scholarly journals Analysis of Flood Vulnerability as a Support to Water Sensitive Urban Design Planning in Klaten Regency

2021 ◽  
Vol 26 (2) ◽  
pp. 183-193
Author(s):  
Desyta Ulfiana ◽  
Yudi Eko Windarto ◽  
Nurhadi Bashit ◽  
Novia Sari Ristianti
Keyword(s):  
Land Use ◽  
Urban Design ◽  
Flood Hazard ◽  
Flood Management ◽  
Flood Vulnerability ◽  
Geological Conditions ◽  
Order Preference ◽  
Water Sensitive Urban Design ◽  
High Flood ◽  
High Level

Klaten Regency is one of the regions that has a high level of flood vulnerability. The area of Klaten Regency which is huge and has diverse characteristics makes it difficult to determine an appropriate flood management model. Water Sensitive Urban Design (WSUD) is a model that focuses on handling water management problems with environmentally friendly infrastructure. Therefore, an analysis is carried out to determine the level of flood vulnerability and factors causing flooding to plan a WSUD design that is suitable for each sub-districts of Klaten Regency. The Analytical Hierarchy Process (AHP) and Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) methods are used to help the analysis. Aspects used as criteria are rainfall, slope, soil type, geological conditions, and land use. Based on the analysis, it could be concluded that Klaten Regency has two sub-districts with high flood hazard category, 21 sub-districts with medium category, and three sub-districts with low category. Bayat and Cawas are sub-districts that have a high level of flood vulnerability category. Meanwhile, Kemalang, Karangnongko and Polanharjo are districts with a low level of flood vulnerability category. The main factors causing flooding in Klaten Regency are slope and land use.

scholarly journals Towards risk-based flood management in highly productive paddy rice cultivation – concept development and application to the Mekong Delta

2018 ◽  
Vol 18 (11) ◽  
pp. 2859-2876 ◽  
Author(s):  
Nguyen Van Khanh Triet ◽  
Nguyen Viet Dung ◽  
Bruno Merz ◽  
Heiko Apel
Keyword(s):  
Land Use ◽  
Flood Risk ◽  
Large Scale ◽  
Flood Hazard ◽  
Mekong Delta ◽  
Flood Management ◽  
Paddy Rice ◽  
Rice Cultivation ◽  
Spatially Explicit ◽  
Risk Maps

Abstract. Flooding is an imminent natural hazard threatening most river deltas, e.g. the Mekong Delta. An appropriate flood management is thus required for a sustainable development of the often densely populated regions. Recently, the traditional event-based hazard control shifted towards a risk management approach in many regions, driven by intensive research leading to new legal regulation on flood management. However, a large-scale flood risk assessment does not exist for the Mekong Delta. Particularly, flood risk to paddy rice cultivation, the most important economic activity in the delta, has not been performed yet. Therefore, the present study was developed to provide the very first insight into delta-scale flood damages and risks to rice cultivation. The flood hazard was quantified by probabilistic flood hazard maps of the whole delta using a bivariate extreme value statistics, synthetic flood hydrographs, and a large-scale hydraulic model. The flood risk to paddy rice was then quantified considering cropping calendars, rice phenology, and harvest times based on a time series of enhanced vegetation index (EVI) derived from MODIS satellite data, and a published rice flood damage function. The proposed concept provided flood risk maps to paddy rice for the Mekong Delta in terms of expected annual damage. The presented concept can be used as a blueprint for regions facing similar problems due to its generic approach. Furthermore, the changes in flood risk to paddy rice caused by changes in land use currently under discussion in the Mekong Delta were estimated. Two land-use scenarios either intensifying or reducing rice cropping were considered, and the changes in risk were presented in spatially explicit flood risk maps. The basic risk maps could serve as guidance for the authorities to develop spatially explicit flood management and mitigation plans for the delta. The land-use change risk maps could further be used for adaptive risk management plans and as a basis for a cost–benefit of the discussed land-use change scenarios. Additionally, the damage and risks maps may support the recently initiated agricultural insurance programme in Vietnam.

scholarly journals Flood Hazard Assessment in Agricultural Areas: The Case of the District of Pélébina in the Municipality of Djougou, Bénin

2017 ◽  
Vol 13 (32) ◽  
pp. 235
Author(s):  
Luc O. Sintondji ◽  
Elliott R. Dossou-Yovo ◽  
Donald Akogou ◽  
Euloge K. Agbossou
Keyword(s):  
Smallholder Farmers ◽  
Flood Hazard ◽  
Pressure Sensors ◽  
Flood Management ◽  
Rain Gauge ◽  
Coefficient Of Determination ◽  
African Countries ◽  
Inland Valley ◽  
High Flood ◽  
Analysis System

