Modeling hydrological systems

This study utilized the GIS-based Soil and Water Assessment Tool (SWAT) model to simulate the flow of Vu Gia - Thu Bon river basin at two hydrological stations - Nong Son and Thanh My, during the calibration period (2004 - 2010) and the verification period (2011 - 2015). The evaluation results of both periods, as measured by the NSE and R2 indexes, were found to be above 0.75.

12p dianmotminh02 03-05-2024 2 2   Download

This paper presents the application of a real-time decision support system (DSS) for power generation and flood control at the Thac Xang hydropower plant in Lang Son province, Vietnam. The DSS consists of three key components: real-time operation and visualization, forecast, and optimized decision modules.

10p viwolverine 07-07-2023 4 3   Download

Flood is one of the most commonly occurring forms of natural disaster which damage to environment and society. In order to contribute to the work of mitigating the effect of climate change as well as floods' damage, this study introduces a method to simulate discharge with respect to design storm through hydrological modeling system (HMS).

15p viironman 02-06-2023 6 3   Download

In this paper, we introduce a distributed grid cell runoff model and procedure to quickly calibrate and verify parameters of the rainfall-runoff model, using interrupted data collected from different storm events in different years.

3p vilucius 03-03-2023 3 1   Download

Water is one of the most essential commodities for mankind and the largest available source of fresh water lays underground. Tremendous increase in the agricultural, industrial and domestic activities in recent years has increased the demand for good quality water to meet the growing needs. Groundwater is mostly preferred to meet this growing demand because of its lower level of contamination and wider distribution. The occurrence of groundwater is a consequence of the interaction of the climatic, geological, hydrological and physiographical factors.

8p quenchua6 15-06-2020 15 1   Download

The water is an essential component of human life and survival of plants and animals. Estimation of evaporation is very important in arid and semi-arid region where the shortage of water occurs. It plays an important role for planning and management of water resources projects, necessary for scheduling of irrigation and in planning farm irrigation systems. It is a very important component of hydrologic cycle and water resources problems.

9p caygaocaolon4 01-04-2020 17 1   Download

This paper presents an integration approach involving Remote sensing / Geographic information system(RS /GIS) and hydrological models to characterized and quantify the effect of land use/ land cover (LULC) change on basin hydrology parameters. The Arc SWAT model was used daily weather and stream flow data of Upper Narmada basin from 1989 to 2011. Study evaluates change in Surface runoff, Evapo-transpiration, Total water yield, stream flow and Total aquifer recharge. Further analysis present additional evidence that changes in vegetation cover altered the hydrological response to region.

5p cothumenhmong4 25-03-2020 22 1   Download

The study used a semi-structured interview method, the Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) tool and general linear models to investigate the influence of natural and human-derived components on the rice provisioning service at six villages. The results showed that along with the importance of applying a fertilizer-based system in the terraced rice ecosystem, topology- and hydrology-based systems have been influencing significantly on water and nutrient supply for irrigation on terraced rice fields.

14p 12120609 22-03-2020 24 1   Download

This paper examines the ability to capture the observed baseline temperature and precipitation (1986-2005) in the Ba River Basin from GCM outputs, RCM outputs, bias-corrected GCM outputs and bias-corrected RCM outputs by analyzing statistical indicators between historical simulations and observed data in 4 temperature and 6 rainfall stations. Bias-corrected results of both GCM and RCM have significantly smaller errors compared to the unbias-corrected ones.

9p abcxyz123_02 03-03-2020 8 0   Download

Hydrological modelling is a powerful technique of hydrologic system investigation for both the research hydrologists and the practicing water resources engineers involved in the planning and development of integrated approach for management of water resources. In present study, the observed rainfall and runoff data of 2010, 2011, 2013 and 2014years were used as input data. In ANN, input data was divided in 70 per cent, 15 per cent and 15 per cent for training, testing and validation purpose, respectively.

