-framework hydrologic modeling system (DF-HMS) is a primary and significant component of a distributed-framework basin modeling system (DFBMS), which simulates the hydrological processes and responses after rainfall at the basin scale, especially for non-homogenous basins. The DFBMS consists of 11 hydrological feature units (HFUs) involving vertical and horizontal geographic areas in a basin. Appropriate hydrologic or hydraulic methods are adopted for different HFUs to simulate corresponding hydrological processes. The digital basin generation model is first developed to determine the essential information for hydrologic and hydraulic simulation. This paper mainly describes two significant HFUs contained in the DF-HMS for hydrologic modeling: Hilly sub-watershed and plain overland flow HFUs. A typical hilly area application case study in the Three Gorges area is introduced, which demonstrates DF-HMS’s good performance in comparison with the observed streamflow at catchment outlets.

Simulation and Application of Water Environment in Highly Urbanized Areas: A Case Study in Taihu Lake Basin

“…This information serves as a known input condition for the equations of the water quality model. Corresponding to the coupling of the water quantity model [33,34], the coupling of the water quality model encompasses the integration between the one-dimensional river and the zero-dimensional and two-dimensional lakes, reservoirs, flood plains, and paddy fields. The nodal concen-tration stands as a pivotal element in the water quality model coupling.…”

Land-use changes and precipitation cycles to understand hydrodynamic responses in semiarid Mediterranean karstic watersheds

“…Finally, the total extension of the Guadalest watershed was subdivided into 12 different sub-basins (Fig. 2), trying to consider the drainage network previously obtained from the DEM and seeking the highest homogeneity in terms of runoff generation within each sub-basin, as stated in the investigations published by Mahmood and Jia (2019), Nerantzaki et al (2020) and Chen et al (2021). For each sub-basin, characteristics of surface, length and slope of the main channels within the drainage network, as well as concentration-time land-use changes, soil and vegetation types were determined (Table 2).…”

“…Likewise, based on available information of the assessed watershed (CHJ, 2013;DPA-IGME, 2015) and related studies areas (Candela et al, 2012;Conesa-García et al, 2017;Đukic and Erić, 2021), baseflow was predicted through the constant monthly baseflow method (Charley et al, 1995;Chen et al, 2021;Mo et al, 2021).…”

“…Sensitivity and uncertainly analysis (calibration and validation) were performed at a daily scale using the observed flow data from the 8015 stream gauge station to optimize initial values of hydrologic parameters from the HEC-HMS model. This station is located at the outlet of the Guadalest watershed and contains valuable data from 1967 to 2018 (CEDEX, 2021), which complete hydrogram can be found in CHJ ( 2013 The automatic calibration (in this case deterministic optimization) was focused on the most key parameters of the HEC-HMS model (Fleming and Brauer, 2018) according to the objectives of the present study jointly with findings provided by scientific studies performed in other catchments with similar features (Candela et al, 2012;Azmat et al, 2018;Ferreira et al, 2020;Đukic and Erić, 2021;Chen et al, 2021). Thus, the selected parameter set was composed by: i) the curve number (CN); ii) initial abstraction; iii) lag time recession constant; iv) ratio to peak; v) canopy maximum storage; vi) crop coefficient; vii) soil storage; viii) soil percolation; and, ix) groundwater 1 and 2 percolation rates.…”

“…This implementation is more common in detrital environments, while modeling hydrological processes in other conditions, such as karstic areas, remains limited currently (e.g. Moriasi et al, 2007;Candela et al, 2012;Azmat et al, 2018;Robineau et al, 2018;Ollivier et al, 2020;Đukic and Erić, 2021;Chen et al, 2021). The Hydrologic Engineering Center-Hydrologic Modeling System (HEC-HMS) model (Charley et al, 1995;Fleming and Brauer, 2018) is another appropriate well-known alternative for analysing the hydrological response sequentially and to examine the hydrological impact of the identified land-use changes (Gao et al, 2020;Fleming and Brauer, 2018;Mahmood and Jia, 2019).…”