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@article{MKTS59877, author = {Indah Wahyuni and Sri Sachro}, title = {Pengaruh Perubahan Tutupan Lahan Terhadap Karakteristik Hidrograf Banjir (Studi Kasus Bendungan Jragung)}, journal = {MEDIA KOMUNIKASI TEKNIK SIPIL}, volume = {29}, number = {2}, year = {2024}, keywords = {Land cover change; curve number; impervious; flood hydrograph}, abstract = { Demak and Grobogan Regency are areas where a flood frequently happen during the rainy season. PUPR Ministry built the Jragung Dam for flood management which was planned using the 1998 - 2017 data series. The Jragung River discharge tends to experience an increase in a period of 10 years, with one possible cause is changes in land cover. Therefore, to determine the effect of land cover changes on the flood hydrograph characteristics of Jragung Reservoir, a flood tracking analysis was carried out in Jragung Reservoir. This study use the HEC-HMS program with the Soil Conservation Service (SCS - CN) method. and the land cover change index used was curve number and impervious. The results of the analysis show that there is a change in land cover in the Jragung Reservoir catchment area of 2,5%, which is dominated by an increase in residential area of 55,6%. As a result of conducted, the Jragung Reservoir catchment all n-year return periods flood discharge has increased from design year (2017) and latest year (2022). Q PMF increased from 1586,1 m 3 /s to 1689,6 m 3 /s which resulted in an increase in the Jragung Reservoir flood water level from planned Q PMF in +118,6 m become +118,7 m. }, issn = {25496778}, pages = {280--288} doi = {10.14710/mkts.v29i2.59877}, url = {https://ejournal.undip.ac.id/index.php/mkts/article/view/59877} }
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