Variability of the asymptotic curve number in mountainous undeveloped arid basins based on historical data: Case study in Saudi Arabia

Farran, Mohammed M.; Elfeki, Amro

doi:10.1016/j.jafrearsci.2019.103697

Cited by 11 publications

(4 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the mid-80s, the Saudi Arabian Dames and Moore Company (Saudi Arabian Dames and Moore, 1988) carried out a detailed study covering five basins, taking detailed measurements of storms (rainfall and runoff) for a period of 4 years (1984)(1985)(1986)(1987). The study region includes five basins located southwest of SA, as shown in Figure 1 Geologically, the study region is located in Asir escarpment which part of the Arabian Shield (Farran & Elfeki, 2020b). The Arabian Shield is exposed to crystalline basement rocks usually Neoproterozoic age (Patchett & Chase, 2002).…”

Section: Elfeki Et Al (2020)mentioning

confidence: 99%

“…F Geologically, the study region is located in Asir escarpment which part of the Arabian Shield (Farran & Elfeki, 2020b). The Arabian Shield is exposed to crystalline basement rocks usually Neoproterozoic age (Patchett & Chase, 2002).…”

Section: Thomas Et Al (2020)mentioning

confidence: 99%

“…The reason these values are high is that the phi (Ф) index method does to take into consideration the initial abstractions in the basins. Recently, some flash flood studies have been carried out in the study basins, which have focused on the estimation of transmission losses (Elfeki et al, 2014), modelling of flash floods incorporating transmission losses (Noor & Elfeki, 2017), curve number (CN) estimation from field measurements (Farran & Elfeki, 2020a, 2020b, 2020c) estimation of CN from infiltration tests (Elfeki et al, 2020). De Vries and Simmers (2002) stated that despite the numerous studies on the determination of recharge fluxes in arid and semi‐arid regions remain subject to uncertainty.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Aquifer recharge from flash floods in the arid environment: A mass balance approach at the catchment scale

Farran

Al-Amri

Elfeki

2021

Hydrological Processes

Self Cite

View full text Add to dashboard Cite

Estimation of the infiltration/natural recharge to groundwater from rainfall is an important issue in hydrology, particularly in arid regions. This paper proposes the application of The Natural Resources Conservation Service (NRCS) mass balance model to develop infiltration (F)-rainfall (P) relationship from flash flood events.Moreover, the NRCS method is compared with the rational and the Ф-index methods to investigate the discrepancies between these methods. The methods have been applied to five gauged basins and their 19 sub-basins (representative basins with detailed measurements) in the southwestern part of Saudi Arabia with 161 storms recorded in 4 years. The F-P relationships developed in this study based on NRCS method are: F = 39% P with R 2 = 0.932 for the initial abstraction factor, λ = 0.2. However, F = 77% P with R 2 = 0.986 for λ = 0.01. The model at λ = 0.01 is the best to fit the data, therefore, it is recommended to use the formula at λ = 0.01. The results show that the NRCS model is appropriate for the estimation of the F-P relationships in arid regions when compared with the rational and the Ф index methods.The latter overestimates the infiltration because they do not take λ into account.There is no significant difference between F-P relationships at different time scales. This helps the prediction of infiltration rates for aquifer recharge at ungauged basins from monthly and annual rainfall data with a single formula.

show abstract

Section: Elfeki Et Al (2020)mentioning

confidence: 99%

Section: Thomas Et Al (2020)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Aquifer recharge from flash floods in the arid environment: A mass balance approach at the catchment scale

Farran

Al-Amri

Elfeki

2021

Hydrological Processes

Self Cite

View full text Add to dashboard Cite

show abstract

“…transforming GIUH e into an equivalent unit hydrograph ðUH e Þ with one hour duration for both Nash and Fr echet. The losses have two components the infiltration (F) and the initial abstraction (I a ¼ k s) where k is the initial abstraction ratio (0.01) (Farran and Elfeki 2020) and s is the potential maximum retention of the basin which is estimated from curve number (CN). Table 5 shows the data used for validation of Nash and Fr echet models or each event.…”

Section: Application Of Giuh E On the Study Basinmentioning

confidence: 99%

Developing a geomorphological instantaneous unit hydrograph (GIUH) using equivalent Horton-Strahler ratios for flash flood predictions in arid regions

Bamufleh

Al-Wagdany

Elfeki

et al. 2020

Geomatics, Natural Hazards and Risk

View full text Add to dashboard Cite

The Horton-Strahler ratios are important to describe the stream network and to identify the hydrologic response of a basin using the GIUH concept. These ratios are often sensitive to the selected threshold area for the extraction of the stream network form digital elevation models (DEM). Researches are seeking to find out the appropriate threshold with no success. Self-similarity approach of the properties of the stream network can provide an estimation of equivalent Horton-Strahler ratios using parameters independent of the threshold area. This approach is applied on four arid basins in Saudi Arabia. The equivalent Horton-Strahler ratios are used to derive GIUH based on Nash and Fr echet hydrograph models. The results indicate that the Horton-Strahler ratios and the length of the highest order stream depend strongly on the threshold and consequently, the GIUH characteristics show discrepancies due to the threshold. This study recommends to use threshold area that is equal to 0.02% of the basin area for basins less than 280 km 2 and 0.002% of the basin area for basins large than 2700 km 2 .The comparison between the measured and the equivalent hydrographs of Nash and Fr echet models for each event shows that there are obvious discrepancies in terms of peak discharge, Q p , time to peak,T p , time lag, T lag , and the runoff volume. The results of Nash model are relatively better to represent the measured hydrographs. The minimum relative error (RE) of some events are: RE of Q p ranges between 12.5% for Nash to 61% for Fr echet, RE of T p is À53.8% for both Nash and Fr echet, while RE of T lag is 0.0% for both Nash and Fr echet and RE of runoff volume ranges between À37.5% for Nash to À34.5% for Fr echet. The study recommends investigating other GIUH models to improve the RE in arid regions.

show abstract

On the Role of Hydrological Losses in Estimating Event Runoff Coefficients Using the NRCS Method

Eslami

Abdollahi

Ebrahimi‬

2023

Water Resour Manage

View full text Add to dashboard Cite

Variability of the asymptotic curve number in mountainous undeveloped arid basins based on historical data: Case study in Saudi Arabia

Cited by 11 publications

References 22 publications

Aquifer recharge from flash floods in the arid environment: A mass balance approach at the catchment scale

Aquifer recharge from flash floods in the arid environment: A mass balance approach at the catchment scale

Developing a geomorphological instantaneous unit hydrograph (GIUH) using equivalent Horton-Strahler ratios for flash flood predictions in arid regions

On the Role of Hydrological Losses in Estimating Event Runoff Coefficients Using the NRCS Method

Contact Info

Product

Resources

About