Department
Department of HYDRAULIC
Research Interests
On the Web:
-
Google Scholar N/A
-
ResearchGate N/A
-
ORCID N/A
-
SCScopus N/A
Recent Publications
Hydrochemical Assessment of Albian Waters of Southern Algeria Using Water Quality Indices
development has led to a considerable increase in water needs, the majority of which is used for
agriculture.
The aim of the present paper is to study the quality of water from nine boreholes in the region
of Ouled Djellal of the Alebian aquifer which extends from the southeast of Algeria, through south
Tunisia, and to the west of Libya, and evaluate its suitability for water supply and irrigation based on the
physico-chemical analysis of samples taken from these boreholes and improved by d index calculation.
According to the results of the water analysis using the different methods, it can be said that the
water in the continental interlayer aquifer has a low quality compared to standards. This concerns more
particularly pH, conductivity, total hardness as well as the concentration of major elements.
To adapt the quality of water of the studied boreholes to standards, preliminary and secondary
treatment is necessary
Citation
M. FERHATI Ahmed, (2025-01-01), "Hydrochemical Assessment of Albian Waters of Southern Algeria Using Water Quality Indices", [national] FERHATI AHMED , Polish Journal of Environmental Studies
Multivariate statistical analysis of groundwater quality in the Akbou region Bejaia
determine the use of water (supply water, irrigation, industrie...)
The study aim determining the physico-chemical analysis and the hydrogeological characteristics of the aquifer of Akbou
region Bejaia coming from the different wells.
To investigate the conformity of these wells, samples were taken in 2023, from 6 boreholes, which are principal resources of
water supplying Akbou region, to have a dataset composed from 15 chemical variables over the entire study area, which then,
exploited, and analyzed using multivariate statistical techniques.
The analysis is useful for the authorities to plan the supply of water to their populations, and rational use of groundwater
resources
Citation
M. FERHATI Ahmed, (2024-12-17), "Multivariate statistical analysis of groundwater quality in the Akbou region Bejaia", [national] FERHATI AHMED , Algerian Journal of Chemical Engineering
Assessing rain-induced soil erosion in sandy soils with variable plant densities
Citation
M. FERHATI Ahmed, (2024-12-16), "Assessing rain-induced soil erosion in sandy soils with variable plant densities", [international] FERHATI AHMED , M'sila
Evaluating flooding's role in groundwater recharge ogK'sob wadi Hodna area Algeria
Citation
M. FERHATI Ahmed, (2024-12-16), "Evaluating flooding's role in groundwater recharge ogK'sob wadi Hodna area Algeria", [international] FERHATI AHMED , M'sila
Groundwater quality assessment for drinking and irrigation purposes in Boumerdes Region, Algeria
Citation
M. FERHATI Ahmed, (2024-12-05), "Groundwater quality assessment for drinking and irrigation purposes in Boumerdes Region, Algeria", [national] FERHATI AHMED , Journal of Groundwater Science and Engineering
investigation the impact of rainfall intensity on flow properties
Citation
M. FERHATI Ahmed, (2024-10-31), "investigation the impact of rainfall intensity on flow properties", [national] FERHATI AHMED , BOUIRA
Application of water quality index to assess water quality for drinking and irrigation purposes of the groundwater of boumardase region, Algeria
Citation
M. FERHATI Ahmed, (2024-10-31), "Application of water quality index to assess water quality for drinking and irrigation purposes of the groundwater of boumardase region, Algeria", [national] FERHATI AHMED , BOUIRA
Flood risk mapping using multi-criteria analysis (MCA) through AHP method case of El-Ham wadi watershed of Hodna basin (Algeria)
mitigation have become a necessity. The purpose of this study is to develop updated and
accurate flood risk and hazard maps in the El-Ham watershed within the large Hodna basin
(Algeria). In order to achieve this objective and to select weights of contributing criteria
to flood risk, geographical information system and multi-criteria analysis along with the
application of analytical hierarchy process technique have been used. Factors considered to
be the cause of flooding are slope, annual maximum daily precipitation, drainage density,
elevation, land use/cover and soil type. In addition to the hazard, population density has
been also used to determine the risk of flooding in El-Ham watershed. The percentages
of weights obtained for each parameter are 39% for slope, 25% for drainage density, 18%
for rainfall, 9% for elevation, 6% for land use/cover and 3% for soil type. For validation of
these weights, a consistency ratio is then calculated. Main outcomes present a high flood
potential, especially in the North-Eastern, North-Western and Central part of the study
area. However, this high potential decreases further when one goes toward the South. This
research suggests that the chosen criteria are sufficient to obtain a reliable and simplified
flood risk map. Any additional parameters would add more details to the risk map using
hydraulic and/or hydrological models to generate flood hazard maps such as RRI and HECRAS models
Citation