Flood is a natural disaster and causes loss of life and property destruction. Its impacts are large on agriculture especially in West African countries where smallholder farmers account for 80% of all the farms. The objective of this study was to assess flood risks in the inland valley of Dosir located in the district of Pélébina, northern Benin. Rainfall, discharge and water level in the riverbed were monitored using rain gauge, acoustic current meter and pressure sensors, respectively. The hydrological functioning of the inland valley was simulated using the Integrated Flood Analysis System (IFAS) model. The calibration was done based on the land use map (GlobalMap) and the soil water holding capacity map (UNEP). Our study demonstrated the existence of a high flood hazard in the inland valley of Dosir which reacts very quickly to rainfall solicitations. The IFAS model has shown a good performance in simulating the runoff in the riverbed of the inland valley with a coefficient of determination of 0.65. The IFAS model can be used to design a flood management system in the district of Pelebina. Further studies are needed to assess the exposure and vulnerability of farmers to flood risk.

scholarly journals Flood Vulnerability Mapping Using Geographic Information System (GIS) in Gajah Wong Sub Watershed, Yogyakarta County Province

2020 ◽  
Vol 5 (1) ◽  
pp. 47
Author(s):  
A. Ardiansyah ◽  
Dyah Respati Suryo Sumunar
Keyword(s):  
Land Use ◽  
Information System ◽  
Geographic Information System ◽  
Soil Type ◽  
Geographic Information ◽  
Geography Education ◽  
Flood Vulnerability ◽  
Creative Commons ◽  
Buffer Analysis ◽  
High Flood

Gajah Wong Sub Watersheds frequently hit by floods which are potentially damaging. Therefore, a study on a flood vulnerability of the area is deemed necessary. This study aims to map floods vulnerability, to know the level and its spread in Gajah Wong Sub Watershed of Yogyakarta County Province by using Geographic Information System (GIS). The methods implemented in this study was weighing and scoring analysis and overlay of parameter attributes data of flood vulnerability framer, consisting of land use, slope of mountain, rainfall, soil type, geology, height of location and river buffer. Each parameter of flood vulnerability framer is classified based on the magnitude of effect towards flood vulnerability. The results of this study indicate that there were three levels of flood vulnerability in  Gajah Wong Sub Watershed, i.e. low flood vulnerability of 338.34 Ha (6.86%), medium flood vulnerability level of 4,595.62 Ha (93.13%) and high flood vulnerability level of  0.76 Ha (0.02%). Low flood vulnerability level is ditributed randomly to all areas of  Gajah Wong Sub Watershed cover of Ngaglik Sub-district, Depok Sub-district, small part of  Pleret Sub-district and was predominantly in  Banguntapan Sub-district, an area with rainfall. Medium flood vulnerability areas dominated Gajah Wong Watershed. Meanwhile, high flood vulnerability level occupied small portion of the area and spread in the southern part of Pleret Sub-district which was taken as the area of River Buffer analysis. Keywords: GIS; Gajah Wong; Sub Watershed; Yogyakarta.   Copyright (c) 2020 Geosfera Indonesia Journal and Department of Geography Education, University of Jember This work is licensed under a Creative Commons Attribution-Share A like 4.0 International License

scholarly journals Flood Hazard Zoning-mapping in Sigi District Central Sulawesi Using Geographic Information System

2020 ◽  
pp. 84-93
Author(s):  
Lilik Prihadi Utomo
Keyword(s):  
Land Use ◽  
Information System ◽  
Data Analysis ◽  
Flood Hazard ◽  
Hazard Zoning ◽  
Complex Approach ◽  
Zone Ii ◽  
High Level ◽  
Central Sulawesi ◽  
Very High

Flooding is a disaster that every year occurred in Sigi District. The research purpose is finding out the flood hazard zoning in the Sigi District. The type of research is descriptive qualitative, with a region complex approach. The variables used are slope, soil type, rainfall, and land use. Data analysis used overlay, scoring, and layout techniques. The result showed that Mapping of flood hazard zoning in Sigi Districts is divided into four zones, namely; 1) Zone IV is a zone with a very high level of flood hazard category, this zone has an area of 24505.62 Ha or 4.82%; 2) zone III, namely the zone with Danger flood hazard category has an area of 131587.86 Ha or 25.91%; 3) zone II, which is in the less dangerous category has an area of 350605.76 Ha or 69.03%; zone I with the non-hazardous category has an area of 1193.62 Ha or 0.24%.

scholarly journals EVALUASI POLA RUANG BERBASIS KERAWANAN BANJIR DI KABUPATEN PIDIE

