Open Access
Effects of Erosion Control Measures on Mountain Floods： A Case Study of the Censhui River South Branch Watershed
TLDR
Wang et al. as discussed by the authors investigated the effects of various erosion control measures on mountain floods, and a case study was conducted in Censhui River South Branch Watershed using scenario analysis and soil conservation service (SCS) methods.Abstract:
To investigate the effects of various erosion control measures on mountain floods, a case study was conducted in Censhui River South Branch Watershed using scenario analysis and soil conservation service (SCS) methods. A distributed hydrological model was developed, and watershed parameters were determined based on satellite imagery, digital terrain models, digital maps and field investigations. Two types of erosion control measures were investigated: the variation of vegetation covers and the change of cultivation techniques. Seven scenarios were considered for the test watershed. The results show: (1) while the de-vegetation results in the increase of peak discharge, the improve of vegetation covers decreases peak discharge at watershed scale; (2) by both improving vegetation cover and enhancing terrace-cultivation technology, the peak discharge is reduced and the peak flow arrival time is delayed; (3) attention should be attached to both early warning system and measures changing the underlying surface and conveyance systems.read more
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References
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Journal ArticleDOI
Flash flood warning based on rainfall thresholds and soil moisture conditions: An assessment for gauged and ungauged basins
TL;DR: In this article, the authors evaluate a threshold-based flash flood warning method, by considering a wide range of climatic and physiographic conditions, and by focusing on ungauged basins.
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National threshold runoff estimation utilizing GIS in support of operational flash flood warning systems
Theresa M. Carpenter,Jason A. Sperfslage,Konstantine P. Georgakakos,Konstantine P. Georgakakos,T. Sweeney,D.L. Fread +5 more
TL;DR: In this paper, the authors used Geographic Information Systems (GIS) and digital terrain elevation databases to develop a national system for determining threshold runoff, which is the amount of excess rainfall accumulated during a given time period over a basin that is just enough to cause flooding at the outlet of the draining stream.
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Analytical results for operational flash flood guidance
TL;DR: In this paper, the theoretical basis of developing operational flash flood guidance systems using analytical methods is studied using the Sacramento soil moisture accounting model, which is used operationally in the United States to produce flash flood estimates of a given duration from threshold runoff estimates.
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Multistep Planning Model for Conjunctive Use of Surface‐ and Ground‐Water Resources
TL;DR: In this paper, a three-step modeling approach is presented for comprehensive analysis of the planning problem involving integrated use of surface and ground water in irrigation in the Bagmati River Basin in Nepal.
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Rainfall thresholds and flood warning: an operative case study
TL;DR: In this paper, an operative methodology for rainfall thresholds definition, in order to provide at critical river section optimal flood warnings, is illustrated, and preliminary results in terms of reliability analysis (presence of false alarms and missed alarms, evaluated using indicators like hit rate and false alarm rate) for the case study of Mignone River are presented.