Special Event

Event

Community Science Volunteer Day: Hemlock Wooly Adelgid Monitoring

Marsh - Billings - Rockefeller National Historical Park

Fee:

Free.

Location: LAT/LONG: 43.632612, -72.518322


Marsh-Billings-Rockefeller National Historical Park: Forest Center Parking for Marsh-Billings-Rockefeller National Historical Park is at Billings Farm & Museum, just off Route 12. To enter Marsh-Billings-Rockefeller National Historical Park from the Billings Farm & Museum, take the paved path next to the flag pole, walk up and cross Elm St via the crosswalk, take the right fork, and walk up the short trail to the Forest Center.

Dates & Times

Date:

Friday, April 3, 2026

Time:

9:00 AM

Duration:

4 hours

Type of Event

Volunteer Event

Description

Join natural resources staff to help monitor hemlocks for hemlock woolly adelgid (HWA) presence at both Marsh-Billings-Rockefeller NHP and Saint Gaudens NHP. We’ll be checking hemlock branches at 12 different monitoring locations at each park, so be prepared to hike over rough, steep, and uneven terrain in the snow. Please dress appropriately for outdoor weather. Bring a water bottle, snack, and snowshoes/microspikes if possible. This event will continue snow or shine!

Hemlock woolly adelgid (HWA) is an invasive aphid-like insect that feeds on hemlock trees, resulting in the tree’s defoliation and eventual death. While HWA has been confirmed in Windsor County, VT and Sullivan County, NH, we have yet to detect HWA at Marsh-Billings-Rockefeller NHP or Saint Gaudens NHP. Considering the substantial risks that HWA poses to our hemlocks, we conduct annual monitoring at our parks. Any early detection will allow us to protect these invaluable trees and we need your help!

We will have adult and children’s snowshoes as well as microspikes available if needed.

What to bring:

  • Winter boots (sneakers not recommended; expect snow)
  • Snowshoes or microspikes (if you have them)
  • Trekking poles (if you have them)
  • Water bottle
  • Snacks
  • Small day pack or hip pack
  • Warm clothing and layers

When:

  • Saint Gaudens National Historical Park: Thursday, April 2nd from 9:00 am to 1:00 pm
  • Marsh-Billings-Rockefeller National Historical Park: Friday and Saturday, April 3rd and 4th from 9:00 am to 1:00 pm

Feel free to join us for one, two, or all three days!

Where to Meet:

  • Saint Gaudens National Historical Park: Visitor Center
  • Marsh-Billings-Rockefeller National Historical Park: Forest Center
    • Parking for Marsh-Billings-Rockefeller National Historical Park is at Billings Farm & Museum, just off Route 12. To enter Marsh-Billings-Rockefeller National Historical Park from the Billings Farm & Museum, take the paved path next to the flag pole, walk up and cross Elm St via the crosswalk, take the right fork, and walk up the short trail to the Forest Center.

Cost: Free! Registration required. Register here.

Questions? Email mabi_visitorservices@nps.gov or call 802-457-3368. 

 


More information

Reservation or Registration: Yes

Spaces are limited. Please register in advance.