Tankerhoosen Lake North Dam

TANKERHOOSEN RIVER· Tolland, Connecticut· Built 1830· Earth· 16 ft tall
Significant Hazard Recreation State Government

Key Takeaway

Tankerhoosen Lake North Dam is classified as significant hazard in Connecticut. It was completed in 1830 and is 196 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 63.7% in CT)
Dam Length237 ft
Dam TypeEarth
Max Storage99 acre-ft
Normal Storage99 acre-ft
Surface Area17 acres
Drainage Area11 sq mi
Max Discharge1,257 cfs
Year Completed1830 (196 years old)
NID IDCT00623

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: Yes
Last Inspection: April 8, 2015
State Regulated: Yes
Regulatory Agency: DEEP

Ownership

Connecticut DEEP

State Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Tankerhoosen Lake North Dam?

Tankerhoosen Lake North 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 Tankerhoosen Lake North Dam?

Tankerhoosen Lake North Dam is owned by Connecticut DEEP (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Tankerhoosen Lake North Dam built?

Tankerhoosen Lake North Dam was completed in 1830, making it 196 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 Tankerhoosen Lake North Dam?

Tankerhoosen Lake North 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 Tankerhoosen Lake North Dam?

Tankerhoosen Lake North 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 Tankerhoosen Lake North Dam last inspected?

Tankerhoosen Lake North Dam was last inspected on April 8, 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.