Tyler Tree Farm Dam

ROARING BROOK· Grafton, New Hampshire· Built 1969· Earth· 25 ft tall
Significant Hazard Fish And Wildlife Pond Private

Key Takeaway

Tyler Tree Farm Dam is classified as significant hazard in New Hampshire. It was completed in 1969 and is 57 years old. Its primary use is fish and wildlife pond. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 25 ft (taller than 80.2% in NH)
Dam Length285 ft
Dam TypeEarth
Max Storage116 acre-ft
Normal Storage10 acre-ft
Surface Area2 acres
Drainage Area3 sq mi
Max Discharge2,443 cfs
Year Completed1969 (57 years old)
NID IDNH00325

Safety Information

Significant Hazard

No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.

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

Emergency Action Plan: Yes
Last Inspection: August 25, 2022
State Regulated: Yes
Regulatory Agency: NH DES

Ownership

MR J THORNHILL 4TH

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Tyler Tree Farm Dam?

Tyler Tree Farm Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Tyler Tree Farm Dam?

Tyler Tree Farm Dam is owned by MR J THORNHILL 4TH (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Tyler Tree Farm Dam built?

Tyler Tree Farm Dam was completed in 1969, making it 57 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 Tyler Tree Farm Dam?

Tyler Tree Farm Dam serves the following purposes: Fish And Wildlife Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Tyler Tree Farm Dam?

Tyler Tree Farm Dam has a dam height of 25 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 Tyler Tree Farm Dam last inspected?

Tyler Tree Farm Dam was last inspected on August 25, 2022. 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.