Spatial Modeling For Flood Risk Reduction In Wanggu Watershed, Kendari

Fadlin, Feri; Thaha, Muhammad Arsyad; Maricar, Farouk; Hatta, Mohammad

doi:10.14445/22315381/ijett-v70i12p222

Cited by 2 publications

(3 citation statements)

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“…The average annual rainfall is 2102 mm/year and temperatures range from 27,10 • C -30,60 • C. The rainy season occurs from November to March and the dry season occurs from May to August (Kandari et al, 2019). The Wanggu Watershed has experienced changes in land cover characteristics that can affect changes in hydrological characteristics which are characterized by high erosion, flooding, and sedimentation (Fadlin et al, 2022;Saleh and Setiadi, 2020).…”

Section: Research Areamentioning

confidence: 99%

“…Flooding is the occurrence of an area or plains inundated by water in large quantities beyond normal natural limits due to an increase in the volume of water in water bodies such as rivers and lakes (Dadson et al, 2017). In the Wanggu Watershed, recent flood events have increased in frequency due to the high flow coefficient due to increased human settlement activity (Fadlin et al, 2022). Flood events in the Wanggu watershed as one of the parameters in the water system indicator are very important in determining the carrying capacity of the watershed (Table 8).…”

Section: Floodmentioning

confidence: 99%

“…Significant impacts due to land degradation are reductions in soil porosity, soil organic matter, vegetation land cover, and soil infiltration. This is closely related to the disruption of hydrological functions, namely the increased frequency of floods and high sediment loads in the Wanggu Watershed (Alwi et al, 2021b;Fadlin et al, 2022). The floods that occurred in the Wanggu watershed have damaged public facilities and infrastructure, rice fields, gardens, and residential land, especially in the downstream areas of the watershed (Kandari et al, 2019;Saleh and Setiadi, 2020).…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Wanggu Watershed Carrying Capacity on Water System Indicators in Southeast Sulawesi, Indonesia

2023

indones. j. env. man. sus.

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The water system or hydrological indicators determine the good and bad of a watershed’s carrying capacity. The hydrological indicators include discharge fluctuations, annual flow coefficient, sediment load, flood frequency, and water use index. The purpose of this study was to evaluate the carrying capacity of the Wanggu watershed based on hydrological indicators. The method used is the score and weight method for all hydrological indicator data in accordance with the watershed evaluation guidelines for hydrological indicators. The research data is sourced from primary data and secondary data. Primary data comes from direct observation, while secondary data comes from agencies related to this research. Data analysis using Microsoft Excel in monthly and annual data analysis by producing tables and figures. The results of this study indicate that fluctuations in discharge or the regime coefficient of the Wanggu River Basin are 96.45 which are classified as high, as well as erosion and surface runoff, namely sediment load conditions of 19.73 which are also included in the high category. While the value of the annual flow coefficient is 0.32, the average frequency of flooding every year occurs once in two years and the water use index is 0.69. The three parameters are categorized as being in the middle class. From the accumulated weights and scores of all water system indicator parameters, a value of 111.25 is included in the bad class category. So the Wanggu watershed has a poor carrying capacity value from the water management indicator.

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Section: Research Areamentioning

confidence: 99%

Section: Floodmentioning

confidence: 99%