Dampak Perubahan Tata Guna Lahan Terhadap Debit Puncak Di Sub Das Talang Kabupaten Jember

Putri, Dyah Ayu Intanasya; Widiarti, Wiwik Yunarni; Halik, Gusfan

doi:10.24002/jts.v16i1.4216

Cited by 3 publications

(3 citation statements)

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“…This causes an increase in discharge in a watershed, so an analysis is needed regarding the increase in discharge that occurs in that watershed. The method used in calculating the peak discharge is the HSS Snyder method, which is then analyzed for correlation using the regression equation to obtain the value of the correlation coefficient (Putri, 2019).…”

Section: Introductionmentioning

confidence: 99%

Parameters Cp and Ct in Snyder Synthetic Unit Hydrograph Due to Land Use Changes in Napel Sub-watershed, Bengawan Watershed

Barid,

Ichsan

2024

Astonjadro

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The parameters Cp and Ct depend on the characteristics and slope of the watershed. Watershed characteristics include types of land use that are always dynamic over time. The slope of the watershed affects the smoothness and velocity of runoff flow. The development of an area will cause changes in land use which tend to become more impermeable, of course also affecting the smoothness and speed of runoff flow. This of course results in changes in Cp and Ct in a watershed. Changes in land use in the Napel watershed within 7 years starting from 2015 to 2021 have decreased in areas of jungle forest and other water catchment areas. This research was conducted to determine the influence of land use change on peak discharge and Cp and Ct parameters. The method used is the Snyder Synthetic Unit Hydrograph, which has been tested for suitability against the Measured Unit Hydrograph with validation results included in the very strong correlation category. The Ct value used in 2015 was 1.65 and in 2021 it was 0.78 while the Cp value used in 2015 was 1.4 and in 2021 it was 1.1. The results of the analysis using the Snyder method produced a discharge of 417.882 m3/s in 2015 and 619.52 m3/s in 2021. The resulting discharge shows a significant increase.

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Section: Introductionmentioning

confidence: 99%

Parameters Cp and Ct in Snyder Synthetic Unit Hydrograph Due to Land Use Changes in Napel Sub-watershed, Bengawan Watershed

Barid,

Ichsan

2024

Astonjadro

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“…The method used to analyze peak discharge is Snyder SUH. Correlation analysis to obtain a more appropriate peak discharge value (Putri, 2019).…”

Section: Introductionmentioning

confidence: 99%

Increasing surface impermeability influences peak discharge with the Snyder method in the Ngadipiro sub-watershed of the Bengawan Solo watershed

Barid,

Setyaningrum

2024

E3S Web of Conf.

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This research was conducted to determine the effect of increasing soil impermeability in the Ngadipiro Sub-watershed on Cp and Ct numbers in 2015 and 2021. The measured unit hydrograph is used as a reference in calculating the Synder synthetic unit hydrograph method. Test the validation of the two methods using the correlation coefficient. The results of this study showed an increase in tightness in the form of an increased runoff coefficient from 0.26 in 2015 to 0.34 in 2021. This increase in tightness is also in line with the increase in peak discharge using the Measured unit hydrograph in 2015 of 73.3757 m3/s and 2021 of 139.1005 m3/s. The results obtained using the Snyder method obtained peak discharges in 2015 and 2021 of 75.10 m3/s and 148.89 m3/s. The results of the correlation test between the two methods obtained very strong correlation results with a 2015 R-value of 0.96 and a 2021 R-value of 0.92. The non-physical parameters of the watershed, namely Ct and Cp, were optimal in the Ngadipiro Sub-watershed in 2015, the Ct value was 2.2 and the Cp value was 0.9, while in 2021 the Ct value obtained was 1.3 and the Cp value was 1.1.

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“…The study found that flood discharge increased along with the LULC change from 1990-2009. The LULC change in Talang Watershed, Jember District (East Java Province) increased gradually by about 67.48% from 2009-2018 based on [3] study. [4] studied the flood discharge resulting from LULC change at Siak Watershed, Riau Province.…”

Section: Introductionmentioning

confidence: 99%

Integration of LULC change/prediction and hydrological modeler for assessment of the effect of LULC Change on peak discharge in Sari Watershed, Sumbawa Island, Indonesia

Setiawan

Nandini

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Flood is the main hazard that frequently occurs in Sari Watershed, Sumbawa Island, West Nusa Tenggara Province, Indonesia. The Land Use Land Cover (LULC) change, especially from the forest into non-forest coverage, may have contributed to the increased surface runoff and flooding frequency downstream. Because of the contradicting effects that these processes have on the risk of flooding, it is difficult to predict what the long-term impact of LULC changes will be on flooding in Sari Watershed. This study evaluated the effect of LULC change and prediction on peak discharge in the Sari watershed from 1990 to 2030. LULC maps of 1990, 1995, 2000, 2005, 2010, 2015, and 2020 were obtained by Landsat images classification, whereas 2025 and 2030 were from prediction. LULC change and prediction analysis used the ANN (Artificial Neural network)-CA (Cellular Automata) Markov model. Peak discharge for each year was calculated using the HEC-HMS model. The relationship between LULC change and peak discharge was analyzed with correlation analysis. The result showed that the trend of peak discharge dynamic was consistent with the tendencies of LULC change, particularly from forest coverage to non-forest coverage. Based on correlation analysis, the peak discharge dynamic correlated with the shift in LULC during the analysis period. The study result may provide a reference for flood risk reduction and LULC planning in Sari Watershed.

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Dampak Perubahan Tata Guna Lahan Terhadap Debit Puncak Di Sub Das Talang Kabupaten Jember

Cited by 3 publications

References 0 publications

Parameters Cp and Ct in Snyder Synthetic Unit Hydrograph Due to Land Use Changes in Napel Sub-watershed, Bengawan Watershed

Parameters Cp and Ct in Snyder Synthetic Unit Hydrograph Due to Land Use Changes in Napel Sub-watershed, Bengawan Watershed

Increasing surface impermeability influences peak discharge with the Snyder method in the Ngadipiro sub-watershed of the Bengawan Solo watershed

Integration of LULC change/prediction and hydrological modeler for assessment of the effect of LULC Change on peak discharge in Sari Watershed, Sumbawa Island, Indonesia

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