Riverstone Group Dam

TRIB ROCK RIVER· Henry, Illinois· Earth·
High Hazard Other Private

Key Takeaway

Riverstone Group Dam is classified as high hazard in Illinois. Its primary use is other. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.

Physical Details

Dam TypeEarth
Max Storage74 acre-ft
Normal Storage0 acre-ft
Surface Area5 acres
NID IDIL40158

Safety Information

High Hazard

Loss of human life is likely if the dam fails.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: No
Last Inspection: June 13, 2023
State Regulated: Yes
Regulatory Agency: IDNR

Ownership

RIVERSTONE GROUP, INC.

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Riverstone Group Dam?

Riverstone Group Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Riverstone Group Dam?

Riverstone Group Dam is owned by RIVERSTONE GROUP, INC. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Riverstone Group Dam?

Riverstone Group Dam serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

When was Riverstone Group Dam last inspected?

Riverstone Group Dam was last inspected on June 13, 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.