Glenwood Lake Dam

RILEY CREEK· Coles, Illinois· Built 1970· Earth· 28 ft tall
Low Hazard Recreation Private

Key Takeaway

Glenwood Lake Dam is classified as low hazard in Illinois. It was completed in 1970 and is 56 years old. Its primary use is recreation.

Physical Details

Dam Height 28 ft (taller than 54.6% in IL)
Dam Length300 ft
Dam TypeEarth
Max Storage86 acre-ft
Normal Storage52 acre-ft
Year Completed1970 (56 years old)
NID IDIL00717

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: June 26, 2020
State Regulated: Yes
Regulatory Agency: IDNR

Ownership

LAKE GLENWOOD HOMEOWNERS ASSOCIATION

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Glenwood Lake Dam?

Glenwood Lake 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 Glenwood Lake Dam?

Glenwood Lake Dam is owned by LAKE GLENWOOD HOMEOWNERS ASSOCIATION (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Glenwood Lake Dam built?

Glenwood Lake Dam was completed in 1970, making it 56 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 Glenwood Lake Dam?

Glenwood Lake 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 Glenwood Lake Dam?

Glenwood Lake Dam has a dam height of 28 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 Glenwood Lake Dam last inspected?

Glenwood Lake Dam was last inspected on June 26, 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.