Lanny Jokers Dam

TRIB MACOUPIN CREEK· Macoupin, Illinois· Earth· 42 ft tall
Low Hazard Recreation Private

Key Takeaway

Lanny Jokers Dam is classified as low hazard in Illinois. Its primary use is recreation.

Physical Details

Dam Height 42 ft (taller than 85.8% in IL)
Dam Length372 ft
Dam TypeEarth
Max Storage470 acre-ft
Normal Storage362 acre-ft
Surface Area28 acres
Drainage Area0 sq mi
Max Discharge172 cfs
NID IDIL50511

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: September 30, 2020
State Regulated: Yes
Regulatory Agency: IDNR

Ownership

LANNY JOKERS

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Lanny Jokers Dam?

Lanny Jokers 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 Lanny Jokers Dam?

Lanny Jokers Dam is owned by LANNY JOKERS (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Lanny Jokers Dam?

Lanny Jokers 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 Lanny Jokers Dam?

Lanny Jokers Dam has a dam height of 42 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 Lanny Jokers Dam last inspected?

Lanny Jokers Dam was last inspected on September 30, 2020. 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.