[4] Mills Lake within Edéhzhíe is an International Biological Program Site that is visited by as many as 50,000 lesser snow geese and 5,000 tundra swan during migration periods.

[2] On-the-land guardians with the Dehcho K’éhodi (Dene for taking care of the Dehcho) Stewardship Program monitor and co-manage the protected area alongside the Edéhzhíe Management Board and Canadian Wildlife Service.

Dehcho First Nations asked the Federal Court to overturn the order to remove subsurface mining in the Horn Plateau; in the court application, Dehcho First Nations stated that removing subsurface protection "was made without any consultation as required by law, and is regarded by the Dehcho First Nations as a complete betrayal of the letter and the spirit of the Protected Areas Strategy.

[10] In 2016, Dehcho First Nations and Government of Canada began working on an agreement for the establishment of Edéhzhíe.

[5][2] The Government of the Northwest Territories withdrew subsurface rights for the protected area indefinitely in 2020.