Essays about: "urban runoff"

Showing result 1 - 5 of 90 essays containing the words urban runoff.

  1. 1. Modelling the risk of rainfall events leading to momentary pollution levels exceeding maximum allowed concentrations - A Swedish case study of urban runoff in the Fyris river

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Tove Gannholm Johansson; [2022]
    Keywords : urban runoff; flow; rain event; pollution concentration; EQS; MAC-EQS; dagvatten; flöde; regntillfälle; föroreningskoncentration; MKN; MAC-MKN;

    Abstract : The purpose of this study was (1) to study the proportion (X) of the flow in a watercourse that consists of urban runoff during a rain event and (2) to evaluate the risk that a few chosen pollutants, transported by urban runoff, exceed the maximum allowed concentration in the watercourse according to the environmental quality standards (MAC-EQS). The Fyris river in Uppsala, Sweden, was selected as a case study. READ MORE

  2. 2. How variations of the duration and time to peak of the Chicago Design Storm affect the hydraulic response, as well as the areas contributing to peak runoff, of a synthetic urban catchment area

    University essay from Uppsala universitet/Luft-, vatten- och landskapslära

    Author : Oskar Ahlstedt; [2022]
    Keywords : Avrinningsområde; översvämningsmodellering; peak-bidragande område; hydrograf; hyetograf; MIKE 21; regnintensitet; CDS-regn; Chicago Design Storm;

    Abstract : With an expanding urbanization in the world, and thus the expansion of impermeable surfaces, the risk of pluvial floods is an increasing factor that needs to be considered. This, in combination with increasing rain intensities and frequency of rain events indicates a problem both today and for the future. READ MORE

  3. 3. Efficiency of sustainable urban drainage systems during flash floods

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Snærós Axelsdóttir; [2022]
    Keywords : Bioretention Cell; Rain Garden; Infiltration Trench; Green Roof; Permeable Pavement; Stormwater runoff; Storm Water Management Model;

    Abstract : As the world’s population is migrating more into urban areas, landcover changes follow. Natural pervious areas are being converted to impervious areas, which when subjected to rain generates more stormwater runoff. READ MORE

  4. 4. Hållbar dagvattenhantering i mittrefug : en studie av Västra Ringvägen i Västerås

    University essay from SLU/Dept. of Urban and Rural Development

    Author : Ida Elgelind; Sandra Villner; [2022]
    Keywords : hållbar dagvattenhantering; mittrefug; gata; infiltrationsanläggning; gräsbeklätt dike; makadamdike;

    Abstract : Dagvattenhanteringen får allt större fokus i stadsplaneringen till följd av klimatförändringar och urbanisering. Städers kraftiga expansion med fler hårdgjorda ytor medför att den naturliga vattencykeln påverkas och större dagvattenmängder rinner av på ytan istället för att infiltrera. READ MORE

  5. 5. An analysis of the understanding of maintenance of nature-based solutions for urban stormwater management

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Emma Knapik; [2022]
    Keywords : Flood adaptation; resilience; sustainability; green infrastructure; uncertainty; Översvämnings anpassning; spänstighet; hållbarhet; osäkerhet;

    Abstract : Urban stormwater management is necessary to protect human life and society from the dangers and damages associated with flooding from extreme weather events. Conventional measures of stormwater management utilise grey infrastructure to convey runoff away from urban areas, but due to increasing urbanization, aging of urban infrastructure, climatic variability, and flooding due to extreme weather events, these measures are often no longer sufficient. READ MORE