Comprehensive Consulting Service on River Flow, Sediment and Contaminant Transport Modelling.

Examples of Previous Studies

Stability of contaminated sediments in the St. Mary’s River

I modelled whether the top layer of riverbed sediment in the St. Marys River would erode under different flows, ice scour, and changing water levels — potentially exposing more contaminated sediment beneath to aquatic life. Comparing predicted bed shear stress against the critical stress for erosion showed the deposits near the riverbanks to be stable, and the results helped shape management strategies for the contaminated sediment deposits.

Modelling of flows and sediment transport in a wildfire-impacted watershed in Alberta, Canada

After wildfires disturbed headwater streams of the Oldman River in southern Alberta, I modelled how the released fine sediment would travel downstream to the Oldman Reservoir — degrading water quality and raising water treatment costs. The modelling showed sediment from burned landscapes passes through the rivers with little deposition and settles in the reservoir, where burned sediment deposits differently from unburned material. The framework now serves as a decision-support tool for catchment planning.

Latest Blogs

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  How Does River Flow Modelling Help Prevent Environmental Disasters?April 30, 2026
  Summary: Understanding water flow, sediment dynamics and management of risk are vital components of river flow modelling. Such a knowledge  requires tools such as river dispersion modelling and contaminant transportContinue reading “How Does River Flow Modelling Help Prevent Environmental Disasters?”
• Coring of cohesive sediment depositsApril 28, 2026
  A device to collect cohesive sediment deposits for testing in the Rotating Annular Flume is described in this blog (https://www.researchgate.net/profile/B_Krishnappan). A photograph of the device is shown below: The cylindricalContinue reading “Coring of cohesive sediment deposits”
• In-situ Erosion FlumeApril 24, 2026
  Erosion-resistance of the cohesive sediment beds is governed by the presence of benthic organisms and biofilms in the sediment deposits. Determining the erosion resistance using the laboratory flumes may notContinue reading “In-situ Erosion Flume”