2015 ◽  
Vol 17 (3) ◽  
pp. 130 ◽  
Author(s):  
Achmad Yamani ◽  
Ernan Rustiadi ◽  
Widiatmaka Widiatmaka
Keyword(s):  
Land Use ◽  
Spatial Pattern ◽  
Land Use Planning ◽  
Forest Cover ◽  
Flood Hazard ◽  
Multicriteria Analysis ◽  
Conservation Area ◽  
Flood Vulnerability ◽  
Factors Influencing ◽  
Hazard Area

Pidie is one of the districts in Aceh Province that has been suffering from flooding. Frequent disasters, especially flooding associated with various causative factors, need mitigation efforts. An appropriate land use planning by considering the risk aspects especially in flood is an important step. Objectives of this study are to determine the factors influencing the flood hazard, to map the areal distribution vulnerable to flood, to analyze the relations of land use in the flood hazard area, and to analyze the relations between the planned spatial pattern and the flood hazard area. ,Multicriteria analysis was used to determine the factors influencing the flood hazard. Spatial analysis was used in mapping the class of flood hazard, the relations of land use in the flood hazard area, and the relations between the planned spatial pattern and the flood hazard area. The results show that the main factors influencing flood vulnerability are land use/cover (0.408), rainfall (0.266), and slope (0.184). Based on the classification of flood vulnerability, the area can be divided into more vulnerable (37.75 %), less vulnerable (30 %), and mildly vulnerable (22.76 %). The vulnerability classes of the land use/cover are: less vulnerable (99.99 %) and more vulnerable (97.57 %) dominated by forest cover; mildly vulnerable (51.07%) and vulnerable (92.65%) dominated by mixed farming; and very vulnerable (97%) dominated by settlement. The flood vulnerability of the planned spatial pattern can be classified as follows: 95.44 % of the conservation area is dominated by less vulnerable and more vulnerable, while 71.20 % of the cultivation area can be categorized into mildly vulnerable, vulnerable and very vulnerable.

scholarly journals Flood Hazard and Risk Assessment Due to Land Use Changes in Purbalingga, Indonesia

2020 ◽  
Vol 9 (4) ◽  
pp. 1315-1318
Keyword(s):  
Risk Assessment ◽  
Land Use ◽  
Spatial Analysis ◽  
Urban Planning ◽  
Flood Hazard ◽  
Land Use Changes ◽  
Current Data ◽  
Projection Data ◽  
Flood Vulnerability ◽  
Hazard Zoning

Purbalingga Regency is one of the regencies in Central Java Province that has rapid growing in economic and tourism in accordance with comprehensive urban planning. Land use changes is an important aspect of urban planning. Therefore, spatial analysis is needed to highlight the problem of flooding in Purbalingga Regency. Spatial analysis performed for flood risk is a spatial analysis based on flood hazard zoning and flood vulnerability. Flood hazard zoning and flood vulnerability analysis were conducted using Analytical Hierarchy Process (AHP) and Geographic Information System (GIS) for existing condition, regarding current data and projection condition presented in Purbalingga Urban Planning 2011-2031. Result of flood hazard zoning analysis showed that for existing condition, Purbalingga Regency is mostly considered into the medium category of hazard category with an area of 62,652.077 ha. On the other hand, referring urban planning projection data 2031, there is a decrease in categories of low, medium, and high, but increase in very high and extreme category. Risk assessment shows that Purbalingga Regency currently has an extreme category with an area of 11,080.047 ha, including the proposed location of Wirasaba Airport.

scholarly journals Towards risk-based flood management in highly productive paddy rice cultivation – concept development and application to the Mekong Delta

2018 ◽  
Author(s):  
Nguyen Van Khanh Triet ◽  
Nguyen Viet Dung ◽  
Bruno Merz ◽  
Heiko Apel
Keyword(s):  
Land Use ◽  
Flood Risk ◽  
Large Scale ◽  
Flood Hazard ◽  
Mekong Delta ◽  
Flood Management ◽  
Paddy Rice ◽  
Rice Cultivation ◽  
Spatially Explicit ◽  
Risk Maps

