Greenfield Dam is an earth dam located in Jefferson County, Iowa, built in 1998. It carries a Low hazard potential classification.
Dam profile
NID height · 35 ft35 ft tall and 435 ft long, taller than 80% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Greenfield Dam
The primary purpose of Greenfield Dam is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Douglas Greenfield (private). It impounds the Tr- South Walnut Creek near Rome.
The dam stands 35 feet tall and stretches 435 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 76 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1998, the structure is 28 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life.
At 35 feet, this dam is taller than 80% of dams nationwide.
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Location
| State | Iowa |
| County | Jefferson |
| Nearest City | Rome |
| River/Stream | Tr- South Walnut Creek |
| Coordinates | 41.08850, -91.95850 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 35 ft |
| Dam Length | 435 ft |
| Year Completed | 1998 (28 years old) |
Storage & Hydraulics
| NID Storage | 76 acre-ft |
| Max Storage | 76 acre-ft |
| Normal Storage | 48 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 160 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Douglas Greenfield |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA03694 |
| Federal ID | IA03694 |
| More Info | State Dam Safety Program |