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All Journal Transformasi Masyarakat : Jurnal Inovasi Sosial dan Pengabdian Harmoni Sosial : Jurnal Pengabdian Dan Solidaritas Masyarakat
Eriani Ramadhianti
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Evaluasi Sosial-Teknis Nature-Based Solutions dalam Pengelolaan Limpasan pada Sistem Drainase Kawasan Pemukiman Berbasis Pemodelan EPA SWMM Willy Cahyadhiputra Gunawan; Eriani Ramadhianti; Ghidan Satya Kesuma; Moch Nabil Nugraha; Muhammad Tsaabitah Haulidan Putra; Rindu Damayanti; Nayla Hanna Ariza
Transformasi Masyarakat : Jurnal Inovasi Sosial dan Pengabdian Vol. 3 No. 3 (2026): Juli : Transformasi Masyarakat : Jurnal Inovasi Sosial dan Pengabdian
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/transformasi.v3i3.3408

Abstract

The expansion of built-up areas in residential environments increases impervious surface coverage, reduces infiltration capacity, and intensifies surface runoff. This condition highlights the need for drainage management approaches that do not rely solely on conventional channels but also incorporate Nature-based Solutions (NbS) to control stormwater at its source. This study evaluates the effectiveness of NbS in reducing surface runoff within the drainage system of the Sulaiman Air Force Base residential complex, Bandung Regency. The hydrological analysis included the calculation of design rainfall for a 5-year return period, rainfall intensity using the Mononobe method, and design discharge using the Rational Method. Hydraulic analysis of the drainage channels was conducted using Manning’s equation. The drainage system was evaluated using EPA SWMM under three scenarios: the existing drainage condition, drainage with NbS implementation, and drainage integrating NbS with storage. The NbS elements analyzed included bioretention cells, rain gardens, rain barrels, and storage facilities. The results show that NbS implementation can reduce peak runoff compared with the existing condition. The integration of NbS and storage produced the best performance by retaining runoff, increasing infiltration, and reducing the flow burden on the drainage network.
Evaluasi dan Design Ulang Drainase Jalan Raya untuk Meningkatkan Kinerja Hidraulik dan Mengurangi Risiko Banjir Lokal Eriani Ramadhianti; Willy Cahyadiputra Gunawan; Moch Anwar Fadhlurrahman
Harmoni Sosial : Jurnal Pengabdian dan Solidaritas Masyarakat Vol. 3 No. 1 (2026): Januari: Harmoni Sosial : Jurnal Pengabdian dan Solidaritas Masyarakat
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/harmoni.v3i1.3169

Abstract

Urban development has resulted in an increase in impermeable surfaces, increasing the risk of runoff inundating the road network. This situation occurs in the drainage system on Jl. Letjend S. Parman, Jl. Emo Kurniaatmaja, and Jl. Pulau Banda, Pasirkareumbi Village, Subang Regency. This study aims to evaluate the hydraulic performance of existing channels and develop redesign guidelines to reduce the risk of local flooding. The methods used include hydrological analysis of daily maximum rainfall data from the Subang rainfall station, rainfall frequency analysis using the Generalized Extreme Value (GEV) distribution, Intensity-Duration-Frequency (IDF) curves, and hydrological and hydraulic simulations using the Storm Water Management Model (SWMM). Model parameters include sub catchment area, rainfall intensity, time of concentration, infiltration using the Curve Number method, channel dimensions, cross-sectional shape, channel material, and the Manning coefficient. The results indicate that the GEV distribution provides a good fit for determining design rainfall. Based on the typology of a metropolitan city and a catchment area of ​​26.04 ha, the modeling period is 2 to 5 years. The SWMM simulation results indicate that some channel segments have very high flow velocities, potentially causing scour, while other segments have very low velocities, potentially causing sedimentation. This confirms the need for evaluation and restructuring of channel dimensions and slopes to improve the hydraulic performance of road drainage and reduce localized flooding.
Co-Authors Ghidan Satya Kesuma Moch Anwar Fadhlurrahman Moch Nabil Nugraha Muhammad Tsaabitah Haulidan Putra Nayla Hanna Ariza Rindu Damayanti Willy Cahyadhiputra Gunawan Willy Cahyadiputra Gunawan