Modeling the Impact of Land-Use Change on Water Budget of Gaza Strip

Hamad, Jehad T.; Eshtawi, Tamer; Abushaban, Almotasembellah; Habboub, Mohammed

doi:10.4236/jwarp.2012.46036

Cited by 16 publications

(4 citation statements)

References 4 publications

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“…There are different types of topsoil in the study area, and their spatial distribution was digitized using ArcGIS 10 based on the available soil data (Figure 4; Hamad et al, 2012;Dan et al, 1976). Brown Lithosols and Loessial arid brown soil consist mainly on steep, rocky and Regosols are shallow (0.5-1.5 m) young sandy deposits covering almost the whole landscape.…”

Section: Soilmentioning

confidence: 99%

Quantifying the impact of urban area expansion on groundwater recharge and surface runoff

Eshtawi¹,

Evers

Tischbein³

2015

Hydrological Sciences Journal

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In this surface water modeling study, a new spatial evaluation for assessing the impact of urbanization was applied for the semi-arid watersheds intersecting with the Gaza coastal aquifer. The SWAT model was calibrated and validated in a semi-automated approach for stream flow in the main watersheds. The results show that the model could simulate water budget components adequately within the complex semi-arid watersheds.Linear relationships between the change in urban area and the corresponding change in surface runoff or percolation were concluded for the urbanized subbasins. The urbansurface runoff index (USI) and the urban-percolation index (UPI) were developed to represent a micro-level evaluation of different urban change scenarios in the subbasins.The global urban-surface runoff index (GUSI) and the global urban-percolation index (GUPI) were derived as macro-level factors reflecting the influence on the overall Gaza coastal aquifer due to urban area expansion.

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Section: Soilmentioning

confidence: 99%

Quantifying the impact of urban area expansion on groundwater recharge and surface runoff

Eshtawi¹,

Evers

Tischbein³

2015

Hydrological Sciences Journal

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“…Aish et al, (2010) used the WetSpass model, under the umbrella of GIS, to evaluate groundwater recharge in the Gaza Strip. Hamad et al, (2012) investigated three different urbanization scenarios using the Automated Geospatial Watershed Assessment (AGWA) tool, which is a GIS-based model. Eshtawi et al, (2014) applied a new spatial evaluation for assessing the impact of urbanization for the semi-arid watersheds intersecting with the Gaza boundary using SWAT model.…”

Section: Introductionmentioning

confidence: 99%

Geo-spatial Assessment of Flood Vulnerability Areas of the Gaza Strip Towards Preparedness and Humanitarian Response Planning

Eshtawi

Abdellatif

Matar

2021

IJG

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Nowadays, flood and drought will become more common as climate change causes. Due to climate change consequences, flood occurrence and its impact on Gaza people have been of great concern to the Palestinian water authority, as it has a negative influence on various humanitarian and social issues. The hazards and damages resulted by flooding cause loss of life, property, displacement of people and disruption of socioeconomic activities. This research focuses on assessing Gaza Strip vulnerability to flooding using analysis of GIS-based spatial information. Not only did it consider the physical-environmental flood vulnerability, it also investigated social flood vulnerability aspects e.g., population densities. Soil and slope were considered to have the highest weight in the vulnerability mapping, as they represent the main factors in urban hydro-ecosystem structure. The long term average rainfall, a climate function factor, has the lowest weight, because it could be considered as a threat factor in addition to a vulnerability factor. This research demonstrates that urban area and population density as strong factors influencing flood vulnerability for humanitarian and saving life purposes. The findings of Geospatial analysis were used to map vulnerable areas likely to be affected in the event of flood hazard and suggest future interventions and related adaptation strategies in Gaza areas for flood mitigation.

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“…AGWA has been used to assess land use impacts on water resources in a number of studies (Hernandez et al, 2000; Miller et al, 2002; Baldyga et al, 2004; Kepner et al, 2004, 2009, 2012; Hamad et al, 2012; Nazarnejad et al, 2012; Baker and Miller, 2013; Burns et al, 2013; Barlow et al, 2014). Several studies to assess post-fire hydrological responses in watersheds have been conducted using AGWA (Canfield et al, 2005; Goodrich et al, 2005; Sidman et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Modeling Urban Hydrology and Green Infrastructure Using the AGWA Urban Tool and the KINEROS2 Model

Korgaonkar

Guertin

Goodrich

et al. 2018

Front. Built Environ.

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Urban hydrology and green infrastructure (GI) can be modeled using the Automated Geospatial Watershed Assessment (AGWA) Urban tool and the Kinematic Runoff and Erosion (KINEROS2) model. The KINEROS2 model provides an urban modeling element with nine overland flow components that can be used to represent various land cover types commonly found in the built environment while treating runoff-runon and infiltration processes in a physically based manner. The AGWA Urban tool utilizes a Geographic Information System (GIS) framework to prepare parameters required for KINEROS2, executes the model, and imports results for visualization in the GIS. The AGWA Urban tool was validated on a residential subdivision in Arizona, USA, using 47 rainfall events (June 2005 to September 2006) to compare observed runoff volumes and peak flow rates with simulated results. Comparison of simulated and observed runoff volumes resulted in a slope of 1.00 for the regression equation with an R2 value of 0.80. Comparison of observed and simulated peak flows had a slope of 1.12 with an R2 value of 0.83. A roof runoff analysis was simulated for 787 events, from January 2006 through December 2015, to analyze the water availability from roof runoff capture. Simulation results indicated a 15% capture of the average monthly rainfall volume on the watershed. Additionally, rainwater captured from roofs has the potential to provide for up to 70% of the domestic annual per capita water use in this region. Five different scenarios (S1 - base, S2 - with retention basins, S3 - with permeable driveways, S4 - with rainwater harvesting cisterns, and S5 - all GI practices from S2, S3, and S4) were simulated over the same period to compare the effectiveness of GI implementation at the parcel level on runoff and peak flows at the watershed outlet. Simulation results indicate a higher runoff volume reduction for S2 (53.41 m3 average capacity, average 30% reduction) as compared to S3 (average 14% reduction), or S4 (3.78 m3 capacity, average 6% reduction). Analysis of peak flows reveal larger peak flow reduction for S2. S3 showed more reduction of smaller peak flows as compared to S4.

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Modeling the Impact of Land-Use Change on Water Budget of Gaza Strip

Cited by 16 publications

References 4 publications

Quantifying the impact of urban area expansion on groundwater recharge and surface runoff

Quantifying the impact of urban area expansion on groundwater recharge and surface runoff

Geo-spatial Assessment of Flood Vulnerability Areas of the Gaza Strip Towards Preparedness and Humanitarian Response Planning

Modeling Urban Hydrology and Green Infrastructure Using the AGWA Urban Tool and the KINEROS2 Model

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