Data gathered according to the new USA National Phenology Network protocols are not yet available for download. It will eventually be available from the Download Data page of the USA-NPN website. The following list includes existing ("legacy") datasets in the Northeast region that were collected by individual groups using various methods.

• Harvard Forest
  • Spring and fall events; 33 native tree and shrub species
• Hubbard Brook Ecosystem Study
  • Spring and fall events; sugar maple, beech, yellow birch
• Vermont Monitoring Cooperative
  • Bud development; 5 native tree species
  • Fall color and leaf drop; 5 native tree species
  • Understory plant phenology; various species
  • Sugar maple bud phenology