The Nisga'a Lisims Government provides links to:
Maps: http://www.nisgaalisims.ca/?page=government/lands/lands/maps
Land Use Plan: http://www.nisgaalisims.ca/?page=government/lands/lands/planning)

Also, the BC Government has maps of the 34 Nisga'a names that were adopted as part of the Nisga'a Treaty, 11 May 2000. Click upper or lower portion of map for a view of Nisga'a Lands, and to access details about each name.
http://ilmbwww.gov.bc.ca/bcnames/g2_nl.htm