Dependable flow analysis in the technical study of sand, gravel, and river Stone mining in the Ongkag Dumoga River

The Ongkag Dumoga River is located in Bolaang District, Bolaang Mongondow Regency, North Sulawesi. Sedimentation that occurs downstream of the Ongkag Dumoga River is an accumulation of sediment transport carried by river flows from upstream. Therefore, a hydrological analysis was carried out. In con...

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Bibliographic Details
Main Authors: Malik, Abdul, Rahayu, Diana, Chumaedi, Irpan, Nuruzzaman, Muhammad, Nur, Nuzulul Alifin
Format: Conference Proceeding
Language:English
Subjects:
Boundary conditions
Discharge
Hydrological analysis
Hydrology
Mathematical analysis
River flow
Sediment transport
Sediments
Time series
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Summary:The Ongkag Dumoga River is located in Bolaang District, Bolaang Mongondow Regency, North Sulawesi. Sedimentation that occurs downstream of the Ongkag Dumoga River is an accumulation of sediment transport carried by river flows from upstream. Therefore, a hydrological analysis was carried out. In contrast to flood analysis, which requires a planned discharge in short intervals [hours or days], for sediment analysis we need discharge data with long time series [weeks, months, or years]. Due to the gradual movement of sediments, the discharge boundary conditions must also be able to capture the phenomenon of sediment movement over a long period of time. To meet the need for debit data with a long time series, the mainstay discharge is calculated. From the results of the calculation of the FJ discharge. Mock, the results of the simulation discharge time repeat Q40 is 52.39 m3/s, Q50 is 42.20 m3/s, Q60 is 40.22 m3/s, Q70 is 39.10 m3/s, Q80 is 32.87 m3//s, and Q90 is 30.04 m3/s. From the calculation results, it is shown that the availability of water will decrease slowly.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0130136