This report constitutes the third full report of annualized inventory on New York forest land and summarizes field data collected from 2011 through 2017. New York has 18.7 million acres of forest land on which 94 tree species and 55 forest types were identified. Net cubic-foot, growing-stock, and sawtimber volumes continued to increase, as did the area occupied by large diameter stands. The net growth-to-harvest removals ratio increased from 2.3:1 in 2012 to 2.8:1 in 2017. Substantial forest health challenges, including invasive insect pests and invasive plant species, continue to impact the forest resources of the State. Additional information on land-use change, fragmentation, ownership, forest composition, structure, age, carbon stocks, reserved land, and regeneration of New York forests