Greenfield Dam
Key Takeaway
Greenfield Dam is classified as low hazard in Iowa. It was completed in 1998 and is 28 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 35 ft (taller than 70.9% in IA) |
| Dam Length | 435 ft |
| Dam Type | Earth |
| Max Storage | 76 acre-ft |
| Normal Storage | 48 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 160 cfs |
| Year Completed | 1998 (28 years old) |
| NID ID | IA03694 |
Safety Information
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?
Ownership
Douglas Greenfield
Private
Nearby Dams
Jefferson County Roadgrade Dam 25-73-10
Jefferson, IA
Low Hazard 28 ftPacha Dam
Jefferson, IA
Low Hazard 32 ftDimick Dam
Jefferson, IA
Low Hazard 29 ftWalnut Creek Dam Site 2
Jefferson, IA
Low Hazard 25 ftWalnut Creek Dam Site 1
Jefferson, IA
Low Hazard 27 ftHorras Dam
Jefferson, IA
Low Hazard 24 ftMc Creedy Dam
Jefferson, IA
Low Hazard 31 ftSeven Thousand Development Dam
Jefferson, IA
Low Hazard 24 ftFrequently Asked Questions
What is the hazard classification of Greenfield Dam?
Greenfield 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 Greenfield Dam?
Greenfield Dam is owned by Douglas Greenfield (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Greenfield Dam built?
Greenfield Dam was completed in 1998, making it 28 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 Greenfield Dam?
Greenfield Dam serves the following purposes: Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Greenfield Dam?
Greenfield Dam has a dam height of 35 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.