D Mill At Ticonderoga Dam

LACHUTE RIVER· Essex, New York· Built 1981· Concrete· 20 ft tall
Significant Hazard Hydroelectric Other Private

Key Takeaway

D Mill At Ticonderoga Dam is classified as significant hazard in New York. It was completed in 1981 and is 45 years old. Its primary use is hydroelectric. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 20 ft (taller than 56.3% in NY)
Dam Length363 ft
Dam TypeConcrete
Max Storage14 acre-ft
Normal Storage13 acre-ft
Surface Area2 acres
Year Completed1981 (45 years old)
NID IDNY14017

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 15, 2015
State Regulated: Yes
Regulatory Agency: NYS DEC

Ownership

ENEL GREEN POWER NORTH AMERICA, INC.

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of D Mill At Ticonderoga Dam?

D Mill At Ticonderoga 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 D Mill At Ticonderoga Dam?

D Mill At Ticonderoga Dam is owned by ENEL GREEN POWER NORTH AMERICA, INC. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was D Mill At Ticonderoga Dam built?

D Mill At Ticonderoga Dam was completed in 1981, making it 45 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 D Mill At Ticonderoga Dam?

D Mill At Ticonderoga Dam serves the following purposes: Hydroelectric, Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is D Mill At Ticonderoga Dam?

D Mill At Ticonderoga Dam has a dam height of 20 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 D Mill At Ticonderoga Dam last inspected?

D Mill At Ticonderoga Dam was last inspected on September 15, 2015. 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.