Opportunity Mapping for Stage Zero Restoration in the Tweed Catchment
2022
Syed Azidi, Syed Al Aziz | Stuart, Neil
This research aims to formulate an approach that will allow for the opportunity mapping for stage zero river restoration in the Tweed catchment, in Scotland. The methodology developed first assesses the suitability of valley bottoms by taking into account their geomorphological features and anthropogenic constraints. The methodology then works on identifying relic stage zero river surfaces to be re established using the Geomorphic Grade Line (GGL) method and GIS tool developed by Powers et al, (2018). Results found 22 and 16 potential sites for stage zero river restoration in the Teviot and Till sub-catchments, respectively. A scoring system was developed to rank these identified potential sites in terms of restoration suitability. Site surveys and engagement with a local river restoration practitioner concluded that the developed methodology has successfully allowed for the opportunity mapping for stage zero river restoration. However, the methodology does not consider the restoration's feasibility. Hence, the results of this approach need to be combined with knowledge from local river restoration practitioners and stakeholders to conclusively identify sites for stage zero river restoration.
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