Lower Ipc Dam

NEWFOUND RIVER· Grafton, New Hampshire· Built 1930· Concrete· 16 ft tall

Significant Hazard Recreation Private

Key Takeaway

Lower Ipc Dam is classified as significant hazard in New Hampshire. It was completed in 1930 and is 96 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height	16 ft (taller than 54.9% in NH)
Dam Length	87 ft
Dam Type	Concrete
Max Storage	6 acre-ft
Normal Storage	0 acre-ft

Surface Area	1 acres
Drainage Area	97 sq mi
Max Discharge	4,720 cfs
Year Completed	1930 (96 years old)
Year Modified	2006
NID ID	NH00480

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: No

Last Inspection: September 4, 2019

State Regulated: Yes

Regulatory Agency: NH DES

Ownership

NEWFOUND RIVER APARTMENTS 1 LP

Private

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Mountain Pond North Dam

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Mountain Pond South Dam

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Frequently Asked Questions

What is the hazard classification of Lower Ipc Dam?

Lower Ipc 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 Lower Ipc Dam?

Lower Ipc Dam is owned by NEWFOUND RIVER APARTMENTS 1 LP (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Lower Ipc Dam built?

Lower Ipc Dam was completed in 1930, making it 96 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 Lower Ipc Dam?

Lower Ipc 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 Lower Ipc Dam?

Lower Ipc Dam has a dam height of 16 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 Lower Ipc Dam last inspected?

Lower Ipc Dam was last inspected on September 4, 2019. 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.