M. FERHATI Ahmed, (2024-01-01), "Flood risk mapping using multi-criteria analysis (MCA) through AHP method case of El-Ham wadi watershed of Hodna basin (Algeria)", [national] FERHATI AHMED , Natural Hazards
Mapping of flood hazard in Elham Oudi
Citation
M. FERHATI Ahmed, (2023-11-02), "Mapping of flood hazard in Elham Oudi", [national] FERHATI AHMED , BOUIRA
Groundwater degradation in M'sila city
Citation
M. FERHATI Ahmed, (2023-11-02), "Groundwater degradation in M'sila city", [national] FERHATI AHMED , BOUIRA
Comparative Study of Different Discrete Wavelet Based Neural Network Models for long term Drought Forecastin
The main objective of this research is to look into the effects of various discrete wavelet families and the level of decomposition on the performance of WANN drought forecasting models that are developed for forecast drought in the Algerois catchment for long lead time. The Standard Precipitation Index (SPI) is used as a drought measuring parameter at three-, six- and twelve-month scales. Suggested WANN models are tested using 39 discrete mother wavelets derived from five families including Haar, Daubechies, Symlets, Coiflets and the discrete approximation of Meyer. Drought is forecasted by the best model for various lead times varying from 1-month lead time to the maximum forecast lead time. The obtained results were evaluated using three performance criteria (NSE, RMSE and MAE).
The results show that WANN models with discrete approximation of Meyer have the best forecast performance. The maximum forecast lead times are 36-month for SPI-12, 18-month for SPI-6 and 7- month for the SPI-3. Drought forecasting for long lead times have significant values in drought risk and water resources management.
Citation
M. FERHATI Ahmed, Souag-Gamane Doudja, Omar Djoukbala, , (2023-01-27), "Comparative Study of Different Discrete Wavelet Based Neural Network Models for long term Drought Forecastin", [national] Water Resources Management , Salim Djerbaoui
Historical evaluation and future projections of monthly precipitation and temperature under CMIP6 GCMs, case of Hodna basin (central Algeria)
models in reproducing the monthly cycle of precipitation and maximum surface air temperature of the Hodna region in
central Algeria during the baseline period 1901–2014. The six climate models selected are as follows: ACCESS-ESM4,
BCC-CSM2-MR, CanESM5, GFDL-ESM1-5, IPSL-EM6A-LR, and MIROC6. The best-performing models are determined
by comparing observation (CRU-TS) and historical data. The evaluation procedure is performed using the compromise
programming method and multiple statistical metrics including mean bias error (MB), root mean square error (RMSE),
and pattern determination coefcient (R2
). The frst two best-performing models are used for precipitation (IPSL-EM6ALR) and maximum surface air temperature (GFDL-ESM4). Four future periods are considered: 2021–2040, 2041–2060,
2061–2080, and 2081–2100 for SSP1-2.6 and SSP3-7.0. For the most optimist scenario, the maximum surface air temperature
may increase in the next decades in comparison with observed and simulated values by 2 °C, but then almost stabilizes and
reaches an average monthly increase of 28.53 °C. The same is shown in the precipitation projection of 48.75 mm/month
by 2100. Eventually, the SSP1-2.6 scenario does not show any current signs in the current Hodna basin climate on a global
scale. Future precipitation projections under Hodna’s SSP3-7.0 may decrease with an average value of 10 mm in a monthly
scale. This decrease becomes mostly in the center and southeastern parts. Maximum surface air temperature can rise steadily
from 28 to 31 °C and reach its maximum of 4.5 °C by 2100. The outcomes of this study will evaluate how projected changes
will afect droughts and foods.
Citation
M. FERHATI Ahmed, (2023-01-01), "Historical evaluation and future projections of monthly precipitation and temperature under CMIP6 GCMs, case of Hodna basin (central Algeria)", [national] Arabian Journal of Geosciences , Springer International Publishing
Comparative Study of Different Discrete Wavelet Based Neural Network Models for long term Drought Forecasting
Citation
M. FERHATI Ahmed, (2023), "Comparative Study of Different Discrete Wavelet Based Neural Network Models for long term Drought Forecasting", [national] Water Resources Management , 1
Water Erosion and Sediment Transport in an Ungauged Semiarid Area: The Case of Hodna Basin in Algeria
approaches. In the first model, the data of the gauged subbasins are extrapolated to the ungauged areas based on the homogeneity of factors that influence the water
erosion-sediment transport process. In this approach, the specific eroded and transported sediment yield in the Hodna basin is estimated to be 425 t/km2
/yr. In an alternative approach, the eroded yield is estimated by mapping erosion using the (RUSLE) in a GIS environment. The obtained results show a high eroded sediment
yield of approximately 610 t/km2 /yr. The observed difference between the results of the two approaches can be explained by the amount of sediment that is eroded but is not transported by runoff. These two methods show high eroded and transported sediment yield values in the Hodna basin region; these high yields may seriously threaten the central flat zone with progressive deposition.
