scholarly journals Estimasi Volume Sedimentasi Waduk Sermo Menggunakan Metode RUSLE, Batimetri dan Angkutan Sedimen

2020 ◽  
Vol 3 (1) ◽  
pp. 39
Author(s):  
Annisa Wulandari ◽  
Bambang Kun Cahyono
Keyword(s):  
Sediment Transport ◽  
Catchment Area ◽  
Flood Control ◽  
Volume Estimation ◽  
Rainfall Erosivity ◽  
Water Runoff ◽  
Water Catchment Area ◽  
Sediment Volume ◽  
Water Catchment ◽  
Precision Test

Sermo Reservoir is a reservoir which was built by Indonesian Government and supported by Asian Development Bank in program Integrated Irrigation Sector Project (IISP) in 1996. Sermo Reservoir functions as a flood control, raw water source and irrigation. Changes that occur to water catchment area of the Sermo Reservoir affects its condition. Especially changes that occur in aspects of water runoff, sediment production and watershed deposition of watershed aspects which are caused by erosion in water catchment area resulting in sedimentation. Long term sedimentation causes a decrease in reservoir capacity. To overcome this problem it is necessary to estimate the sedimentation volume to determine the latest condition of the Sermo Reservoir. In this activity, volume estimation of sedimentation was conducted using RUSLE, bathymetry and sediment transport methods. The data used in this activity are the data in 2016, 2017 and 2018. In this activity, the analysis of the RUSLE method in the Ngrancah Watershed includes the factors of rainfall erosivity, soil erodibility, length and slope and land cover and preservation. In addition to RUSLE, an analysis was carried out using the bathymetry method. This method calculates sedimentation based on reservoir baseline DTM data of 2017 and 2018. From the difference between both DTM epochs, obtained sediment volume and spread of Sermo Reservoir. Besides, analysis of the sediment transport method was conducted using water soil content data of 2016 which is assumed static until 2018. While analyzing with RUSLE, bathymetry and sediment transport methods using ArcGIS Software. The results of volume estimation of sedimentation using RUSLE, sediment transport and bathymetry consecutively yields 184.158,580 m3/year, 163.151,173 m3/year and 149.959,800 m3/year. Thus the estimation results of sediment thickness velocity of Sermo Reservoir using RUSLE, bathymetry and sediment transport are 8,687 mm/year, 7,790 mm/year and 7,074 mm/year. Generated volume from the methods was tested by using precision test yielding RSD 8,407 % thus classified as low accuracy. From the precision test can be concluded that sediment transport was the most precise because it has a percentage difference of -0,766 % of the average sediment volume.

scholarly journals Diversity and ecology of araceae in the water catchment area of Ulu Sat, Kelantan, Peninsular Malaysia

2021 ◽  
Vol 756 (1) ◽  
pp. 012087
Author(s):  
H Zulhazman ◽  
E R Aweng ◽  
M A Mohamad-Faiz ◽  
A Muhamad-Azahar ◽  
H Kamarul-Ariffin ◽  
...  
Keyword(s):  
Catchment Area ◽  
Peninsular Malaysia ◽  
Water Catchment Area ◽  
Water Catchment

scholarly journals DAMPAK PERUBAHAN GUNA LAHAN TERHADAP KEMAMPUAN RESAPAN AIR (KASUS: KOTA SAMARINDA)

2019 ◽  
Vol 15 (1) ◽  
pp. 70 ◽  
Author(s):  
Warsilan Warsilan
Keyword(s):  
Land Use ◽  
Catchment Area ◽  
Infrastructure Development ◽  
City Development ◽  
Water Catchment Area ◽  
East Kalimantan ◽  
City Culture ◽  
Water Catchment ◽  
The Impact

As the capital of the province of East Kalimantan, Samarinda City developments has a rapid progress from year to year. Samarinda City Development has a tendency oriented towards infrastructure development without regard to the existence of the quality of the existing environment. Imbalance of development in Samarinda city is to start decreasing the water catchment area, so its make increasing intensity of flood in the Samarinda City. The purpose of this study was to analyze the impact of changes in land use in the Samarinda city on the ability of the water catchment area. This research method using descriptive approach, the data collection system of primary and secondary. Intensity flood in the Samarinda city  is increasing from year to year, this condition happened as a problem that always occurs during the rainy season. Current development trends, always take an area that should be an infiltration  area for Samarinda City. Culture and inadequate infrastructure conditions such as lack of system of drainage and polder, was another factor causing the high intensity of flood  in Samarinda City. Therefore, the relevant regulations development guidelines for Samarinda  City must consider all aspects of planning, in this case especially the important of a balance of cultivated land and protected areas or zones.Keywords: Changes in land use; intensity of puddles; Samarinda

