scholarly journals Study on Applicability of Distributed Hydrological Model under Different Terrain Conditions

2020 ◽  
Vol 12 (22) ◽  
pp. 9684
Author(s):  
Tianxin Li ◽  
Yuxin Duan ◽  
Shanbo Guo ◽  
Linglong Meng ◽  
Matomela Nametso
Keyword(s):  
Hydrological Model ◽  
Water System ◽  
Model Verification ◽  
Distributed Hydrological Model ◽  
Rainfall Runoff ◽  
Model Framework ◽  
Research Areas ◽  
Division Process ◽  
Steep Terrain ◽  
Empty Area

This research aimed to study the applicability and limitations of a distributed hydrological model under discontinuous steep topography and hydrogeological conditions. Based on GIS spatial analysis, typical cases of steep and gentle terrains were selected to construct the distributed hydrological model framework of the research areas (Qinhuangdao and Zhuanghe City, China). The observed runoff was used to test the applicability of the model in different terrain watersheds and to analyze the versatility of the model structure and the relevant parameters of the core modules. The results show that: in the process of using a distributed hydrological model to build models for different regions, problems such as a discontinuous dislocation of the empty area and poor connectivity of the water system will appear in the process of sub-basin division of a steep terrain. By determining the optimal threshold, selecting the best node, discontinuous dislocation, void fusion and other methods, we put forward the corresponding solutions to the problems in the division process and constructed the research area’s distributed hydrological model. The rainfall–runoff process in the study area was simulated accordingly, and the SUFI2 algorithm was used to calibrate the relevant parameters in the model. The relative error (Re), correlation coefficient (R2) and Nash–Sutcliffe efficiency (NSE), which meet the runoff accuracy in the study area, were obtained. The model verification results show that the NSE of steep terrain is 0.90, and R2 is 0.98; the NSE of gentle terrain is 0.91, and R2 is 0.984: the simulation values fit the measured values well, which makes the calibrated model suitable for both steep and gentle terrains. The results can provide a reference for the construction of a distributed hydrological model in watersheds with different terrain.

scholarly journals Application of a distributed hydrological model to the design of a road inundation warning system for flash flood prone areas

2010 ◽  
Vol 10 (4) ◽  
pp. 805-817 ◽  
Author(s):  
P.-A. Versini ◽  
E. Gaume ◽  
H. Andrieu
Keyword(s):  
Cross Sections ◽  
Hydrological Model ◽  
Flash Flood ◽  
Warning System ◽  
Flash Floods ◽  
Probability Of Detection ◽  
Distributed Hydrological Model ◽  
Rainfall Runoff ◽  
Erosion Processes ◽  
Stage Of Development

Abstract. This paper presents an initial prototype of a distributed hydrological model used to map possible road inundations in a region frequently exposed to severe flash floods: the Gard region (South of France). The prototype has been tested in a pseudo real-time mode on five recent flash flood events for which actual road inundations have been inventoried. The results are promising: close to 100% probability of detection of actual inundations, inundations detected before they were reported by the road management field teams with a false alarm ratios not exceeding 30%. This specific case study differs from the standard applications of rainfall-runoff models to produce flood forecasts, focussed on a single or a limited number of gauged river cross sections. It illustrates that, despite their lack of accuracy, hydro-meteorological forecasts based on rainfall-runoff models, especially distributed models, contain valuable information for flood event management. The possible consequences of landslides, debris flows and local erosion processes, sometimes associated with flash floods, were not considered at this stage of development of the prototype. They are limited in the Gard region but should be taken into account in future developments of the approach to implement it efficiently in other areas more exposed to these phenomena such as the Alpine area.

scholarly journals Post-event analysis and flash flood hydrology in Slovakia

2016 ◽  
Vol 64 (4) ◽  
pp. 304-315 ◽  
Author(s):  
Kamila Hlavčová ◽  
Silvia Kohnová ◽  
Marco Borga ◽  
Oliver Horvát ◽  
Pavel Šťastný ◽  
...  
Keyword(s):  
Hydrological Model ◽  
Flash Flood ◽  
Flash Floods ◽  
Event Analysis ◽  
Distributed Hydrological Model ◽  
Rainfall Runoff ◽  
Flood Events ◽  
Spatially Distributed ◽  
Catchment Size ◽  
Flood Peaks

