New Jersey No Name # 71 Dam

Rockaway River-TR· Morris, New Jersey· Built 1901· Earth· 12 ft tall
Low Hazard Recreation Private

Key Takeaway

New Jersey No Name # 71 Dam is classified as low hazard in New Jersey. It was completed in 1901 and is 125 years old. Its primary use is recreation.

Physical Details

Dam Height 12 ft (taller than 31.2% in NJ)
Dam Length165 ft
Dam TypeEarth
Max Storage144 acre-ft
Normal Storage107 acre-ft
Surface Area17 acres
Drainage Area2 sq mi
Max Discharge9 cfs
Year Completed1901 (125 years old)
NID IDNJ00726

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 19, 2016
State Regulated: Yes
Regulatory Agency: NJDEP

Ownership

Estate of H.J. Koehler

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of New Jersey No Name # 71 Dam?

New Jersey No Name # 71 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 New Jersey No Name # 71 Dam?

New Jersey No Name # 71 Dam is owned by Estate of H.J. Koehler (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was New Jersey No Name # 71 Dam built?

New Jersey No Name # 71 Dam was completed in 1901, making it 125 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 New Jersey No Name # 71 Dam?

New Jersey No Name # 71 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 New Jersey No Name # 71 Dam?

New Jersey No Name # 71 Dam has a dam height of 12 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 New Jersey No Name # 71 Dam last inspected?

New Jersey No Name # 71 Dam was last inspected on July 19, 2016. 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.