Today we’re moving out of the Elbow Basin and into the Highwood with a review of the flood mitigation proposals for High River. The Government of Alberta released a new report by Deltares which reviews the engineering study by AECOM and the Flood Management Master Plan by WorleyParsons.
The report makes some very direct recommendations on what should and should not be done next in the Highwood basin.
First, we recommend to not implementing the dry dams or southern diversion' schemes as studied by AECOM since they cannot be justified considering the societal costs and benefits of these measures. Secondly, we recommend being reluctant with regard to deliberately drawing more discharge into the little Bow since this may be considered morphologically unsustainable and not robust in view of uncertainty about design discharges. Instead we advise to try to further enhance the discharge capacity of the Highwood River through the town of High River itself by at least removing obstacles and perhaps reshaping (and maintaining) the.channel and floodplain morphology.
Excerpt from the Summary of the Review of Flood Mitigation Proposals for High River (Alberta, Canada) 2015 report by Deltares.
The full list of recommendations can be read in the report, starting on page 35.
Request for Feedback
If this report and its recommendations sound familiar to you it may be because the report was in the news during the stakeholder feedback stage. At this time feedback is requested from the broader public. As always, please comment below or email us your concerns, compliments, or other thoughts on this report. The period of feedback is open until April 30th.