# Hydrologic-Hydraulic Evaluation of Mini Reservoir Integration for Urban Flood Mitigation Using SWMM: A Case Study of Panakkukang District, Indonesia
> Karamma R.

URL kanonis: https://discover.unhas.ac.id/publications/pub_scopus_105046659361
Jurnal / Konferensi: Civil Engineering and Architecture
Tahun terbit: 2026
DOI: https://doi.org/10.13189/cea.2026.140411
ISSN: 23321091
Kuartil SJR: Q2
Citations: 0

## Authors
- Karamma R.

## Abstract
Rapid urbanization and increasing extreme rainfall intensity have significantly amplified flood risks in compact tropical cities where drainage expansion is spatially constrained. Panakkukang District, Makassar, Indonesia, represents a typical high-impervious urban catchment (composite runoff coefficient ≈ 0.63) with flat topography and limited conveyance capacity. This study evaluates the hydraulic performance of integrating distributed mini-reservoirs into the existing drainage network using an integrated hydrologic-hydraulic modelling framework. Annual maximum rainfall data for 2015–2024 were analyzed using frequency analysis to derive the design storm, while runoff coefficients were estimated from land-cover characteristics. The hydrologic analysis indicates a 10-year design rainfall of 191.21 mm/day and a composite runoff coefficient of approximately 0.63 for the study area. SWMM simulation results show that the integration of mini-reservoirs reduced peak discharge by approximately 18–51% and delayed the time to peak by up to 3 hours, indicating improved hydraulic performance of the drainage system. These findings suggest that distributed mini-reservoirs can serve as a practical flood-mitigation strategy in dense tropical urban catchments, while also contributing to improved urban resilience and reduced flood exposure in residential areas.

## Keywords
- Environmental science
- Flood myth
- Surface runoff
- Urbanization
- Drainage
- Hydrology (agriculture)
- Flood mitigation
- Drainage network
- HEC-HMS
- Drainage basin
- Drainage system (geomorphology)
- Runoff curve number
- Resilience (materials science)
- Hydraulic structure
- Runoff model
- Water resource management
- Hydrological modelling
- Time of concentration
- Urban area
- Intensity (physics)
- Low-impact development
- Hydraulic engineering
- Structural basin
- Urban runoff

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Sumber: Discover Unhas — RIMS Universitas Hasanuddin.
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