Scott Blvd Dam

S. BR. RALSTON CREEK· Johnson, Iowa· Built 1980· Earth· 20 ft tall
High Hazard Flood Risk Reduction Local Government

Key Takeaway

Scott Blvd Dam is classified as high hazard in Iowa. It was completed in 1980 and is 46 years old. Its primary use is flood risk reduction. 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 20 ft (taller than 7.5% in IA)
Dam Length805 ft
Dam TypeEarth
Max Storage313 acre-ft
Normal Storage0 acre-ft
Surface Area0 acres
Drainage Area1 sq mi
Max Discharge0 cfs
Year Completed1980 (46 years old)
NID IDIA02117

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 30, 2020
State Regulated: Yes
Regulatory Agency: IOWA DNR

Ownership

City of Iowa City

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Scott Blvd Dam?

Scott Blvd 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 Scott Blvd Dam?

Scott Blvd Dam is owned by City of Iowa City (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Scott Blvd Dam built?

Scott Blvd Dam was completed in 1980, making it 46 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 Scott Blvd Dam?

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

How tall is Scott Blvd Dam?

Scott Blvd Dam has a dam height of 20 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 Scott Blvd Dam last inspected?

Scott Blvd Dam was last inspected on June 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.