Spatial Analysis for Potential Water Catchment Areas using GIS: Weighted Overlay Technique

Awanda, Disyacitta; Nurul, H Anugrah; Musfiroh, Zahrotul; Dwi, Novi

doi:10.1088/1755-1315/98/1/012054

Cited by 4 publications

(3 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The slope of the geographical surface plays a significant role in the occurrence of floods (Hossain and Meng, 2020). The low slope areas can be categorized as high-risk flooding areas and high slope areas can be categorized as low-risk flooding areas (Awanda and Nurul, 2017; Rimba et al, 2017). The slope angles were selected based on combinations of literature and advises from field experts on this study area.…”

Section: Methodsmentioning

confidence: 99%

“…The input raster layers were obtained by integrating land use and land cover characteristics, soil type, slope angles, drainage density and rainfall. These layers were added to the weighted overlay tool in the overlay section of spatial analysis tools in ArcMap (Awanda and Nurul, 2017; González-Arqueros et al, 2018; Mukherjee and Singh, 2020; Ozkan and Tarhan, 2016). The ranking values and interpretations are presented in Table 3.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Impacts of floods on Colombo during two decades: Looking back and thinking forward

Dahanayake

Wickramasinghe

2022

Progress in Physical Geography: Earth and Environment

View full text Add to dashboard Cite

This research contributes to the current debate on linking flood events and developmental pressure in urban areas. Colombo District has faced frequent flood events during the last two decades which disrupted the socio-economic and environmental setup. Colombo district is the economic hub and the administrative capital of Sri Lanka and it is the area with highest population density in the country. It has experienced rapid urbanization and Land Use Land Cover Changes (LULC) during recent past. The new infrastructure project developments, expansion of impervious spaces, disturbances to the drainage systems have increased the occurrence of floods. This study was carried out to identify areas with the highest flood damage and attempted to find out any the link between population and land use changes with flood impacts from 1999 to 2018. We used Satellite images, Remote Sensing Techniques and Weighted Overlay method in Geographical Information System to detect the LULC change and the flood vulnerability together with population and disaster related data. The results show that north and western parts of Colombo district were mostly affected by floods. The areas with high flood vulnerability have increased by 1.29% while moderately vulnerable areas have increased by 3.76%, and low vulnerable areas have decreased by 5.04%. The total settlements in Colombo district have increased by 20.08% and have had significant increase by 29.60% in the areas with high flood impacts. The results of the present study highlight the threat of unsustainable urban expansion on floods and call for prompt management action for resilience.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Impacts of floods on Colombo during two decades: Looking back and thinking forward

Dahanayake

Wickramasinghe

2022

Progress in Physical Geography: Earth and Environment

View full text Add to dashboard Cite

show abstract

“…Several researchers had been chosen a variety of criterions for site selection of water harvesting. Tambo et al [23] in Tanzania and Mosase et al [24] in Botswana are choosing the criterion soil texture, soil depth, soil drainage, topography and land use for water harvesting. Singhai et al [25] additionally used surface runoff data and lineament (rock cleavages, fault, and fractures affect the groundwater recharge) of groundwater in the Bundelkhand region, India.…”

Section: Figure 6 Accuracy Assessment Reference Pointsmentioning

confidence: 99%

Suitability assessment for siting water harvesting ponds

Myagmartseren

Myagmarjav

2019

Mong. J. Agric. Sci.

View full text Add to dashboard Cite

This paper represents test results of methodology for identifying suitable sites for the water harvesting pondusing the "Multi-Criteria Analysis" in Geographical Information System. In order to do this, the objectives ofthe identification of harvesting sites were (i)to estimate constraint map (ii) to identify the multi-factor map and(iii) to measure the overall value of the suitability. According to the results of the assessment of the waterharvesting suitability, 10.23%or 173736 hectares area of Erdenetsagaan soum of Sukhbaatar aimag(province)are suitable, and 22.71% or 385534 ha area is moderately suitable, and 33.29%or 565198 ha land is limited forpond construction and 33.78% or 573532 ha territory is unsuitable for water harvesting.

show abstract

The Application of Remote Sensing and GIS Tools in Mapping of Flood Risk Areas in the Souss Watershed Morocco

Kasri

Lahmili

Bouajaj

et al. 2023

Lecture Notes in Networks and Systems

View full text Add to dashboard Cite

Spatial Analysis for Potential Water Catchment Areas using GIS: Weighted Overlay Technique

Cited by 4 publications

References 4 publications

Impacts of floods on Colombo during two decades: Looking back and thinking forward

Impacts of floods on Colombo during two decades: Looking back and thinking forward

Suitability assessment for siting water harvesting ponds

The Application of Remote Sensing and GIS Tools in Mapping of Flood Risk Areas in the Souss Watershed Morocco

Contact Info

Product

Resources

About