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Evaluation of Rainfall Intensity and the Effectiveness of Green Infrastructure in Urban Water Management: A Case Study of the University of Kadiri Eko Siswanto; Sony Susanto; Fitry Rahmawaty
International Journal of Engineering Continuity Vol. 4 No. 1 (2025): ijec
Publisher : Sultan Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58291/ijec.v4i1.364

Abstract

Urban flooding in tropical regions like Indonesia is increasingly critical due to rapid urbanization and climate change, leading to reduced infiltration and overloaded drainage systems. This study analyzes rainfall intensity and drainage capacity at Kediri University using 15 years of daily maximum rainfall data and four statistical distributions Gumbel, Pearson Log III, Normal, and Log-Normal. Goodness-of-fit tests identify Pearson Log III as the best model for design rainfall estimation. Runoff discharge is calculated via the Rational Method and compared to the existing drainage capacity, revealing insufficient infrastructure for rainfall events with return periods over 10 years. To address this, the study evaluates infiltration wells as green infrastructure solutions, demonstrating their effectiveness in reducing runoff and enhancing groundwater recharge. This integrated approach bridges the gap between statistical rainfall modeling and practical drainage performance assessment in localized tropical urban contexts. The results offer actionable insights for sustainable stormwater management and flood mitigation on university campuses and similar settings, contributing both theoretically and practically to urban water management under evolving climatic challenges.
Easy Ways to Overcome Floods With an Economical Weir Form Rendy Kurnia Dewanta; Fitry Rahmawaty; Evita Fitrianis Hidiyati
LEADER: Civil Engineering and Architecture Journal Vol. 1 No. 5 (2023): December
Publisher : Fakultas Teknik Sipil dan Perencanaan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37253/leader.v1i4.8957

Abstract

The increased risk of flooding due to climate change is cause concern because it causes economic losses in various regions of the world. Flood control planning is needed so that floods that occur do not have a negative impact on life, especially in the economy. One way of flood control is to use weirs. Weirs are able to withstand the flow of water upstream of rivers or large waterways, limiting the flow of water entering downstream. By regulating the flow of water, the weir can reduce the possibility of flooding downstream. Part of the weir building is the threshold which has several commonly used shapes and each shape has its own advantages The purpose of this practicum is to determine the discharge of water flowing with thresholds, namely triangular thresholds and sharp thresholds with variations in door openings. The method used is to conduct testing in the Civil Engineering Laboratory using a replica of a river (open channel) along 10 meters. When testing the flow velocity is also calculated. The result of the test is obtained discharge data that flows with thresholds. The smallest flow discharge is obtained at the triangular threshold with a downstream opening of 1 cm. The effect of discharge on flood management is that if a river flow has a large discharge capacity, you can use the results of this calculation as a reference to overcome the problem.