Natural Heritage and Reports

Mount Sunapee State Park is home to a significant natural community system, including rare ancient forest. According to the New Hampshire Natural Heritage Bureau (NHB) and its published reports, the state park contains a 484-acre exemplary northern hardwood-conifer forest system, the only such documented forest system in New Hampshire.

Image from Natural Heritage Bureau 2015 report shows the location of the exemplary natural community in Mount Sunapee State Park.

New Hampshire leased the stated-owned ski area at Mount Sunapee State Park to a private operator (Okemo Inc.) in 1998. The first state-sponsored natural heritage study at Mount Sunapee, conducted in 1998 by the Natural Heritage Bureau, produced a report in 1999 titled “Old Forest and Rare Plants at the Mount Sunapee Ski Lease Area” (pdf 5 MB).

Since 1998, NHB has conducted additional field evaluations at Mount Sunapee, resulting in published studies of the East Bowl (in 2003) and the proposed expansion area on the west side of the park (in 2004 and 2015).

Additionally, the NHB has documented and continues to monitor two state-threatened plants in the leasehold area: the bog twayblade and a population of the greater fringed-gentian (Gentianopsis crinita).

The NHB reports from 1999 and 2003 included specific conservation recommendations to protect New Hampshire’s natural heritage at the State Park. And the bureau provides specific recommendations to the resort operator to protect the bog twayblade and greater fringed-gentian.

Studies at Mount Sunapee State Park by the New Hampshire Natural Heritage Bureau

• Old Forests and Rare Plants at the Mount Sunapee Ski Lease Area – 1999 (pdf 5 MB)
• Findings and Conclusions Regarding Exemplary Old Forest in Polygon 23 – 1999 (pdf 2 MB)
• Natural Heritage Inventory of the East Bowl at Mount Sunapee State Park – 2003 (pdf 3 MB)
• Evaluation of Proposed Ski Lease Area Expansion on Mount Sunapee – 2004 (pdf 3.6 MB)
• Addendum to Evaluation of Proposed Ski Lease Area Expansion on Mount Sunapee – 2015 (pdf 1.1 MB)

This is a typical old-growth hardwood stand at Mount Sunapee State Park in the ski lease area. “Note various hardwood canopy species and a diverse canopy structure,” according to the Natural Heritage Bureau report (1999). Photo from the NHB 1999 report.

Responding to ski resort proposals, the NHB confirmed that “any development activities within Polygon 23 would have a detrimental effect on Mt. Sunapee’s old forests.” See NHB Inventory, F&L 1999 Memorandum (pdf 2 MB).

In 2003, the NHB recommended Natural Area designation of the East Bowl. See the NHB 2003 report (pdf 3 MB).

Then, starting in 2004, Okemo/Mount Sunapee Resort proposed master development plans for the expansion of the ski area. The development would cut through and fragment the forested western flank of Mount Sunapee State Park. This led to natural heritage field evaluations in 2004 and in November 2014 of the proposed expansion area.

The state’s report in 2004 documented exemplary forest of statewide significance in the proposed expansion area on the west side of Mount Sunapee State Park. See the NHB 2004 report (pdf 3.6 MB).

The 2015 report then confirmed and mapped the 484-acre exemplary northern hardwood-conifer forest system at Mount Sunapee State Park. This system includes three natural communities. See the NHB 2015 report (pdf 1.1 MB).

The exemplary northern hardwood-conifer forest system at Mount Sunapee (entered into the NHB database in 2004) is the only one of its type in New Hampshire and includes:

• high-elevation spruce-fir forest
• sugar maple-beech-yellow birch forest
• northern hardwood-spruce-fir forest

The 2015 report says:

“The sections of mature trees found in the exemplary natural community system add significant value to the larger forest mosaic of Mt. Sunapee. This mosaic in turn has a high ecological value because of its connection to the extensive Sunapee Highlands Corridor. Large, intact systems are more resistant to impacts from natural disturbance, insects and disease, and human disturbance.”

Additional Natural Heritage Bureau documents

Natural Communities of New Hampshire (pdf 2.4 MB)

Natural Community Systems of New Hampshire (pdf)

Rare Plants, Rare Animals, and Exemplary Natural Communities in New Hampshire – listed by town (pdf 1.7 MB)

Visiting New Hampshire’s Biodiversity: Old Forest In Franconia Notch State Park (pdf 1.4 MB)

Contact the NH Natural Heritage Bureau for more information about these reports.

The Natural Heritage Bureau is in the Division of Forests and Lands, PO Box 1856, Concord, New Hampshire 03302-1856. Phone (603) 271-2214.