Increasing Peak Flow of Snyder Synthetic Hydrograph Units in the Serenan Sub-Watershed of Bengawan Solo Watershed

Barid, Burhan; Afanda, Brillyana Okta

doi:10.32832/astonjadro.v11i3.7456

Cited by 4 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1 and 2) / , where A is the catchment area in square km and Cp is a regional constant [9] -Total Time Base: The total time base is the time it takes for the entire hydrograph to pass through the watershed[10] -Widths at 50% and 75% of Peak Flow Values: The widths at 50% and 75% of the peak flow values are useful for shaping the hydrograph. They are calculated using the equations W50=770(Qp/A)-1.08 and W75=W50/1.75, respectively [11]…”

Section: Study Areamentioning

confidence: 99%

Analysis of Flood Hydrograph Metro Sub Watershed with Synthetic Unit Hydrograph Snyder and SCS (Soil Conservation Service) Methods

Dewi,

Rahman,

Sholikhah

et al. 2023

E3S Web Conf.

View full text Add to dashboard Cite

Metro Sub-watershed is in Malang City. Based on data from BPBD Malang City, flood disasters have continued to increase from 2016 - 2022. The purpose of this research is to analyse the synthetic unit hydrograph (SUH) which will be used as the basis for planning water resources management. The rainfall data used in 2012-2021 with an average maximum rainfall height of 108 mm... Metro sub-watershed with an area of 31.371 km2 and a river length of 42 km and land use data with 59% of the residential. All data will be analysed for SUH in return periods Q2 = 2th, Q5 = 5th, Q10 = 10th, Q25 = 25th, Q50 = 50th, and Q100 = 100th. SUH analysis using HEC-HMS auxiliary program with Snyder and SCS (Soil Conservation Service) methods. The peak discharge results of the SUH in the Snyder method are Q2 = 47.8 m3/s, Q5 = 48.6 m3/s, Q10 = 50.7 m3/s, Q25 = 52.8 m3/s, Q50 = 54.1 m3/s, Q100 = 55.2 m3/s, and in the SCS method are Q2 = 37.5 m3/s, Q5 = 37.9 m3/s, Q10 = 39.8 m3/s, Q25 = 41.8 m3/s, Q50 = 43 m3/s, Q100 = 44 m3/s.

show abstract

Section: Study Areamentioning

confidence: 99%

Analysis of Flood Hydrograph Metro Sub Watershed with Synthetic Unit Hydrograph Snyder and SCS (Soil Conservation Service) Methods

Dewi,

Rahman,

Sholikhah

et al. 2023

E3S Web Conf.

View full text Add to dashboard Cite

show abstract

“…Estimating peak discharge poses a challenge for hydrologists due to the potential risks of overflow (Barid and Afanda, 2022;Imaaduddiin et al, 2022;Suharyanto, 2021). This crucial task involves determining the maximum volume of water flowing through a river or channel during a specific period, usually during extreme weather events such as heavy rainfall or snowmelt (Saadi et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Selecting the accurate hydrological method for estimating peak discharge in the Lesti River Catchment Area, Malang Regency, East Java Province, Indonesia

Iqbal,

Suharyanto,

Anwar

et al. 2023

JANS

View full text Add to dashboard Cite

Estimating peak discharge in the catchment poses a challenge for hydrologists due to the potential overflow risks. The present study examined various methods, including Synthetic unit hydrograph, Melchior, and Rational, to determine the peak discharge value in the Lesti River Catchment Area. Accurate hydrological input data is essential for effectively estimating peak discharge and mitigating potential damage or failure. Optimized physical parameters using geographic information systems are critical in generating peak discharge values, emphasizing their importance in the estimation process. The mean absolute percentage error (MAPE) and mean average error (MAE) were used to determine the accurate method for estimating peak discharge. Analysis results showed varied peak discharge values across different methods, and it found that the MAPE values ranged from 15.15% to 7.48% and the MAE values ranged from 1.47% to 0.63%, respectively. The Nakayasu synthetic unit hydrograph obtained the minimum error measure value compared to other methods by 7.48% in MAPE and 0.63% in MAE. Therefore, the MAPE and MAE performance considered that the Nakayasu was closely approximating the observed peak discharge and a relatively accurate method for estimating peak discharge in the Lesti River catchment area.

show abstract

“…Both central government and local government. Flood is a natural event that is difficult to predict (Alam MP, Lutfi M, 2016;Satriadi I, 2017;Immamuddin MI, Larasati L, 2021;Barid B, Afanda BO, 2022). However, floods can be mapped with a pattern of decreasing rainfall that repeats every year.…”

Section: Introductionmentioning

confidence: 99%

Ciliwung river normalization analysisusing HEC-RAS application (TB. Simatupang Bridge to Bidara Cina)

Imammuddin

Wicaksono

2023

astonjadro

View full text Add to dashboard Cite

Ciliwung River area which starts from TB. Simatupang Bridge to Bidara Cina is one of the areas that experienced severe flooding.This is caused by changes or conversion of land functions which were originally a water catchment area into settlements. Buildings that stand along the river body makes the current cross section of the Ciliwung River unable to function optimally in accommodating flood discharges. In addition, there is no public awareness in protecting the environment, it can be seen from the large piles of garbage on the riverside of the Ciliwung River.One of the efforts made by the government in flood control is river normalization, but in practice the normalization of the Ciliwung River can be said to be not running optimally. The purpose of this research is : the Author want to know how big the capacity of Ciliwung River existing cross section (starting from TB Simatupang Bridge to Bidara Cina) using Hec-Ras software application to modeling the river’s cross section existing and so does recording and mapping ofpotentialflood locations. Based on the hydrology calculation, known that flood discharge plan Q25is 404.3m3/s, while the hydraulic Q is only 79.03 m3/s, the Q total is 483,38 m3/s. The results of modeling using the Hec-Ras river cross section existingcannot accommodate the planned flood discharge so that river normalization efforts are needed. Recording and mapping flood locations are useful to get the effectivity of River’s normalization according to flood controlling at Ciliwung River (specific at TB Simatupang Bridge to Bidara Cina).

show abstract

Increasing Peak Flow of Snyder Synthetic Hydrograph Units in the Serenan Sub-Watershed of Bengawan Solo Watershed

Cited by 4 publications

References 0 publications

Analysis of Flood Hydrograph Metro Sub Watershed with Synthetic Unit Hydrograph Snyder and SCS (Soil Conservation Service) Methods

Analysis of Flood Hydrograph Metro Sub Watershed with Synthetic Unit Hydrograph Snyder and SCS (Soil Conservation Service) Methods

Selecting the accurate hydrological method for estimating peak discharge in the Lesti River Catchment Area, Malang Regency, East Java Province, Indonesia

Ciliwung river normalization analysisusing HEC-RAS application (TB. Simatupang Bridge to Bidara Cina)

Contact Info

Product

Resources

About