Abstract. Flooding is an imminent natural hazard threatening most river deltas, as e.g. the Mekong Delta. An appropriate flood management is thus required for a sustainable development of the often densely populated regions. Recently, the traditional event based hazard control shifted towards a risk management approach in many regions, driven by intensive research leading to new legal regulation on flood management. However, a large-scale flood risk assessment does not exist for the Mekong Delta. Particularly, flood risk to paddy rice cultivation, the most important economic activity in the delta, has not been performed yet. Therefor the present study was developed to provide the very first in-sight on delta scale flood damages and risks to rice cultivation. The flood hazard was quantified by probabilistic flood hazard maps of the whole delta using a bivariate extreme value statistics, synthetic flood hydrographs, and a large scale hydraulic model. The flood risk to paddy rice was then quantified considering cropping calendars, rice phenology and harvest times based on a time-series of enhanced vegetation index (EVI) derived from MODIS satellite data, and a published rice flood damage functions. The proposed concept provided flood risk maps to paddy rice for the Mekong Delta in terms of expected annual damage. The presented concept can be used as a blueprint for regions facing similar problems due to its generic approach. Furthermore, the changes in flood risk to paddy rice caused by changes in land use currently under discussion in the Mekong Delta were estimated. Two land-use scenarios either intensifying or reducing rice cropping were considered, and the changes in risk were presented in spatially explicit flood risk maps. The basic risk maps could serve as guidance for the authorities to develop spatially explicit flood management and mitigation plans for the delta. The land-use change risk maps could further be used for adaptive risk management plans, and as basis for a cost-benefit of the discussed land use change scenarios. Additionally, the damage and risks maps may support the recently initiated agricultural insurance programme in Vietnam.

scholarly journals Pemodelan Spasial Bahaya dan Kerentanan Bencana Banjir di Wilayah Timur Kabupaten Cirebon

2019 ◽  
Author(s):  
Millary Agung Widiawaty ◽  
Moh. Dede
Keyword(s):  
Land Use ◽  
Road Network ◽  
Flood Hazard ◽  
Eastern Region ◽  
Infiltration Capacity ◽  
Flood Vulnerability ◽  
High Category ◽  
Vulnerability Model ◽  
Vulnerability Map ◽  
Very High

As a tropical climate region in the world, Indonesia has high vulnerable to floods disaster. In West Java, flood is annual disaster that occurs in the eastern region of Cirebon Regency. On 2018, there are thirteen sub-districts in the region have flood up to 2 meters. The study aims to determine the flood hazard and vulnerability in the eastern region of Cirebon Regency. The analysis of flood hazard includes six parameters such as elevation, slope, rainfall, infiltration capacity, distance to river, and surface runoff. Whereas, the flood vulnerability analysis includes parameters of land use, population, and road network. All parameters is analysed using overlay analysis with geographic information system to result the flood hazard and vulnerability model. The results shows the eastern region of Cirebon Regency has flood hazard in very high category reach 22.98 percent, high 33.54 percent, medium 21.80 percent, low 16.60 percent and 5.07 very low percent. Meanwhile, the flood vulnerability map show the cultivation land and built-up land use are most affected by the disaster. The potential number of vulnerable population is very high and high category reach 609,738 peoples who spread in the southeast of region. Whereas, the flood vulnerability to road network reach 3.3 to 6.84 km / km2. The flood hazard occurs in the alluvial plains, floodplains, and back swamps between Cisanggarung and Ciberes watersheds who known as suitable for settlement. Thus, up-land management is sustainable effort to resolve the problem.

A Study on Anthropogenic Activities Influencing Flood Vulnerability in Ala Riverfront Residential Areas of Akure, Nigeria

2020 ◽  
Vol 3 (4) ◽  
Author(s):  
Owoeye J. O. ◽  
Abe F. S. ◽  
Olasemojo R. O.
Keyword(s):  
Flood Hazard ◽  
Anthropogenic Activities ◽  
Data Gathering ◽  
Simple Random Sampling ◽  
Flood Management ◽  
Town Planning ◽  
Mitigation Measures ◽  
River Channels ◽  
Residential Areas ◽  
Flood Vulnerability

This research investigates the anthropogenic activities influencing flood vulnerability in Ala riverfront residential areas of Akure, Nigeria with a view to identify area susceptible to flood hazard in Ala river basin and to suggest possible mitigation measures. With respect to data gathering for the study, 265 questionnaires which amounted to 1% of the estimated research population were administered using simple random sampling. Although, 264 of the questionnaires were retrieved which were used for the analysis. Results from the survey revealed erection of buildings on riparian land and indiscriminate dumping of wastes into the river bodies leading to blockage of river channels and waterways. It also exposed community’s poor dispositions to flood forecasts and non-adherence to other flood management measures. The study concludes by recommending public enlightenment campaign to reduce resident’s vulnerability to flood disaster. It further advocates provision of waste management and drainage facilities as well as regular dredging of Ala watercourse to stimulate its absorptive capacity in the event of heavy downpour to reduce incidents of flooding. Ultimately, radical effort of town planning officers is needed to keep residents on their toes to ensure total compliance to all environmental regulations put in place to check the menace.

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