Rock River Water Reclamation District Excess Flow Basin Dam

ROCK RIVER - OFFSTREAM· Winnebago, Illinois· Built 2016· Earth· 8 ft tall
High Hazard Other Public Utility

Key Takeaway

Rock River Water Reclamation District Excess Flow Basin Dam is classified as high hazard in Illinois. It was completed in 2016 and is 10 years old. 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 Height 8 ft (taller than 2.5% in IL)
Dam Length2,600 ft
Dam TypeEarth
Max Storage42 acre-ft
Normal Storage0 acre-ft
Year Completed2016 (10 years old)
NID IDIL50668

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: Yes
Last Inspection: June 29, 2023
State Regulated: Yes
Regulatory Agency: IDNR

Ownership

ROCK RIVER WATER RECLAMATION DISTRICT

Public Utility

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Rock River Water Reclamation District Excess Flow Basin Dam?

Rock River Water Reclamation District Excess Flow Basin 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 Rock River Water Reclamation District Excess Flow Basin Dam?

Rock River Water Reclamation District Excess Flow Basin Dam is owned by ROCK RIVER WATER RECLAMATION DISTRICT (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Rock River Water Reclamation District Excess Flow Basin Dam built?

Rock River Water Reclamation District Excess Flow Basin Dam was completed in 2016, making it 10 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 Rock River Water Reclamation District Excess Flow Basin Dam?

Rock River Water Reclamation District Excess Flow Basin Dam serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Rock River Water Reclamation District Excess Flow Basin Dam?

Rock River Water Reclamation District Excess Flow Basin Dam has a dam height of 8 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 Rock River Water Reclamation District Excess Flow Basin Dam last inspected?

Rock River Water Reclamation District Excess Flow Basin Dam was last inspected on June 29, 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.