Application of MIKE SHE modelling system to set up a detailed water balance computation

Abstract

Estimation of total water balance is a substantial issue for watershed modelling in order to simulate the major components of the hydrological cycle to determine the stress of different anthropogenic activities on the available water resources within a catchment. In this context, the fully distributed physically based MIKE SHE modelling system was used to simulate the individual hydrological components of the total water balance for the Paya Indah Wetlands (PIW) watershed in the west of Peninsular Malaysia. Results reveal that the overall water balance is predominantly controlled by climate variables. Application of the model to the PIW watershed provides detailed estimation of the total water balance for a first‐order catchment in which actual evapotranspiration (ET) represents approximately 65 and 58%, while overland flow (OL) to the PIW lake system represents 12.38 and 12.3% of the total rainfall during the calibration and validation periods, respectively. The difference of the inflow and outflow was taken as storage in depth. Overall, the model gives a reasonable output of total error of less than 1% of the total rainfall, which in turn indicates that the interaction among components is satisfactorily sustained.

Suitability of a Coupled Hydrologic and Hydraulic Model to Simulate Surface Water and Groundwater Hydrology in a Typical North-Eastern Germany Lowland Catchment

“…In case of temporal discretization, the computational time steps were chosen in such a way that OL-flow computational time step is always less or equal to the UZ time step, while the UZ time step is always less or equal to the SZ time step. During the temporal discretization, selected time steps are always critical for minimizing the water balance errors [3]. Aquifer BC used in this study are explained in Figure 6; zero flux BC was selected where lateral flows were expected to be minimum based on the GW contours and topographical characteristics, while in case of gradient BC, selected gradient values were estimated based on GW contours.…”

“…2020, 10, 1281 2 of 23 water resources. Hydrological research and forecast has become increasingly important due to the growing problems with the available water resources, and due to this reason, the hydrological forecasts have been modernised, extending from simple flood predictions to detailed water management decisions and practices that require extensive hydrological processes information [1][2][3][4]. Integrated hydrological models play an essential role by providing the necessary information regarding biological, physical, and chemical processes and their interactions within a catchment [5,6].…”

The Development and Application of Malaysian Soil Taxonomy in SWAT Watershed Model

“…However, many more hydrological models that were found in the literature have been utilized for the watershed modeling study in the country. These included a Hydrologic Engineering Centre-The Hydrologic Modeling System (HEC-HMS) software [2][3][4]; followed was the MIKE SHE models [5], and finally the most current model is the Soil Water Assessment Tools (SWAT) software [6,7]. Among these models, the physically based distributed model SWAT is well established for analyzing the impacts of land management practices on water in large complex watersheds [8].…”

Application on One-at-a-Time Sensitivity Analysis of Semi-Distributed Hydrological Model in Tropical Watershed

“…But many more hydrological models were found in the literature have been utilized for the watershed modeling study in the country. These included a Hydrologic Engineering Centre-The Hydrologic Modeling System (HEC-HMS) software [7]- [11]; followed was the MIKE SHE models [12] and finally the most current model is the Soil Water Assessment Tools (SWAT) software [13], [14]. Among these models, the physically based distributed model SWAT is well established for analyzing the impacts of land management practices on water, sediment, and agricultural chemical yields in large, complex watersheds [15].…”