Cedar Glen Unit 2 Dam

SPRING BROOK· Will, Illinois· Built 1985· Other· 11 ft tall
Low Hazard Flood Risk Reduction Recreation Private

Key Takeaway

Cedar Glen Unit 2 Dam is classified as low hazard in Illinois. It was completed in 1985 and is 41 years old. Its primary use is flood risk reduction.

Physical Details

Dam Height 11 ft (taller than 8.1% in IL)
Dam Length460 ft
Dam TypeOther
Max Storage75 acre-ft
Normal Storage0 acre-ft
Max Discharge965 cfs
Year Completed1985 (41 years old)
NID IDIL50058

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: Yes
Last Inspection: June 6, 2019
State Regulated: Yes
Regulatory Agency: IDNR

Ownership

CITY OF NAPERVILLE

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Cedar Glen Unit 2 Dam?

Cedar Glen Unit 2 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 Cedar Glen Unit 2 Dam?

Cedar Glen Unit 2 Dam is owned by CITY OF NAPERVILLE (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Cedar Glen Unit 2 Dam built?

Cedar Glen Unit 2 Dam was completed in 1985, making it 41 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 Cedar Glen Unit 2 Dam?

Cedar Glen Unit 2 Dam serves the following purposes: Flood Risk Reduction, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Cedar Glen Unit 2 Dam?

Cedar Glen Unit 2 Dam has a dam height of 11 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 Cedar Glen Unit 2 Dam last inspected?

Cedar Glen Unit 2 Dam was last inspected on June 6, 2019. 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.