Bathymetry of the Mactaquac headpond, NB, by the Ocean Mapping Group at UNB, revealing the former townsite of Culliton, near Nackawic, including its road and rail bridges.
The Ocean Mapping Group at UNB has released the Mactaquac bathymetry (depth of water) in a wonderful Google Map interface. A Nackawic resident sent it to me this morning with a story of how moving it was to see the former features revealed. I have been waiting a long time to see this, too, and it impresses with crisp 1.66 metre resolution detail. Little sedimentation is evident up against the dam wall, and islands, towns and former river channels remain intact. It will be interesting to navigate it in parallel with our , to decode some of the more curious shapes. The ‘illumination’ applied to provide a 3D effect has the visual effect of making it look inverted, (i.e. causeway lower than water channels). But this is a marvellous dataset which will enable important visualization work in the consideration of options for the Mactaquac dam.
