Lewis Dam

Osborne Branch· Transylvania, North Carolina· Earth·
High Hazard Recreation Private

Key Takeaway

Lewis Dam is classified as high hazard in North Carolina. Its primary use is recreation. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.

Physical Details

Dam Length150 ft
Dam TypeEarth
Max Storage10 acre-ft
Normal Storage8 acre-ft
Surface Area1 acres
NID IDNC04356

Safety Information

High Hazard

Loss of human life is likely if the dam fails.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: No
Last Inspection: November 17, 2022
State Regulated: Yes
Regulatory Agency: NCDEQ, DEMLR, Dam Safety Program

Ownership

Benjamin J Treger

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Lewis Dam?

Lewis Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Lewis Dam?

Lewis Dam is owned by Benjamin J Treger (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Lewis Dam?

Lewis Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

When was Lewis Dam last inspected?

Lewis Dam was last inspected on November 17, 2022. 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.