Modelling the effects of changes in rainfall event characteristics on TSS loads in urban runoff

Abstract

The effect of changes in rainfall event characteristics on urban stormwater quality, which was described by total suspended solids (TSS), was studied by means of computer simulations conducted with the Storm Water Management Model for a climate change scenario for northern Sweden. The simulation results showed that TSS event loads depended mainly on rainfall depth and intensity, but not on antecedent conditions. Storms with low‐to‐intermediate depths and intensities showed the highest sensitivity to changes in rainfall input, both for percentage and absolute changes in TSS wash‐off loads, which was explained by the contribution of pervious areas and supply limitations. This has significant implications for stormwater management, because those relatively frequent events generally carry a high percentage of the annual pollutant load. Copyright © 2013 John Wiley & Sons, Ltd.

Effect of climate change on stormwater runoff characteristics and treatment efficiencies of stormwater retention ponds: a case study from Denmark using TSS and Cu as indicator pollutants

“…These findings are similar to those reported in the literature (e.g. Borris et al 2013; Deletic and Maksimovic 1998; He et al 2010). The rain intensity did however not show any effect on flow, TSS and Cu tot in the outlet from the pond (p > 0.05, R 2 in the range 0.0–0.5).…”

Modeling the Quality and Quantity of Runoff in a Highly Urbanized Catchment Using Storm Water Management Model

“…The initial values and range of values for Manning's roughness coefficient, the width of the overland flow path, depression storage, infiltration parameters of Horton's equation, and buildup and washoff parameters of pollutants were identified from the user's manual and previous studies before calibration [19][20][21] (Table 2).…”

Highway runoff quality models for the protection of environmentally sensitive areas

“…The kinetic energy imparted by rain drops to surficial particles imbues them with the ability to either become entrained or saltate off of the road surface (Alias et al, 2014). Along with RD, average event intensity has been identified as the most important physical variable affecting pollutant loads washing off of road surfaces (Borris et al, 2014). For impervious surfaces, the peak rainfall intensity is also closely related to the peak runoff rate, and hence entrainment capability.…”