Griffith Dam

Rockaway River-TR· Morris, New Jersey· Earth· 9 ft tall
Low Hazard Recreation Private

Key Takeaway

Griffith Dam is classified as low hazard in New Jersey. Its primary use is recreation.

Physical Details

Dam Height 9 ft (taller than 12.9% in NJ)
Dam Length390 ft
Dam TypeEarth
Normal Storage54 acre-ft
Surface Area2 acres
Drainage Area0 sq mi
NID IDNJ00752

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: July 12, 2001
State Regulated: Yes
Regulatory Agency: NJDEP

Ownership

Hawk Hill, Inc.

Private

Nearby Dams

Old Morris Canal Dam

Morris, NJ

Significant Hazard 18 ft

Deer Pond Dam

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Dixons Pond Dam

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Wildwood Dike

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Intervale Lake Dam

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Wildwood Lake Dam

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High Hazard 13 ft

New Jersey No Name # 71 Dam

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Boonton Dam

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High Hazard 120 ft

Frequently Asked Questions

What is the hazard classification of Griffith Dam?

Griffith 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 Griffith Dam?

Griffith Dam is owned by Hawk Hill, Inc. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Griffith Dam?

Griffith 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 Griffith Dam?

Griffith 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 Griffith Dam last inspected?

Griffith Dam was last inspected on July 12, 2001. 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.