The First Nations geograhphical region covered by PGNAETA is described as:
- North to Fort Ware (Kwadacha)
- East to Valemont Mcbride
(BC/Alberta border) - West to Fort Babine (Smithers)
- South to Hixon, BC.
The territory encompasses the following 17 First Nations:
- Burns Lake Band
- Cheslatta Carrier Nation
- Kwadacha Band
- Lake Babine Nation
- Lheidli T'enneh Band
- McLeod Lake Band
- Nadleh Whut'en Band
- Nak'azdli First Nation
- Nee Tahi Buhn Band
- Saik'uz First Nation
- Skin Tyee Band
- Stellat'en First Nation
- Takla Lake First Nation
- Tl'azt'en Nation
- Tsay Keh Dene Band
- Wet'suwet'en First Nation
- Yekooche First Nation
