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Hydrology

Hydraulics

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Design

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OUR DESIGN SERVICES:


cbec provides design services in streams, rivers, estuaries and tidal zones. Including:


  • Restoration Design


  • These measures will improve a degraded system by reinstating natural processes
  • Modelling-based Habitat Design


  • We integrate hydraulic modelling with species habitat suitability indices, to determine the potential ecological outcome of physical modifications to river channels and floodplains.
  • Innovative Design


  • Our priority is to design sustainably maintained, healthy and diverse ecosystems, which do not require frequent intervention




EXAMPLE USES


Mains of Dyce


This channel, a 'daylighted' section of culvert constructed around a new housing development, did not consider geomorphic form or process. As we were undertaking the design, two periods of heavy rainfall occurred. Channel incision and head-cuts of up to 2.5m formed.

We based our design on what we saw first-hand, combining our geomorphic reconnaissance with hydrodynamic modelling and created a more sustainable solution, with greater ecosystem integrity.

Hydraulic velocity and shear stress prediction combined with field verification, lead to a step pool and inset floodplain design. While maintenance will always be required to varying degrees, this is a much more sustainable system with much cheaper maintenance.

 
Channel incision as a result of heavy rainfall.


Hydraulic model to inform design parameters.



Shear stress output to inform design materials.


Typical step-pool design.



Mains of Dyce Downstream View

Pre-Flood

 Post-Flood


Post-Construction Flood


Post-Construction



Current Conditions




Current Conditions, February 2014
Click the image to view current images:





Mains of Dyce Upstream View

Pre-Flood

 Post-Flood



Post-Construction


Current Conditions



Post-Construction Flood







River Cree

River Cree Weir Reduction

cbec proposed its client options for the reduction and/or removal of a series of weirs/groins in the lower reaches of the River Cree, Newton Stewart. The objective of the work is to reinstate a more natural sediment transport regime in the reach, ultimately resulting in a more diverse channel morphology.

An example CAD drawing of one of many design options




 
Hydrology, Hydraulics, Geomorphology, Design, and Field Services - these are our Technical Services. See our Focus Areas for how we combine them all...



Great minds think eco-like.
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