Determination of Flash Floods in Western Arabian Peninsula

Sirdas, Sevinc; Şen, Zekâi̇

doi:10.1061/(asce)1084-0699(2007)12:6(676)

Cited by 15 publications

(7 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Sirdas and Sen (2007) presented a new lumped approach that combines isohyetal rainfall maps, kinematic wave and rational methods to produce synthetic flash flood hydrographs for arid regions. This empirical approach relates flood peaks to the average temporal and areal intensities of storm rainfalls.…”

Section: Flow Forecasting Modelsmentioning

confidence: 99%

“…For example, the Sacramento soil moisture accounting model (SAC-SMA) (Burnash et al, 1973) is used by the US National Weather Services (NWS) for producing flash flood guidance, and Kobold and Brilly (2006) recently demonstrated the satisfactory use of the HBV model (Bergstrom, 1976) in flash flood forecasting for a mountainous catchment on an hourly timestep. Sirdas and Sen (2007) presented a new lumped approach that combines isohyetal rainfall maps, kinematic wave and rational methods to produce synthetic flash flood hydrographs for arid regions. This empirical approach relates flood peaks to the average temporal and areal intensities of storm rainfalls.…”

Section: Lumped and Distributed Hydrological Modelsmentioning

confidence: 99%

See 1 more Smart Citation

A review of advances in flash flood forecasting

Hapuarachchi

Wang

Pagano

2011

Hydrological Processes

434

286

View full text Add to dashboard Cite

Abstract:Flash flooding is one of the most hazardous natural events, and it is frequently responsible for loss of life and severe damage to infrastructure and the environment. Research into the use of new modelling techniques and data types in flash flood forecasting has increased over the past decade, and this paper presents a review of recent advances that have emerged from this research. In particular, we focus on the use of quantitative precipitation estimates and forecasts, the use of remotely sensed data in hydrological modelling, developments in forecasting models and techniques, and uncertainty estimates. Over the past decade flash flood forecast lead-time has expanded up to six hours due to improved rainfall forecasts. However the largest source of uncertainty of flash flood forecasts remains unknown future precipitation. An increased number of physically based hydrological models have been developed and used for flash flood forecasting and they have been found to give more plausible results when compared with the results of conceptual, statistical, and neural network models. Among the three methods for deciding flash flood occurrence discussed in this review, the rainfall comparison method (flash flood guidance) is most commonly used for flash flood forecasting as it is easily understood by the general public. Unfortunately, no existing model is capable of making reliable flash flood forecasts in urban watersheds even though the incidence of urban flash flooding is increasing due to increasing urbanisation.

show abstract

Section: Flow Forecasting Modelsmentioning

confidence: 99%

Section: Lumped and Distributed Hydrological Modelsmentioning

confidence: 99%

A review of advances in flash flood forecasting

Hapuarachchi

Wang

Pagano

2011

Hydrological Processes

434

286

View full text Add to dashboard Cite

show abstract

“…However, a crucial issue in this model is the existence of two parameters (namely: C t a coefficient represents variations in watershed slopes and storage characteristics; and C p a coefficient represents the effects of retention and storage) that need to be determined from actual observations for the specific watershed or can be taken from some other watersheds that have similar topographic and morphometric characteristics. Hence, empirical approach is suggested as an alternative for constructing a dimensionless UH for ungauged basins in southwest region of KSA [16,17]. The Soil Conservative Service (SCS) method is seldom utilized, particularly in few academic studies in KSA [18].…”

Section: Previous Workmentioning

confidence: 99%

Developing GIS-Based Unit Hydrographs for Flood Management in Makkah Metropolitan Area, Saudi Arabia

