Designation of Border Lake as a Class A provincial park followed recommendations from the Cassiar Iskut-Stikine Land and Resource Management Plan in 2001.
Border Lake lies within the asserted traditional territory of the Tahltan First Nation.
The highly productive lake and wetland complex in Border Lake Park is rich with conservation values. Plant communities include rare species, such as the yellow marsh-marigold, while grizzly bears find critical spring patch habitat in the valuable wetlands. Important fish habitat is provided to lake spawning sockeye salmon, a provincially significant sea-run cutthroat trout population, and an unusual anadromous cutthroat trout.
The remote wilderness of Border Lake Park is home to a wide range of wildlife. Grizzly bears rely on spring habitat within the park, while the wetland complex provides excellent waterfowl nesting and forage habitat. Significant resident and migratory fish populations are found in the waters in the park.