Prioritization of sub-watersheds based on morphometric analysis using geospatial technique in Piperiya watershed, India

Chandniha, Surendra Kumar; Kansal, Mitthan Lal

doi:10.1007/s13201-014-0248-9

Cited by 81 publications

(30 citation statements)

References 23 publications

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“…Aplikasi dari Geographic Information System (GIS) untuk pengelolaan DAS (Strager et al, 2010;Magesh et al, 2013;Singh et al, 2014;Patel et al, 2015;Gelagay & Minale, 2016;Thakkar et al, 2017;Pande & Moharir, 2017;Rai et al, 2017;Chandniha & Kansal, 2017) dengan analisis tumpang susun peta dan skoring digunakan dalam penelitian ini. Peta tematik dioverlay untuk menentukan skor yang diperoleh.…”

Section: Pengumpulan Dataunclassified

Analysis of Characteristics and Typology of Mapili Watershed West Sulawesi Province

Isnan

Hasnawir

2018

JWAS

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ABSTRAKPermasalahan daerah aliran sungai (DAS) yang bersifat multisektor, multidisplin, multipihak, dan multidimensi adalah konsekuensi dari multifungsi DAS. Kompleksitas permasalahan ini menuntut suatu sistem dan pendekatan pengelolaan sesuai karakteristik dan tipologi DAS. Penelitian ini bertujuan untuk menganalisis karakteristik dan tipologi DAS Mapili Provinsi Sulawesi Barat. Penelitian ini dilakukan dengan metode survei, pengumpulan data sekunder dan data primer. Aplikasi dari geographic information system (GIS) dengan analisis tumpang susun peta dan skoring digunakan dalam penelitian ini. Hasil penelitian menunjukkan bahwa karakterisasi biogeofisik DAS Mapili yang meliputi meteorologi, morfologi, morfometri, hidrologi, kemampuan DAS dan karakterisasi sosial ekonomi, budaya dan kelembagaan mempengaruhi sistem penerapan pengelolaan DAS Mapili. Tipologi DAS Mapili diklasifikasikan menjadi 2 tipologi DAS, yaitu: tipologi II atau DAS yang memiliki jumlah penduduk tidak padat (97 jiwa/km 2 ) dengan curah hujan yang tinggi (>2500 mm/th); dan tipologi IV atau DAS yang memiliki jumlah penduduk padat (377 jiwa/km 2 ) dengan curah hujan yang rendah (<1500 mm/th). Kedua tipologi ini memiliki karakteristik permasalahan DAS yang berbeda. Tipolgi II umumnya berada pada daerah tengah dan hulu DAS Mapili, sedangkan tipologi IV berada pada daerah hilir DAS Mapili. Kata kunci: Karakteristik DAS, tipologi DAS, GIS, DAS Mapili ABSTRACT PENDAHULUANDaerah Aliran Sungai (DAS) merupakan suatu satuan ekosistem yang memiliki peranan penting bagi kehidupan (Halengkara et al., 2012). Secara umum DAS dapat dibagi menjadi tiga bagian yaitu DAS bagian hulu, DAS bagian tengah, dan DAS bagian hilir. DAS bagian hulu berdasarkan fungsi sebagai konservasi dikelola untuk mempertahankan kondisi lingkungan DAS agar tidak terdegradasi sedangkan DAS bagian tengah dan hilir didasarkan pada fungsi

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Section: Pengumpulan Dataunclassified

Analysis of Characteristics and Typology of Mapili Watershed West Sulawesi Province

Isnan

Hasnawir

2018

JWAS

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“…The study of flood and flood management strategies require the estimation of flow of water in river channels (Chandniha and Kansal 2017;Bouwer 2013). However, runoff estimation in ungauged stations is very challenging (Nyamathi and Kavitha 2013).…”

Section: Introductionmentioning

confidence: 99%

Flood risk analysis: causes and landscape based mitigation strategies in Dire Dawa city, Ethiopia

