Easter Lake Stormwater Retention Basin - Site 9
Key Takeaway
Easter Lake Stormwater Retention Basin - Site 9 is classified as high hazard in Iowa. It was completed in 2005 and is 21 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 | 24 ft (taller than 15.8% in IA) |
| Dam Length | 475 ft |
| Dam Type | Earth |
| Max Storage | 168 acre-ft |
| Normal Storage | 23 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 2005 (21 years old) |
| NID ID | IA03519 |
Safety Information
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?
Ownership
City of Des Moines
Local Government
Nearby Dams
Se Des Moines Stormwater Det. Dam #8
Polk, IA
Low Hazard 23 ftSe Des Moines Stormwater Det. Dam #5
Polk, IA
Low Hazard 19 ftSe Des Moines Stormwater Det. Dam #4
Polk, IA
Significant Hazard 26 ftSe Des Moines Stormwater Det. Dam #3
Polk, IA
Significant Hazard 34 ftEaster Lake Retention Basin # 10
Polk, IA
Significant Hazard 22 ftEaster Lake Dam
Polk, IA
Significant Hazard 43 ftEaster Lake Retention Basin #1
Polk, IA
Significant Hazard 18 ftSpence Dam
Warren, IA
Low Hazard 32 ftFrequently Asked Questions
What is the hazard classification of Easter Lake Stormwater Retention Basin - Site 9?
Easter Lake Stormwater Retention Basin - Site 9 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 Easter Lake Stormwater Retention Basin - Site 9?
Easter Lake Stormwater Retention Basin - Site 9 is owned by City of Des Moines (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Easter Lake Stormwater Retention Basin - Site 9 built?
Easter Lake Stormwater Retention Basin - Site 9 was completed in 2005, making it 21 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 Easter Lake Stormwater Retention Basin - Site 9?
Easter Lake Stormwater Retention Basin - Site 9 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 Easter Lake Stormwater Retention Basin - Site 9?
Easter Lake Stormwater Retention Basin - Site 9 has a dam height of 24 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 Easter Lake Stormwater Retention Basin - Site 9 last inspected?
Easter Lake Stormwater Retention Basin - Site 9 was last inspected on May 29, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.