Abstract This work examines the main features of the flash flood regime in Central Europe as revealed by an analysis of flash floods that have occurred in Slovakia. The work is organized into the following two parts: The first part focuses on estimating the rainfall-runoff relationships for 3 major flash flood events, which were among the most severe events since 1998 and caused a loss of lives and a large amount of damage. The selected flash floods occurred on the 20th of July, 1998, in the Malá Svinka and Dubovický Creek basins; the 24th of July, 2001, at Štrbský Creek; and the 19th of June, 2004, at Turniansky Creek. The analysis aims to assess the flash flood peaks and rainfall-runoff properties by combining post-flood surveys and the application of hydrological and hydraulic post-event analyses. Next, a spatially-distributed hydrological model based on the availability of the raster information of the landscape’s topography, soil and vegetation properties, and rainfall data was used to simulate the runoff. The results from the application of the distributed hydrological model were used to analyse the consistency of the surveyed peak discharges with respect to the estimated rainfall properties and drainage basins. In the second part these data were combined with observations from flash flood events which were observed during the last 100 years and are focused on an analysis of the relationship between the flood peaks and the catchment area. The envelope curve was shown to exhibit a more pronounced decrease with the catchment size with respect to other flash flood relationships found in the Mediterranean region. The differences between the two relationships mainly reflect changes in the coverage of the storm sizes and hydrological characteristics between the two regions.

Calibrating a semi-distributed hydrological model on Fella river basin (Italian Alps)

2021 ◽  
Author(s):  
Veronica Zoratti ◽  
Elisa Arnone ◽  
Giuseppe Formetta ◽  
Silvia Bosa ◽  
Marco Petti
Keyword(s):  
Debris Flow ◽  
Hydrological Model ◽  
Hydrological Cycle ◽  
Soil Water Storage ◽  
High Temporal Resolution ◽  
Distributed Hydrological Model ◽  
Rainfall Runoff ◽  
Modeling Framework ◽  
Event Scale ◽  
Calibration And Validation

<p>The Northeastern Italy and the therein Friuli Venezia Giulia (FVG) region are frequently hit by heavy and prolonged precipitations, which cause frequent debris flow and diffused shallow landslides. In this study we focus on a mountain sub-basin of the Fella river watershed, the Uque at Ugovizza, located in the northeastern Julian Alps of the FVG, where a disruptive rainfall-triggered debris flow occurred in 2003.</p><p>The work aims at pursuing two main targets: (i) implementing a rainfall-runoff and hydro-morphodynamical framework for the analysis of debris flow initiated by intense heavy precipitation; ii) exploiting, for the first time, the flexibility of the GEOframe-NewAge semi-distributed hydrological model simulating high temporal resolution simulations (5-minutes) rainfall-runoff events.</p><p>The GEOframe-NewAge is an open-source component-based modeling framework, which simulates the entire hydrological cycle of the study area, including the snow melting, the soil water storage and the runoff production and routing in the river network; the model is suitable for the rainfall-runoff event scale simulations in Alpine environment with scarce measurements.</p><p>Specifically, we describe the results of the calibration and validation procedures applied to four selected intense events occurred in the period 2009-2019. Meteorological data at 5 minutes-step are used to rainfall-runoff modeling, whereas streamflow at 30 minutes is used for the model calibration and validation. Preliminary results show that the models is able to capture the temporal and spatial dynamic of extremes short events, providing satisfying Nash and Sutcliffe coefficient values.</p>

scholarly journals Rainfall-Runoff Modelling of the West Rapti Basin, Nepal

2020 ◽  
Vol 2 (1) ◽  
pp. 99-107
Author(s):  
Bibek Thapa ◽  
Anusha Danegulu ◽  
Naresh Suwal ◽  
Surabhi Upadhyay ◽  
Bikesh Manandhar ◽  
...  
Keyword(s):  
River Basin ◽  
Water Resource Management ◽  
Hydrological Model ◽  
Model Performance ◽  
Rain Gauge ◽  
Army Corps ◽  
Distributed Hydrological Model ◽  
Rainfall Runoff ◽  
The West ◽  
Us Army

A hydrological model helps in understanding, predicting, and managing water resources. The HEC-HMS (Centre for Hydrological Engineering - Hydrological Modelling Systems, US Army Corps of Engineers) is one of the hydrological models used to simulate rainfall-runoff and routing processes in diverse geographical areas. In this study, a semi-distributed hydrological model was developed using HEC-HMS for the West-Rapti river basin. The model was calibrated and validated at each outlet of sub-basins and used to simulate the outflow of each sub-basins of the West Rapti river basin. A total of eight rain gauge stations, five meteorological stations, and three hydrological stations, within the basin, were used. The simulated results closely matched the observed flows at the three gauging stations. The Nash-Sutcliffe Efficiency indicated the good model performance of the simulated streamflow with the observed flow at two stations and satisfactory model fit at one station. The performance based on percentage bias and root mean square error was good. This model provides a reference to study water balance, water resource management, and flooding control of the West Rapti basin and can be replicated in other basins.