Infections with multiple Cryptosporidium species and new genetic variants in young dairy calves on a farm located within a drinking water catchment area in New Zealand

2014 ◽  
Vol 202 (3-4) ◽  
pp. 287-291 ◽  
Author(s):  
Rima D. Shrestha ◽  
Alex Grinberg ◽  
Venkata S.R. Dukkipati ◽  
Eve J. Pleydell ◽  
Deborah J. Prattley ◽  
...  
Keyword(s):  
Drinking Water ◽  
New Zealand ◽  
Genetic Variants ◽  
Catchment Area ◽  
Cryptosporidium Species ◽  
Dairy Calves ◽  
Water Catchment Area ◽  
Water Catchment

Phosphate dynamics in the drinking water catchment area of the Dobromierz Reservoir

2016 ◽  
Vol 57 (53) ◽  
pp. 25600-25609 ◽  
Author(s):  
Jolanta Dąbrowska ◽  
Krzysztof Lejcuś ◽  
Magdalena Kuśnierz ◽  
Alicja Czamara ◽  
Joanna Kamińska ◽  
...  
Keyword(s):  
Drinking Water ◽  
Catchment Area ◽  
Water Catchment Area ◽  
Water Catchment

Balancing the Fate of Terbuthylazine in a Water Catchment Area by Immunochemical Screening

1998 ◽  
Vol 70 (1-4) ◽  
pp. 59-74 ◽  
Author(s):  
Rudolf J. Schneider ◽  
Alexander Wollweber ◽  
Britta Düren-Lancaster
Keyword(s):  
Catchment Area ◽  
Water Catchment Area ◽  
Water Catchment

Soil Contamination from Non-sanitary Waste Landfill in Langat Water Catchment Area, Malaysia

2015 ◽  
Vol 7 (6) ◽  
pp. 480-493 ◽  
Author(s):  
Sharifah Ismail ◽  
Che Ishak ◽  
Mohd. Samah ◽  
Erneeza Hatta ◽  
Aini Wahab
Keyword(s):  
Soil Contamination ◽  
Catchment Area ◽  
Waste Landfill ◽  
Water Catchment Area ◽  
Water Catchment

scholarly journals Accuracy of The Level of Critical Water Catchment Area for Flood Mitigation Around Bengkulu City, Indonesia

2021 ◽  
Vol 53 (2) ◽  
Author(s):  
Bambang Sulistyo ◽  
Hery Suhartoyo ◽  
Teguh Adiprasetyo ◽  
Kanang Setyo Hindarto ◽  
Noviyanti Listyaningrum
Keyword(s):  
Catchment Area ◽  
Flood Mitigation ◽  
Disaster Mitigation ◽  
Threshold Values ◽  
Reasonable Accuracy ◽  
Water Catchment Area ◽  
Catchment Areas ◽  
Flooded Area ◽  
Water Catchment ◽  
The City

Disaster mitigation activities require the availability of a potentially flooded area (PFA) map. One of the causes of flooding is the criticality of water catchment areas; the higher the criticality level, the higher the flooding potential. This study aims to determine the accuracy of the model for determining the PFA around Bengkulu City, which was derived from the Level of Critical Water Catchment Area (LCWCA) model developed by the Ministry of Forestry. After obtaining the LCWCA Map, another analysis was performed in order to obtain the PFA Map. Furthermore, the overlaying was carried out with the Existing Flood Map in such a way that the level of accuracy is known. The threshold values from Justice are used to justify the level of accuracy in three categories, namely Good (> 85%), Moderate (70 - 85%), and Poor (<70%). The results showed that in the eight sub-watersheds around the city of Bengkulu, there were two sub-watersheds with reasonable accuracy (> 85%), which means that there was > 85% overlap between areas on the Potentially Flooded Area Map as a result of the analysis of The LCWCA with the area on the Existing Flood Map. There are three sub-watersheds with Moderate accuracy (70 - 85%) and three sub-watersheds with Poor accuracy (<70%)

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