Overview
- New mapping settles decades of speculation by superseding 19th-century lead-line and a 1965 single-beam survey that likely overstated depths.
- The deepest point was pinpointed near the western shore on a bend about 4 kilometres north of the visitor centre.
- The 3D dataset resolves objects down to roughly 50 centimetres and reveals underwater cliffs, deep ravines, towering rock formations and fallen trees.
- Survey teams used the twin-hulled RV South Cape for deep-water passes and the 2‑metre Otter remotely operated vessel to map shallow and nearshore areas.
- Researchers worked through snow, big swells and blustery winds during the mapping and reported no evidence of a rumored lake monster.