Erena

Worku

2018

Geoenviron Disasters

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Background: In flood prone areas, understanding flood causing factors, assessing the flood induced risks and adopting landscape based mitigation strategies can increase the knowledge, awareness and individual initiatives to protect themselves and their properties using appropriate flood management measures before and during flood events. Dire Dawa city is located in the foothill of southern mountains from where rivers crossing the city are originated. The multidimensional causes of flood hazard and limited landscape based mitigation strategies in the study area have worsen the impacts of flooding. This study was conducted in the Dire Dawa city watershed with the aims of assessing flood causing factors and to propose landscape based flood mitigation strategies. Results: To meet the intended objectives, the study employed the collection of both primary and secondary data. The primary data were collected from 110 households located in flood vulnerable villages. Moreover, the secondary data were collected from the Ethiopian Meteorology Agency, land use map of Dire Dawa city administration and government reports. Rainfall index method and descriptive statistics were used for analysis of primary data. The former was used to check the effect of intense rainfall and flood risk in terms of different duration yearly, monthly, daily and hourly basis, while the latter was used for identification of various factors precipitating flood risks of the study area. The analysis of secondary data employed morphometric analysis so as to identify flood susceptible subwatersheds. Findings of the study indicated that flood risk in the study area has resulted from multiple factors such as intense rainfall, topography, encroachment to the river banks, institutional problems and aggravating factors resulted from power interruption during heavy rain and regime changes. More importantly, flood risk of the study area was found to be sensitive to hourly variation of rainfall distributions and varies on the location of the sub-watersheds. Following that, flood susceptibility of sub-watershed was ranked based on linear and shape morphometric parameters where higher values of linear and lower values of shape parameters were attributed to high flooding risk. Based on the prioritization of sub-watersheds' susceptibility to flood risk through morphometric analysis, sub-watershed 5 and 18 were identified as the most flood risk susceptible watersheds demanding urgent landscape-based conservation measures. To this end suitable sites and sustainable water conservation structures are identified across the watersheds. Conclusion: Check dams, terracing, nala bunds, percolation tanks and storage tanks were proposed for different locations across the watershed as effective landscape-based flood risk mitigation strategies. The overall results of the study shows that managing the root causes of flooding at the upper catchments and adopting recommended proposed water conservation structures at proposed site helps to sustainably curb flood induced risks of Dire ...

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“…Several methods have been developed and elaborated for watersheds prioritization. Eleven of the twenty five studies (44% of the total) employed morphometric analysis method in prioritization [8] [27]. Whereas the other 14 studies (56% of the total) adopted the morphometric analysis method combined with one or two of the following methods, such as: sediment yield index method(SYI) [8] [22]; sediment production rate (SPR) method [28]; USLE/RUSLE models for estimating soil loss [7] [29] [30]; soil erosion susceptibility analysis [12]; runoff potential method [31]; land use/cover analysis [32] [33]; sediment yield index(SYI)and land use/cover [23]; weighted sum analysis technique [34]; fuzzy analytical hierarchy process [30] [35]; Snyder's method of unit hydrograph, and land use/cover [36].…”

Section: Introductionmentioning

confidence: 99%

Prioritization of Sub-Watersheds in a Large Semi-Arid Drainage Basin (Southern Jordan) Using Morphometric Analysis, GIS, and Multivariate Statistics

Farhan¹,

Anbar²,

Al-Shaikh³

et al. 2018

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GIS-based morphometric analysis was employed to prioritize the W. Mujib-Wala watershed southern Jordan. Seventy six fourth-order sub-watersheds were prioritized using morphometric analysis of ten linear and shape parameters. Each sub-watershed is prioritized by designated ranks based on the calculated compound parameter (Cp). The total score for each sub-basin is assigned as per erosion threat. The 76 sub-basins were grouped into four categories of priority: very high (12 sub-basins, 15.8% of the total), high (32 sub-watersheds, 42.1% of the total), moderate (25 sub-watersheds, 32.9% of the total), and low (7 sub-watersheds, 9.2% of the total). Sub-watersheds categorized as very high and high are subjected to high erosion risk, thus creating an urgent need for applying soil and water conservation measures. The relative diversity in land use practices and land cover, including variation in slope and soil types, are considered in proposing suitable conservation structures for sub-watersheds connected to each priority class. The adaptation of soil conservation measures priority-wise will reduce the erosivity effect on soil loss; while increasing infiltration rates; and water availability in soil profile. Principal component analysis (PCA) reduces the basic parameters and erosion risk parameters to three components, explaining 88% of the variance. The relationships of these components to the basic and erosion risk parameters were evaluated, and then the degree of inter-correlation among the morphometric parameters was explored. The verification of priority classes obtained through morphometric analysis was tested using Discriminant Analysis (DA)

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Prioritization of sub-watersheds based on morphometric analysis using geospatial technique in Piperiya watershed, India

Cited by 81 publications

References 23 publications

Analysis of Characteristics and Typology of Mapili Watershed West Sulawesi Province

Analysis of Characteristics and Typology of Mapili Watershed West Sulawesi Province

Flood risk analysis: causes and landscape based mitigation strategies in Dire Dawa city, Ethiopia

Prioritization of Sub-Watersheds in a Large Semi-Arid Drainage Basin (Southern Jordan) Using Morphometric Analysis, GIS, and Multivariate Statistics

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