Evaluation of SCS model for flood characteristic prediction in an ungauged catchment considering effects of excess rainfall and base flow separation

Bahrami, Erfan; Salarijazi, Meysam; Mohammadrezapour, Omolbani; Jou, Parviz Haghighat

doi:10.1007/s12040-021-01756-2

Cited by 17 publications

(4 citation statements)

References 31 publications

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“…The SCS-CN model is a precipitation runoff model developed by the water and Soil Conservation Service of the United States Department of Agriculture, which considers regional underlying surface factors and meteorological factors, and reflects the influence of different soil types and land use types on runoff [ 21 , 22 , 23 ]. The SCS-CN model is used to calculate runoff, and the final calculation equation is as follows:

where

is the direct runoff (mm);

is the total precipitation (mm);

is the potential maximum retention (mm);

is the initial loss rate (0.1 ≤

≤ 0.3), which is mainly affected by geological and meteorological factors.…”

Section: Methodsmentioning

confidence: 99%

Evaluation of Emergency Response Capacity of Urban Pluvial Flooding Public Service Based on Scenario Simulation

Zhang

Kong

et al. 2022

IJERPH

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The evaluation of emergency response capability under different pluvial flooding scenarios is an essential approach to improve the emergency response capability of flood disasters. A new evaluation method of emergency response capacity of urban public services is proposed based on urban pluvial flooding scenario simulation. Firstly, inundation area and depth under different pluvial flooding scenarios are simulated based on the SCS-CN model. Following that, space densities of all indicators include inundation area and depth, road network and the emergency public service institutions. Then, the indicator weight is determined by the combined weighting method of entropy weight and coefficient of variation. Finally, the emergency response capacity index (of each pixel) is calculated based on the graph stacking method. Taking Erqi District, Zhengzhou City as an example, the emergency response capacity of public service under different urban flooding scenarios is evaluated. The results show that the spatial distribution difference of public service emergency response capacity in Erqi District, Zhengzhou City is obvious, and with the increase of the precipitation return period, the high value area of public service emergency response capability decreases gradually and the low value area increases gradually. This method takes into account the specific urban flooding scenario and the layout of public service institutions and road networks that have strong practicability. the results of the evaluation can provide a reference for the construction of urban flood emergency response capacity and provide support for emergency decision-making.

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where

is the direct runoff (mm);

is the total precipitation (mm);

is the potential maximum retention (mm);

is the initial loss rate (0.1 ≤

≤ 0.3), which is mainly affected by geological and meteorological factors.…”

Section: Methodsmentioning

confidence: 99%

Evaluation of Emergency Response Capacity of Urban Pluvial Flooding Public Service Based on Scenario Simulation

Zhang

Kong

et al. 2022

IJERPH

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“…The SCS method is commonly used for hydrological modeling in both controlled and uncontrolled catchments [64,65]. This method to assess the impact of urbanization on changes in hydrology was used, among others, by Li et al [66], who studied the hydrologic effects of urbanization on direct runoff characteristics in Shenyang (China) and by Sjöman and Gill [67] in the analysis of sealing due to changes in land use in the Höjeå river catchment (Sweden).…”

Section: Scs-cn Methodsmentioning

confidence: 99%

Determination of Pollution and Environmental Risk Assessment of Stormwater and the Receiving River, Case Study of the Sudół River Catchment, Poland

Godyń

Bodziony

Grela

et al. 2022

IJERPH

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Changes in the land use of urban catchments and the discharge of stormwater to rivers are causing surface water pollution. Measurements were taken of the quality of discharged stormwater from two areas with different types of development: a residential area and a residential–commercial area, as well as the quality of the Sudół River water below the sewer outlets. The following indicators were studied: TSS, COD, N–NO3, N–NO2, TKN, TN, TP, Zn, Cu, Hg, HOI, and PAHs. The influence of land use on the magnitudes of flows in the river was modeled using the SCS–CN method and the Snyder Unit Hydrograph Model. The results showed an increase in sealing and a resulting increase in surface runoff. Concentrations of pollutants in stormwater and analysis of the potential amounts of loadings contributed by the analyzed stormwater outlets indicate that they may be responsible for the failure to meet environmental targets in the Sudół River. Environmental risk assessment shows that the aquatic ecosystem is at risk. A risk factor indicating a high risk of adverse environmental effects was determined for N–NO3, Zn, and Cu, among others.

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“…where Q is the direct runoff (mm); P is the total precipitation (mm); F is the actual infiltration amount; S is the potential maximum retention (mm); and I a = λS, λ is the initial loss rate. Under the condition of average runoff, the standard value of λ is 0.2 [23,24]. Combining Formulas (1) and ( 2), the surface runoff calculation formula of SCS-CN model can be established:…”

Section: Numerical Flood Simulationmentioning

confidence: 99%

A Study on the Accessibility of the Emergency Medical Services for Urban Kindergartens and Nursing Homes Based on Urban Pluvial Flooding Scenarios

et al. 2023

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Vulnerable groups such as children and the elderly are the focus of emergency medical rescue during urban pluvial floods. Taking the Erqi District of Zhengzhou City as an example, the SCS-CN model and Chicago rainfall model are used to simulate pluvial flooding based on the comprehensive consideration of urban rainfall, runoff, topography, and drainage. Additionally, the accessibility of emergency medical aid for kindergartens and nursing homes is evaluated in the Erqi District of Zhengzhou under different pluvial flooding scenarios using GIS network analysis technology. The results showed that the number of kindergartens and nursing homes without timely access to emergency medical rescue increased with the increase in precipitation return periods. Under the 500-year and 1000-year pluvial flooding scenarios, kindergartens and nursing homes that can obtain emergency medical rescue had delayed response times. Furthermore, with the increase in the precipitation return periods, both the number and delay time of kindergartens and nursing homes significantly increased. The accessibility and delay time of emergency medical rescue in kindergartens and nursing homes were determined by the intensity of pluvial flooding (including inundation area and depth), road traffic conditions, and the number and location of medical institutions, nursing homes, and kindergartens. The research results can provide a scientific basis for improving the refinement level of urban flood disaster management and emergency response services.

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Evaluation of SCS model for flood characteristic prediction in an ungauged catchment considering effects of excess rainfall and base flow separation

Cited by 17 publications

References 31 publications

Evaluation of Emergency Response Capacity of Urban Pluvial Flooding Public Service Based on Scenario Simulation

Evaluation of Emergency Response Capacity of Urban Pluvial Flooding Public Service Based on Scenario Simulation

Determination of Pollution and Environmental Risk Assessment of Stormwater and the Receiving River, Case Study of the Sudół River Catchment, Poland

A Study on the Accessibility of the Emergency Medical Services for Urban Kindergartens and Nursing Homes Based on Urban Pluvial Flooding Scenarios

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