Lone Elk Lower Dam

TR TO MERAMEC RIVER· St. Louis, Missouri· Built 1966· Earth· 45 ft tall
Low Hazard Recreation Fire Protection Stock Or Small Fish Pond Local Government

Key Takeaway

Lone Elk Lower Dam is classified as low hazard in Missouri. It was completed in 1966 and is 60 years old. Its primary use is recreation.

Physical Details

Dam Height 45 ft (taller than 92.6% in MO)
Dam Length600 ft
Dam TypeEarth
Max Storage331 acre-ft
Normal Storage331 acre-ft
Surface Area39 acres
Drainage Area1 sq mi
Max Discharge0 cfs
Year Completed1966 (60 years old)
NID IDMO30850

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: January 18, 2023
State Regulated: Yes
Regulatory Agency: Dam and Reservoir Safety Program

Ownership

ST LOUIS COUNTY

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Lone Elk Lower Dam?

Lone Elk Lower 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 Lone Elk Lower Dam?

Lone Elk Lower Dam is owned by ST LOUIS COUNTY (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Lone Elk Lower Dam built?

Lone Elk Lower Dam was completed in 1966, making it 60 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 Lone Elk Lower Dam?

Lone Elk Lower Dam serves the following purposes: Recreation, 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 Lone Elk Lower Dam?

Lone Elk Lower Dam has a dam height of 45 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 Lone Elk Lower Dam last inspected?

Lone Elk Lower Dam was last inspected on January 18, 2023. 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.