Osgood Pond Dam

GREAT BROOK· Hillsborough, New Hampshire· Built 1861· Earth· 9 ft tall
Low Hazard Recreation Local Government

Key Takeaway

Osgood Pond Dam is classified as low hazard in New Hampshire. It was completed in 1861 and is 165 years old. Its primary use is recreation.

Physical Details

Dam Height 9 ft (taller than 10.9% in NH)
Dam Length150 ft
Dam TypeEarth
Max Storage270 acre-ft
Normal Storage57 acre-ft
Surface Area24 acres
Drainage Area5 sq mi
Max Discharge580 cfs
Year Completed1861 (165 years old)
Year Modified1989
NID IDNH00314

Safety Information

Low Hazard

No probable loss of human life and low economic/environmental losses expected.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: No
Last Inspection: September 21, 2017
State Regulated: Yes
Regulatory Agency: NH DES

Ownership

TOWN OF MILFORD

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Osgood Pond Dam?

Osgood Pond Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Osgood Pond Dam?

Osgood Pond Dam is owned by TOWN OF MILFORD (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Osgood Pond Dam built?

Osgood Pond Dam was completed in 1861, making it 165 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

What is the primary purpose of Osgood Pond Dam?

Osgood Pond Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Osgood Pond Dam?

Osgood Pond Dam has a dam height of 9 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.

When was Osgood Pond Dam last inspected?

Osgood Pond Dam was last inspected on September 21, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.