Citation
M. FERHATI Ahmed, Omar Djoukbala, Hamouda Boutaghane, , (2022-01-01), "Water Erosion and Sediment Transport in an Ungauged Semiarid Area: The Case of Hodna Basin in Algeria", [national] Wadi Flash Floods , Omar Djoukbala
Peak flow assessment of El-Ham wadi in Hodna basin case study
Citation
M. FERHATI Ahmed, (2022), "Peak flow assessment of El-Ham wadi in Hodna basin case study", [national] Arabian Journal of Geosciences , 1
Application of Multivariate Statistical Methods to the Hydrochemical Study of Groundwater Quality in the Sahel Watershed, Algeria
Citation
M. FERHATI Ahmed, (2022), "Application of Multivariate Statistical Methods to the Hydrochemical Study of Groundwater Quality in the Sahel Watershed, Algeria", [national] Journal of Ecological Engineering , 1
Hydrogeochemical processes and multivariate analysis for groundwater quality in the arid Maadher region of Hodna, northern Algeria
Citation
M. FERHATI Ahmed, (2022), "Hydrogeochemical processes and multivariate analysis for groundwater quality in the arid Maadher region of Hodna, northern Algeria", [national] Acta Geochimica , 1
Spatio-temporal assessment of groundwater quality: a case study of M’sila province (Algeria)
Citation
M. FERHATI Ahmed, (2022), "Spatio-temporal assessment of groundwater quality: a case study of M’sila province (Algeria)", [national] Arabian Journal of Geosciences , 1
Suspended sedimentary dynamics under Mediterranean semi-arid environment of Wadi El Maleh watershed, Algeria
Citation
M. FERHATI Ahmed, Omar Djoukbaka, Hamouda boutaghane, Salim Djerbouai, , (2021-02-28), "Suspended sedimentary dynamics under Mediterranean semi-arid environment of Wadi El Maleh watershed, Algeria", [national] Modeling Earth Systems and Environment , Oussama BENSELAMA
Hydrochemical analysis of groundwater quality in central Hodna Basin, Algeria: a case study
Citation
M. FERHATI Ahmed, (2021), "Hydrochemical analysis of groundwater quality in central Hodna Basin, Algeria: a case study", [national] International Journal of Hydrology Science and Technology , 1
Physical and Chemical Quality of Surface Waters of the Wilaya de Bouira (Northern Algeria)
Citation
M. FERHATI Ahmed, (2018), "Physical and Chemical Quality of Surface Waters of the Wilaya de Bouira (Northern Algeria)", [national] Euro-Mediterranean Conference for Environmental Integration , 1
Utilisation de système d'information géographique (SIG) pour la quantification de l’érosion : Application dans un sous bassin versant montagnard le lac d’Ifni (Haut Atlas Marocain)
L’érosion des Bassins Versants représente un risque important pour l’environnement, le phénomène de l’érosion dans le sous bassin versant du lac d’Ifni a été apprécié sur la base d’une description des différents facteurs qui déterminent l’érosion au niveau du bassin versant. La lithologie, la pente et le couvert végétal, ainsi qu’à l’observation directe de l’érosion sur le terrain constituent ces différents facteurs.
Le bassin versant du lac se caractérise par un relief très accidenté avec des pentes fortes. La pente maximale est de l’ordre 80°, aussi les altitudes sont très variables, le point culminant du BV se trouve sur le Jbel Toubkal (4167 m).
D’une manière générale, les hautes altitudes sont caractérisées par un climat très froid et par la présence d’une couverture neigeuse pendant plusieurs mois par an. Le gèle et le dégel des formations rocheuses du bassin versant entraine l’accélération de la fissuration des blocs rocheux. Ce contraste topo-climatique, associés à l’action anthropique (exemple :déforestation) accélère l’érosion sur le bassin versant et entraine le comblement du lac par les produits d’érosion.
Notre objectif durant cette étude est de cibler les zones à risque majeur par l’érosion dans le bassin versant du lac d’Ifni et chercher des solutions adéquates pour minimiser le risque de ce phénomène.
La détermination de la sensibilité des sols à l’effet de l’érosion nécessite l’utilisation du système d'information géographique(SIG), pour quantifier et cartographier l’aléa de l’érosion hydrique au niveau du bassin versant du lac d’Ifni.
