Williams Dam

Harihokake Creek· Hunterdon, New Jersey· Earth· 22 ft tall
Low Hazard Fire Protection Stock Or Small Fish Pond Private

Key Takeaway

Williams Dam is classified as low hazard in New Jersey. Its primary use is fire protection.

Physical Details

Dam Height 22 ft (taller than 79.5% in NJ)
Dam Length250 ft
Dam TypeEarth
Max Storage2.7K acre-ft
Normal Storage1.5K acre-ft
Surface Area1 acres
Drainage Area0 sq mi
Max Discharge238 cfs
NID IDNJ00895

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: August 21, 2001
State Regulated: Yes
Regulatory Agency: NJDEP

Ownership

John Lionetti

Private

Nearby Dams

Nishisakawick Creek Dam

Hunterdon, NJ

Low Hazard 23 ft

Jutland Dam

Hunterdon, NJ

Significant Hazard 24 ft

Asbury Mill Dam

Warren, NJ

Low Hazard 12 ft

Spruce Run Flow Measuring Weir Dam

Hunterdon, NJ

Low Hazard 9 ft

Clinton Mills Dam

Hunterdon, NJ

Significant Hazard 14 ft

Clinton Mills Dike

Hunterdon, NJ

Significant Hazard 8 ft

Spruce Run Reservoir Dam

Hunterdon, NJ

High Hazard 93 ft

Warren Mill Dam

Hunterdon, NJ

High Hazard 38 ft

Frequently Asked Questions

What is the hazard classification of Williams Dam?

Williams 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 Williams Dam?

Williams Dam is owned by John Lionetti (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Williams Dam?

Williams Dam serves the following purposes: Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Williams Dam?

Williams Dam has a dam height of 22 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 Williams Dam last inspected?

Williams Dam was last inspected on August 21, 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.