The Canadian Hydrographic Service's gridded depths at 10 m and 100 m, downloaded from data.chs-shc.ca. Simpkin and Fader (2024) used the 10 m grid to map the drumlin shoals around the island; good for the seabed setting of the supposed flood tunnels and the sinkholes off South Shore Cove.
Oak Island money pitVersion 1.0Licence OGL-Canada-2.0 (with the CHS NONNA non-navigational licence)Updated 26 Oct 2026