Transmission Losses in Arid Region

Walters, Michael O.

doi:10.1061/(asce)0733-9429(1990)116:1(129)

Cited by 102 publications

(76 citation statements)

References 6 publications

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“…The subsurface layers (layers B, C and D) are modeled using the linear storage model (Figure 7c). The Natural Resources Conservation Service (NRCS) method is used to calculate the initial losses in the target catchments [70], and a regression formula developed for the arid regions and wadis by Walters [71] is adopted to estimate the instantaneous transmission losses with runoff. …”

Section: Hydro-beam Modelmentioning

confidence: 99%

A Hydrological and Geomorphometric Approach to Understanding the Generation of Wadi Flash Floods

Abdel-Fattah

Saber

Kantoush

et al. 2017

Water

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Abstract:The generation and processes of wadi flash floods are very complex and are not well understood. In this paper, we investigate the relationship between variations in geomorphometric and rainfall characteristics and the responses of wadi flash floods. An integrated approach was developed based on geomorphometric analysis and hydrological modeling. The Wadi Qena, which is located in the Eastern Desert of Egypt, was selected to validate the developed approach and was divided into 14 sub-basins with areas ranging from 315 to 1488 km 2 . The distributed Hydrological River Basin Environment Assessment Model (Hydro-BEAM) was used to obtain a good representation of the spatial variability of the rainfall and geomorphology in the basin. Thirty-eight geomorphometric parameters representing the topographic, scale, shape and drainage characteristics of the basins were considered and extracted using geographic information system (GIS) techniques. A series of flash flood events from 1994, 2010, 2013, and 2014, in addition to synthetic virtual storms with different durations and intensities, were selected for the application of this study. The results exhibit strong correlations between scale and topographic parameters and the hydrological indices of the wadi flash floods, while the shape and drainage network metrics have smaller impacts. The total rainfall amount and duration significantly impact the relationship between the hydrologic response of the wadi and its geomorphometry. For most of the parameters, we found that the impact of the wadi geomorphometry on the hydrologic response increases with increasing rainfall intensity.

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Section: Hydro-beam Modelmentioning

confidence: 99%

A Hydrological and Geomorphometric Approach to Understanding the Generation of Wadi Flash Floods

Abdel-Fattah

Saber

Kantoush

et al. 2017

Water

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“…A simple approach to rainfall-runoff modelling was proposed by Sherman [18] based on the unit hydrograph method, which hypothesizes that a watershed has a unique hydrological response function that is reflected by a unit hydrograph. Many researchers have described flood hydrographs and the recession limb as part of flood-routing procedures [16,[19][20][21][22][23]. In general, flood hydrograph analysis provides a simple method for estimating runoff volume in a watershed in response to storm patterns [24][25][26][27] or physical characteristics of the drainage area [10,11,15,28,29].…”

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confidence: 99%

“…The YP is dominated by the Subtropical ridge (latitude of [20][21][22][23][24][25][26][27][28][29][30] 0 N), and is classified as arid zone. The YP has been designated as a national radioactive waste site for the last approximately 50 years.…”

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confidence: 99%

Integration Techniques for Environmental Impact Assessment of Industrial Pollutants

Dody¹,

Shillito²,

Givati³

et al. 2017

IJEP

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Abstract-YaminPlain as the host of the national radioactive waste disposal in near surface repositories is very sensitive to erosion during flood events. To estimate the runoff and erosion Kineros2 model was used. For the period of 2012-2015, twelve related rainfall and runoff events were recorded from a centrally-located recording rain gage and separate runoff station at the outlet of the Nahal Yamin watershed, located in the northeast of the Negev Desert, Israel. Four of the storms, associated with mid-latitude cyclones were analysed due to the assumed relatively homogeneous distribution of rain. Three runoff parameters-peak discharge, time to peak and runoff volume were used to compare the computed with the measured hydrograph. In two events the fit was 2.16 and 3.67 for Root Mean Square Errors of 0.48 and -0.54 for Nash-Sutcliffe coefficients. The erosion rate calculated by the model of a few millimetres per event were in the same of order of magnitude as found by different techniques. In this limited application, the Kineros2 model provided valuable insight into the hydrological functioning of a critical arid watershed.

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“…Hydro-BEAM model has been adopted and implemented in the arid regions by (Saber et al, 2010a;Saber, 2010;Saber et al, 2013) . The components of the Hydro-BEAM model utilized in this study include a GIS interface for data input and visualization, surface runoff and stream routing modeling based on the kinematic wave approximation, the initial and 10 transmission losses modeling is estimated via the Curve Number approach (SCS, 1997) and Walter's equation (Walters, 1990) respectively, and groundwater modeling based on the linear storage model. However, understanding of hydrological process resulting in flash floods is hampered by the observational difficulties.…”

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confidence: 99%

Bias Correction of Satellite-Based Rainfall Estimates for Modeling Flash Floods in Semi-Arid regions: Application to Karpuz River, Turkey

Saber

Yılmaz

2016

Preprint

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This study investigates the utility of gauge-corrected satellite-based rainfall estimates in simulating flash floods at Karpuz River -a semi-arid basin in Turkey. Global Satellite Mapping of Precipitation (GSMaP) product was evaluated with 10 the rain gauge network at monthly and daily time-scales considering various time periods and rainfall rate thresholds. Statistical analysis indicated that GSMaP shows acceptable linear correlation coefficient with rain gauges however suffers from significant underestimation bias. A rainfall rate threshold of 1 mm/month was the best choice to improve the match between GSMaP and rain gauges implying that appropriate threshold selection is critically important for the bias correction.Multiplicative bias correction was applied to GSMaP data using the bias factors calculated between GSMaP and observed

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Transmission Losses in Arid Region

Cited by 102 publications

References 6 publications

A Hydrological and Geomorphometric Approach to Understanding the Generation of Wadi Flash Floods

A Hydrological and Geomorphometric Approach to Understanding the Generation of Wadi Flash Floods

Integration Techniques for Environmental Impact Assessment of Industrial Pollutants

Bias Correction of Satellite-Based Rainfall Estimates for Modeling Flash Floods in Semi-Arid regions: Application to Karpuz River, Turkey

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