Mots clés : Système d’information géographique, quantification de l’érosion.
Citation
M. FERHATI Ahmed, KACEM Lamyaa, AGOUSSINE M'bark, IGMOULLAN Brahim, MOKHTARI Soraya, AMAR Hicham, , (2014), "Utilisation de système d'information géographique (SIG) pour la quantification de l’érosion : Application dans un sous bassin versant montagnard le lac d’Ifni (Haut Atlas Marocain)", [international] 2ème colloque international des utilisateurs des SIG ( Meknes GIS-USERS , Maroc
Modélisation d’infiltration à travers un barrage en terre
La modélisation des écoulements en milieux poreux à travers les massifs comme dans le cas d'un barrage en terre ; fait appelle au code de calcul (PLAXIS) qui offre la possibilité de modélisation de différentes structures, notamment en terre vue qu’il prend en charge la pression interstitielle due à l’écoulement souterrain et le calcul des déformations plastiques. La base de calcul de PLAXIS sont les relationnelles décrivant l’écoulement de l’eau dans la zone non-saturée obtenues par la combinaison de deux équations fondamentales : l’équation de Darcy généralisée et l’équation de continuité.
Mots clés : milieux poreux, barrage en terre, modélisation.
Citation
M. FERHATI Ahmed, Mitiche Katteb Ratiba, DJAFER KHODJA Hakim, , (2014), "Modélisation d’infiltration à travers un barrage en terre", [international] 3éme colloque internationale eau-climat , Tunisie
Modélisation mécanique et hydraulique de l’écoulement à travers un barrage en terre
Les milieux poreux sont omniprésents autour de nous, qu'ils soient naturels comme le sable, l’argile, les roches, ou manufacturés comme les bétons, les ciments, la céramique, etc. La dénomination de milieu poreux désigne une large palette de matériaux qui peuvent être très différents les uns des autres. Leur point commun est d’être composé d'une matrice solide et d'un espace poreux.
Dans notre cas d’étude, nous avons fait la modélisation des écoulements en milieux poreux à travers les massifs comme dans le cas d'un barrage en terre. Le code de calcul utilisé (PLAXIS) offre la possibilité de modélisation de différentes structures, notamment en terre vue qu’il prend en charge la pression interstitielle due à l’écoulement souterrain et le calcul des déformations plastiques. La base de calcul de PLAXIS sont les relationnelles décrivant l’écoulement de l’eau dans la zone non-saturée obtenues par la combinaison de deux équations fondamentales : l’équation de Darcy généralisée et l’équation de continuité.
Ce travail traite donc de la modélisation des écoulements et du comportement mécanique et hydraulique des barrages construits en terre et nous avons défini un cadre général dans lequel peut s'inscrire le calcul de ce type de structures : le couplage de la consolidation des sols et des écoulements à surface libre. Nous avons confronté une modélisation avec un cas réel d'ouvrage en terre. Nous avons montré notamment que l'on peut conduire de bout en bout le calcul de barrages réels et obtenir des résultats encourageants tant du point de vue hydraulique que du point de vue mécanique.
Mots clés : milieux poreux, barrage en terre, modélisation.
Citation
M. FERHATI Ahmed, MITICHE-KETTAB Ratiba, KACEM Lamyaa, , (2014), "Modélisation mécanique et hydraulique de l’écoulement à travers un barrage en terre", [international] 7éme Conférence international sur les ressources en eau dans le bassin Méditerranéen , Maroc
Modélisation d’écoulement dans un barrage poids
environments crosses the body of dam earth with clay core; the case study is stopping of
KRAMIS Wilaya de Mostaganem, this made by the computer code PLAXIS 8.5, such as code
is base by means of analyses in finite elements, starting from a mathematical aspect of the
modeling of the flows in saturated porous environments and not - saturated, it is made the
modeling of very which the ground like compressing relates to, consolidation, the points of
shearing, uplift....
For the confirmation of resulted to obtain by the plaxis we introduced code GeoStudio
the computer starts from SEEP/W that concerned primarily of flow, this even bases to him on
a means in element ends and of development of the equation of RICHARDS such as one
could leave the threads of current and the flow of flow.
Therefore, we knew the various basic concepts of ground and its structure; we see the
origin of the solid skeleton of porous environments by deterioration of the rocks.
various definitions of the porous environment and their properties thus the
characteristics hydraulics of the valiant knight mediums; potential of water in the porous ones.
Citation
M. FERHATI Ahmed, MITICHE KETTAB Ratiba, , (2013), "Modélisation d’écoulement dans un barrage poids", [international] C-EAU 2013 , Alger