Mooball National Park supports one of the largest lowland moist forest vegetation remnants between the predominantly cleared Tweed and Brunswick Valleys. Subtropical rainforest occupies approximately one third of the park. Seventeen threatened plant species and 17 species of threatened animals have been recorded in the park. The presence of shells and the suitable habitat in the park suggest a high probability that the endangered Mitchell’s rainforest snail may also occur.
The New South Wales National Parks and Wildlife Act 1974 requires that a plan of management be prepared for each national park.