Development of simple distributed hydrological model based on soil moisture simulation

2020 ◽  
Author(s):  
Jiyu Seo ◽  
Jeonghyeon Choi ◽  
Sangdan Kim
Keyword(s):  
Soil Moisture ◽  
Spatial Data ◽  
Hydrological Model ◽  
Hydrologic Model ◽  
Complex Model ◽  
Computer Hardware ◽  
Distributed Hydrological Model ◽  
Model Framework ◽  
Model Based ◽  
Ungauged Watershed

<p>One of challenges to hydrologists is to estimate runoff from ungauged watershed. Hydrologic estimation through modelling is a reasonable, economical and useful approach to quantity and quality management of watershed. The model framework has been comprehensive and complex to reproduce natural phenomena more realistically with the development of computer hardware. However, driving a complex model requires a lot of effort and time, and the use of many parameters reduces the accessibility of end users and the applicability to the ungauged watershed. In this study, we developed a distributed hydrologic model based on soil moisture simulation using simple composition and fewer parameters. Instead of minimizing the number of parameters, GIS data were used to reflect the watershed characteristics into the model. The proposed model was applied to the four dam watersheds in Korea to assess its performance. As a result, it is confirmed that reasonable hydrologic components simulation is possible through the simulation of soil moisture, even though it was a simple model with only three input parameters. If spatial data such as satellite data is additionally applied, the performance of the model is expected to improve further.</p><p><strong>Acknowledgment:</strong> This work was supported by Korea Environment Industry & Technology Institute(KEITI) through Public Technology Program based on Environmental Policy Project, funded by Korea Ministry of Environment(MOE)(2016000200002).</p><p><strong>Keywords</strong>: Distributed hydrological model; Hydrologic components simulation; Soil moisture; Simple hydrological model.</p>

Watershed Hydrological Model HSPF Based on BASINS and the Uncertainty Analysis

2014 ◽  
Vol 1073-1076 ◽  
pp. 1720-1723
Author(s):  
Xu Wang ◽  
Jing Zhang
Keyword(s):  
Model Building ◽  
Hydrological Model ◽  
Water System ◽  
Calibration Method ◽  
Water Shortage ◽  
Distributed Hydrological Model ◽  
Long Term Effects ◽  
Agricultural Chemicals ◽  
Hspf Model ◽  
Social Economic Development

Water is an important guarantee of sustaining life and social economic development. However, at present, our country is faced with more and more problems about water resources, such as water shortage and water pollution. Thus, it brings a chance to hydrological model for research, development and application, and it is also a huge challenge. HSPF model belongs to the distributed hydrological model, based on the meteorological and hydrological data, it can mainly simulate the water quality of natural water system and be used to predict the long-term effects that human activities on water, sand and agricultural chemicals, such as soil erosion and non-point source pollution. This paper mainly introduces the concept of hydrological model, watershed hydrological model, the software BASINS, the watershed hydrological model HSPF and the process mechanism of model building that include data processing and model testing, at the same time, it also introduces the calibration method of model certainty, including the manual adjusting parameter and the calibration standard. Finally, the article also discusses the problems about the uncertainty of the model, and gives some suggestions.

Research on SCS-CN in Lanhe Basin Distributed Rainfall Runoff Event

2011 ◽  
Vol 105-107 ◽  
pp. 1476-1479
Author(s):  
Mei Yang ◽  
Xi Huan Sun
Keyword(s):  
Network Flow ◽  
Water Resource Management ◽  
Hydrological Model ◽  
Distributed Hydrological Model ◽  
Rainfall Runoff ◽  
Dimensionless Unit ◽  
Actual Measure ◽  
Basin Water ◽  
Scs Cn ◽  
Small Basin

Based on the data from Basin hydrology, weather, runoff, land use, soil, DEM and with ARCGIS9.0 and WMS7.0 applications, SCS small basin hydrological model can be applied in Lanhe basin Distributed Hydrological Model. Within each sub-unit, net rainfall can be calculated with SCS-CN, and conflux using SCS dimensionless unit hydrograph, while river network flow concentration using subsection Muskingum method. By conducting the simulation of distributed rainfall runoff where measured runoff value are selected from 20 historical flood, the results indicate there are 14 values that are effective and the ratio comes to 70 percent. And there are 11 effective values after conflux test to the 14 floods where the ratio comes to 80 percent. The process of calculating runoff matches well with actual measure which indicates that the Distributed Hydrological Model is a scientific and precise model and can be applied to basin water flood forecast and water resource management.

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