It has taken more than 15 years of consultations, protests, court battles and more consultations — and now a final plan for the future of the vast expanse of Yukon wilderness known as the Peel Watershed has been set.

The Peel Watershed Regional Land Use Plan was signed Thursday afternoon on the bank of the Stewart River in Mayo, Yukon. It was signed by the Yukon government and the Yukon First Nations of Na-Cho Nyäk Dun, Tr'ondek Hwëch'in and Vuntut Gwitchin, as well as the Gwich'in Tribal Council of the Northwest Territories.

According to a news release, the plan guides the future use of land and resources of 67,431 square kilometres of "ecologically sensitive" land in northern Yukon. That amounts to about 16 per cent of the territory.

"The way it finally worked out, to have the interests of the Yukon people and the interests of First Nations in this plan — to have that accepted and prevail — is fantastic," said David Loeks, who chaired the Peel Planning Commission, the independent body that handled the initial consultation and recommendations.

"To have this legacy of this large landscape well protected is equally wonderful."

Hikers relax in the alpine terrain above the Hart River in the Peel Watershed Region. Thursday's agreement covers future use of land and resources in about 16 per cent of the territory. (Juri Peepre)

The region is divided into 16 land management units, each of which will have specific recommendations around land use, conservation and monitoring. The units will include:

55 per cent: special management area

25 per cent: wilderness area

17 per cent: integrated management area

Three per cent: wilderness area — Boreal caribou

The wilderness area — Boreal caribou is a new designation to address Yukon's obligations to protect the caribou's habitat.

Disagreement between the Yukon government, conservationists and First Nations over how much of the watershed should be protected from industrial development went all the way to the Supreme Court of Canada.

The territorial government was found to have ignored its treaty obligations when, in 2012, it ignored the Peel Planning Commission's recommendations to protect about 80 per cent of the region from development, and instead presented its own plan that would have seen roughly 30 per cent of the region protected.

Tr'ondëk Hwëch'in Chief Roberta Joseph speaks at the ceremony. She said in a statement that the plan 'completes our journey to defend the integrity of our agreements.' (Steve Silva/CBC)

The attempt to subvert the protection of the Peel kicked off a widespread grassroots protest and created a flashpoint for First Nations-government relations in Yukon.

In 2017, the Supreme Court ordered the territorial government restart the process and follow its obligations to meaningfully consult First Nations — and respect the recommendations of that consultation. By that time, an election had ousted the Yukon Party, which had brought forward the controversial plan.

"After 15 years of controversy that led all the way to the Supreme Court of Canada, we have confirmed the integrity of our final agreements and the rights of our people to sit at the decision-making table when the fate of our ancestral lands is determined," said Na-cho Nyäk Dun Chief Simon Mervyn.

The Yukon chapter of the Canadian Parks and Wilderness Society held a silent vigil outside the Yukon courthouse in 2014, at the start of a trial over the Peel plan. (Philippe Morin/CBC)

Tr'ondëk Hwëch'in Chief Roberta Joseph said in the statement that this plan "completes our journey to defend the integrity of our agreements."

"It also protects an area of value to First Nations people, and I am so pleased the pristine nature of this landscape will exist for our citizens yet to come."

"This is truly a great day," Chief Mervyn said in the statement. "I am tempted to think that my work as chief is over; that I can kick back now and fade into oblivion knowing that my people have a sanctuary for future generations.

"But in truth, the real work is just beginning."

Celebrations were scheduled to follow the signing ceremony Thursday, including dinner and music at the community hall and a campfire hosted at the First Nation of Na-Cho Nyäk Dun's government house.