Essays about: "HEC-RAS"

Showing result 1 - 5 of 19 essays containing the word HEC-RAS.

  1. 1. GIS-based approach to estimate direct economic damages of fluvial flooding under various future scenarios: A case study of the Neckar river basin (Germany)

    University essay from Lunds universitet/Avdelningen för Riskhantering och Samhällssäkerhet

    Author : Ruben Prütz; [2020]
    Keywords : climate change; flood damage; fluvial flood; GIS; HEC-GeoRAS; HEC-RAS; MOLUSCE; Neckar; river basin; stage-damage; strength of knowledge; Technology and Engineering;

    Abstract : Fluvial floods can cause significant damages to inundated assets. The frequency and magnitude of fluvial floods are related to precipitation amounts, which are expected to change throughout the 21st century due to global warming. READ MORE

  2. 2. Estimating the probability of levee failure for flood risk mapping : An application to Paglia River

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Theodora Neromylioti; [2020]
    Keywords : Levee failure; inner erosion; piping; backward erosion; seepage; probability of failure; fragility curves; time-dependent failure; hydraulic modelling; flood risk; flood inundation; HEC-RAS;

    Abstract : Climate change results to more extreme and frequent flood events that induce extra risk to flood protection structures such as levees. Thus, estimation of the probability of levee failure is of utmost importance when it comes to structural safety and flood risk assessment. READ MORE

  3. 3. Optimizing the design of two-stage ditches to improve nutrient and sediment retention

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Sofia Englund; [2020]
    Keywords : eutrophication; water quality; mitigation measure; two-stage ditch; retention time; water retention; nutrients; sediments; vegetation; terrace; HEC-RAS; Manning’s coefficient; water level; climate change; övergödning; vattenkvalitet; begränsande åtgärd; tvåstegsdike; retentionstid; vattenretention; näringsämnen; sediment; vegetation; terrass; HEC-RAS; Manning’s koefficient; vattennivå; klimatförändring;

    Abstract : Negative effects on water quality are created by eutrophication of the world’s water resources. Mitigation measures have been implemented, but poor improvements in water quality have been observed. Two-stage ditches have the possibility to increase nutrient and sediment retention to reduce eutrophication in receiving water bodies. READ MORE

  4. 4. Physico-chemical evaluation of the water quality in Rocha River: A qualitative and comparative analysis including aspects of social and environmental factors

    University essay from Lunds universitet/Teknisk geologi

    Author : Stina Jacobson; Ida Sekizovic; [2019]
    Keywords : Cochabamba; Rocha River; water quality analysis; water pollution; wastewater; regulations; ICO-index; Hec-RAS; minor field study; Earth and Environmental Sciences; Technology and Engineering;

    Abstract : In this study, a physico-chemical analysis of the Rocha River was performed during the beginning of the rainy season 2018 in order to examine the current state of the water quality in the river at six different locations. The river, located in the Cochabamba department, Bolivia, was examined from upstream in Sacaba to downstream in Sipe Sipe. READ MORE

  5. 5. Rainfall-Runoff Simulation and Modelling Using HEC-HMS and HEC-RAS Models: Case Studies from Nepal and Sweden

    University essay from Lunds universitet/Avdelningen för Teknisk vattenresurslära

    Author : Jeevika Khadka; Jagritee Bhaukajee; [2018]
    Keywords : HEC-HMS; HEC-RAS; Kankai; Kävlinge; Rainfall Runoff; Flood Inundation; Modelling; Technology and Engineering;

    Abstract : Floods are probably the most frequent, widespread and disastrous hazards of the world. Almost every year, Sweden and Nepal are affected by floods though their nature and impact differs due to complete different geographical and hydrological setting. READ MORE