Courtoise Lane Dam

TRIB GIRDER BRANCH· Macoupin, Illinois· Earth· 34 ft tall
Low Hazard Recreation Private

Key Takeaway

Courtoise Lane Dam is classified as low hazard in Illinois. Its primary use is recreation.

Physical Details

Dam Height 34 ft (taller than 73.9% in IL)
Dam Length300 ft
Dam TypeEarth
Max Storage121 acre-ft
Normal Storage66 acre-ft
Surface Area7 acres
Drainage Area0 sq mi
Max Discharge25 cfs
NID IDIL50591

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: October 14, 2022
State Regulated: Yes
Regulatory Agency: IDNR

Ownership

DON & MARY ANN RAYMOND

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Courtoise Lane Dam?

Courtoise Lane 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 Courtoise Lane Dam?

Courtoise Lane Dam is owned by DON & MARY ANN RAYMOND (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Courtoise Lane Dam?

Courtoise Lane 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 Courtoise Lane Dam?

Courtoise Lane Dam has a dam height of 34 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 Courtoise Lane Dam last inspected?

Courtoise Lane Dam was last inspected on October 14, 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.