Dawod¹,

Koshak²

2011

JGIS

View full text Add to dashboard Cite

Unit hydrographs (UH) are either determined from gauged data or derived using empirically-based synthetic unit hydrograph procedures. In Saudi Arabia, the discharge records may not be available either for several locations or for long time scales, and therefore synthetic unit hydrographs are crucial in flood and water resources management. Available metrological, geological, and land use datasets have been utilized in order to apply the US National Resources Conservative Services (NRCS) methodology in a Geographic Information Systems (GIS) environment. Furthermore, NRCS unit hydrographs have been developed for six watersheds within Makkah metropolitan area, southwest Saudi Arabia. The accomplished results show that the UH time to peak discharge vary from 1.15 hours to 4.47 hours, and the UH peak discharge quantities range from 10.14 m3/s to 16.74 m3/s. It is concluded that the third basin in Makkah city may be considered as the most hazardous catchment. Hence, it is recommended that careful flood protection procedures should be taken in this area within Makkah city

show abstract

“…A literature review reveals that the flow forecasting models are divided into data-driven [20,21] and lumped/distributed hydrological models [22,23]. A data-driven forecasting model is based on the statistical relationship between rainfall and runoff.…”

Section: Introductionmentioning

confidence: 99%

“…For example, the Sacramento soil moisture accounting model (SCA-SMA) was applied to flash flood guidance by the National Weather Service (USA) [24], and the HBV model (Hydrologiska Byråns Vattenbalansavdelning model) was used to forecast flash floods in Slovenia [22]. Additionally, scholars proposed a lumped hydrological model that combined isohyetal rainfall maps, kinematic waves, and rational methods to forecast flash floods [23]. Of course, the lumped hydrological model also contains drawbacks when it is used in flash flood forecasting, including coarse resolution, the need for long-term historical data to calibrate, and the inapplicability to ungauged catchments [12].…”

Section: Introductionmentioning

confidence: 99%

A Simple Early Warning System for Flash Floods in an Ungauged Catchment and Application in the Loess Plateau, China

Singh

et al. 2019

Water

View full text Add to dashboard Cite

Under climate change, flash floods have become more frequent and severe, and are posing a danger to society, especially in the ungauged catchments. The objective of this paper, is to construct a simple and early warning system, serving for flash floods risk management in the ungauged catchments of the Loess Plateau in China, and offer a reference for flash flood warning in other areas in the world. Considering the absence of hydrological data in the ungauged catchments, the early warning system for flash floods is established by combining the regional or watershed isograms of hydrological parameters and local empirical formulas. Therein, rainfall and water stage/flow are used as warning indices for real-time risk estimation of flash flood. For early warning, the disaster water stage was first determined according to the protected objects (e.g., residents and buildings), namely the critical water stage. The critical flow (flow threshold), was calculated based on the water stage, and the established relationship between water stage and flow using the cross-sectional measured data. Then, according to the flow frequency curve of the design flood, the frequency of critical flow was ascertained. Assuming that the rainfall and the flood have the same frequency, the critical rainfall threshold was calculated through the design rainstorm with the same frequency of the design flood. Due to the critical rainfall threshold being sensitive with different soil conditions, the design flood and frequency curve of flood flow were calculated under different soil conditions, and thus the rainfall threshold was given under different soil condition for early warning of the flash flood disaster. Taking two sections in Zichang County (within the Loess Plateau) as an example, we set the rainfall and water stage/flow thresholds to trigger immediate or preparation signals for the migration of the population along the river. The application of this method to the 7.26 flood events in 2017 in China, shows that the early warning system is feasible. It is expected that this simple early warning system can provide early warnings of flash floods in ungauged catchments in the Loess Plateau and other similar areas.

show abstract

Determination of Flash Floods in Western Arabian Peninsula

Cited by 15 publications

References 11 publications

A review of advances in flash flood forecasting

A review of advances in flash flood forecasting

Developing GIS-Based Unit Hydrographs for Flood Management in Makkah Metropolitan Area, Saudi Arabia

A Simple Early Warning System for Flash Floods in an Ungauged Catchment and Application in the Loess Plateau, China

Contact Info

Product

Resources

About