Analysis of the impact of low impact development on runoff from a new district in Korea

Abstract

An analysis of the impact of a low impact development (LID) on runoff was performed using a Storm Water Management Model 5 (SWMM5)-LID model. The SWMM5 package has been developed to facilitate the analysis of the hydrologic impacts of LID facilities. Continuous simulation of urban stormwater runoff from the district which included the LID design was conducted. In order to examine the impact of runoff in the LID district the first, second and third highest ranked flood events over the past 38 years were analyzed. The assessment estimated that a LID system under historical storm conditions would reduce peak runoff by approximately 55-66% and runoff volume by approximately 25-121% in comparison with that before the LID design. The impact on runoff was also simulated under 50, 80 and 100 year return period conditions. Under these conditions, the runoff reductions within the district were estimated to be about 6-16% (peak runoff) and 33-37% (runoff volume) in comparison with conditions prior to the LID. It is concluded from these results that LID is worthy of consideration for urban flood control in future development and as part of sewer and stormwater management planning.

Hydrologic modeling of Low Impact Development systems at the urban catchment scale

“…Recently, modeling results demonstrate the beneficial uses of LID source control solutions at the catchment scale (Lee et al, 2013;Burszta-Adamiak and Mrowiec, 2013;Trinh and Chui, 2013). Ahiablame et al (2013) confirm that the application of rain barrels and porous pavements contribute to a runoff volume reduction ranging between 2% and 12% on a yearly basis.…”

Impacts of future climate change on urban flood volumes in Hohhot in northern China: benefits of climate change mitigation and adaptations

“…Further, constrained by the one-dimensional modelling approach using SWMM, the performance of LID measures was mainly evaluated according to their effects at reducing water volume from overloaded manholes (Oraei Zare et al, 2012;Lee et al, 2013). That is, the LID adaptation measure was mainly designed to reduce the amount of water rather than slowing down the water speed, which has been demonstrated to be effective at reducing urban floods (Messner et al, 2006;Ashley et al, 2007;Floodsite, 2009).…”

Effects of spatial configuration of imperviousness and green infrastructure networks on hydrologic response in a residential sewershed

“…At the catchment scale, GI has also been shown to result in detectable differences in hydrological response [ Shuster and Rhea , ; Loperfido et al ., ; Bhaskar et al ., ; Pennino et al ., ]. Urban hydrological modeling studies have demonstrated the effectiveness of GI at the catchment scale [ Gilroy and McCuen , ; Ahiablame et al ., ; Burszta‐Adamiak and Mrowiec , ; Lee et al ., ; Qin et al ., ; Palla and Gnecco , ]. The effect of spatial distribution of GI at the catchment scale has been identified and explored using two‐dimensional models [ Zellner et al ., ].…”