Thorndike Pond is a 249 acres (1 km²) water body located in Cheshire County

Cheshire County, New Hampshire

-Demographics:As of the census of 2000, there were 73,825 people, 28,299 households, and 18,790 families residing in the county. The population density was 104 people per square mile . There were 31,876 housing units at an average density of 45 per square mile...

 in southwestern New Hampshire

New Hampshire

New Hampshire is a state in the New England region of the northeastern United States of America. The state was named after the southern English county of Hampshire. It is bordered by Massachusetts to the south, Vermont to the west, Maine and the Atlantic Ocean to the east, and the Canadian...

, in the towns of Jaffrey

Jaffrey, New Hampshire

Jaffrey is a town in Cheshire County, New Hampshire, United States. The population was 5,457 at the 2010 census.The primary settlement in town, where 2,757 people resided at the 2010 census, is defined as the Jaffrey census-designated place and is located along the Contoocook River at the...

 and Dublin

Dublin, New Hampshire

Dublin is a town in Cheshire County, New Hampshire, United States. The population was 1,597 at the 2010 census. It is home to both the Dublin School and Yankee Magazine.-History:...

. The pond is located at the base of Mount Monadnock

Mount Monadnock

Mount Monadnock, or Grand Monadnock, is the most prominent New England mountain peak south of the White Mountains and east of the Massachusetts Berkshires, and is the highest point in Cheshire County, New Hampshire...

. Water from Thorndike Pond flows north via Stanley Brook, then east via Nubanusit Brook

Nubanusit Brook

Nubanusit Brook is a stream located in southern New Hampshire in the United States. It is a tributary of the Contoocook River, part of the Merrimack River watershed.Nubanusit Brook begins at the outlet of Nubanusit Lake in Nelson, New Hampshire...

 to the Contoocook River

Contoocook River

The Contoocook River is a river in New Hampshire. It flows from Pool Pond and Contoocook Lake on the Jaffrey/Rindge border to Penacook , where it empties into the Merrimack River. It is one of only a few rivers in New Hampshire that flow in a predominantly northward direction...

, a tributary of the Merrimack River

Merrimack River

The Merrimack River is a river in the northeastern United States. It rises at the confluence of the Pemigewasset and Winnipesaukee rivers in Franklin, New Hampshire, flows southward into Massachusetts, and then flows northeast until it empties into the Atlantic Ocean at Newburyport...

.

Whittemore Island is centrally located on the lake and contains a looping walking trail that is maintained by The Nature Conservancy

The Nature Conservancy

The Nature Conservancy is a US charitable environmental organization that works to preserve the plants, animals, and natural communities that represent the diversity of life on Earth by protecting the lands and waters they need to survive....

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