7p nguathienthan2 19-12-2019 23 0   Download

Climate change impact assessment in hydrological systems in the past is of a top-down nature. In particular, future climate states are predicted using scenarios and climate models. Although the approach could provide optimal adaptation measures for the intended future, its applications may be increasingly limited as there are large uncertainties.

12p vithomasedison2711 20-08-2019 24 0   Download

This study aimed to apply the Variable Infiltration Capacity (VIC) hydrological model for simulating the daily river flow during the period of 2005-2014 for the Red River System, Vietnam. For this purpose, the VIC-3L hydrological model forced with satellite meteorological datasets was set up for the Red River Basin at the spatial scale of 0.1o × 0.1o (~11km × 11km).

7p vinobita2711 31-05-2019 10 1   Download

The comparison shows that the accuracy of our hydrological river flow model is over 90% during flood peak time of raining season. Flooding has become a catastrophic disaster recently in many cities. Flood model based the satellite images, fuzzy logic evaluation, and water capacity sensors in river were studied while GIS has been applied to various applications.

6p praishy2 27-02-2019 21 0   Download

The deposition in Day estuary tends to increase strongly due to abundant sources of sediment from the Red River system and the estuary is located in a concave coast where strong impacts of wave are eliminated. In this study, MIKE model developed by Danish Hydraulic Institute is employed to simulate, evaluate and forecast hydrodynamic regime as well as erosion, sedimentation and shoreline change processes in Day river mouth located in Ninh Binh.

6p banhbeovodung 25-06-2013 59 4   Download

The Study Team will make and define a series of assumptions about future land use, urban development, climate, geomorphic processes, the agricultural drainage system, and watershed management in the MRB. These assumptions will be used as input variables in the model system to simulate future (some specified year, e.g., 2025) conditions. The small watershed, large watershed, and river water quality model systems will be used to simulate future (without projects or change in management) conditions of system hydrology, loading rates, and Minnesota River water quality conditions.

12p tay_thi_le 21-02-2013 59 6   Download

Over the past decade, many countries have been upgrading their water monitoring systems and their data collection efforts, supported with new information technologies and web‑based communication. A review of the information demands arising from OECD work, shows that important gaps still remain. The quality of water data currently available at national and international level is insufficient to effectively support integrated water management and water policies.

263p lulaula 25-10-2012 53 5   Download

This work is intended to survey the basic theory that underlies the multitude of parameter-rich models that dominate the hydrological literature today. It is concerned with the application of the equation of continuity (which is the fundamental theorem of hydrology) in its complete form combined with a simplified representation of the principle of conservation of momentum. Since the equation of continuity can be expressed in linear form by a suitable choice of state variables and is also parameterfree, it can be readily formulated at all scales of interest.

177p kuckucucu 15-05-2012 78 7   Download

Modeling Hydrologic Change: Statistical Methods is about modeling systems where change has affected data that will be used to calibrate and test models of the systems and where models will be used to forecast system responses after change occurs. The focus is not on the hydrology. Instead, hydrology serves as the discipline from which the applications are drawn to illustrate the principles of modeling and the detection of change. All four elements of the modeling process are discussed: conceptualization, formulation, calibration, and verification.

434p crazy_sms 10-05-2012 84 19   Download

The use of pesticides in the United States has increased dramatically during the last several decades. Hundreds of different chemicals have been developed for use in agricultural and non-agricultural settings. Concerns about the potential adverse effects of pesticides on the environment and human health have spurred an enormous amount of research into their environmental behavior and fate. Much of this concern has focused on the potential for contamination of the hydrologic system, including surface waters.

353p 951628473 07-05-2012 79 15   Download

Words can easily borrow, but the meaning of love from the heart of a people is difficult to describe. So I want to ask for forgiveness from the people that support can not be appreciated in the words and from those who, by any chance, I forgot to mention. First of all what I want to thank prof. dr.ir. Wind Herman and his wife - Joke. The interviews with prof. Wind held in Bangkok and his decision has helped me to be here, at the University of Twente, to carry out my doctoral research. Herman and Joke, I will never forget...

139p gauhaman123 17-11-2011 62 11   Download