Greenfield Dam, located in Jefferson County, Iowa, is a privately-owned structure designed by the NRCS and completed in 1998.
Wind
Humidity
With a primary purpose of serving as a fire protection, stock, or small fish pond, this earth dam stands at a height of 35 feet and spans a length of 435 feet. The dam has a storage capacity of 76 acre-feet and covers a surface area of 5.3 acres, with a drainage area of 0.09 square miles.
Situated on TR- South Walnut Creek, Greenfield Dam is regulated by the Iowa Department of Natural Resources and is subject to state jurisdiction, permitting, inspection, and enforcement. The dam has a low hazard potential and its condition assessment is currently not rated. Despite its moderate risk classification, the dam has not been evaluated for emergency action preparedness, and there are no documented risk management measures in place.
Greenfield Dam, a key structure in the water resource management of the region, serves multiple purposes while ensuring the safety and protection of the surrounding community. As a significant feature in the local landscape, its construction and maintenance are overseen by state regulatory agencies to mitigate potential risks and ensure the continued functionality of the dam for fire protection, stock maintenance, and small fish pond management.
Year Completed |
1998 |
Dam Length |
435 |
Dam Height |
35 |
River Or Stream |
TR- SOUTH WALNUT CREEK |
Primary Dam Type |
Earth |
Surface Area |
5.3 |
Drainage Area |
0.09 |
Nid Storage |
76 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
35 |
Cedar Creek Near Oakland Mills
|
10cfs |
North Skunk River Near Sigourney
|
97cfs |
Big Creek Near Mt. Pleasant
|
0cfs |
Des Moines River At Ottumwa
|
1090cfs |
Des Moines River At Keosauqua
|
1800cfs |
English River At Kalona
|
41cfs |
| Location | Reservations | Toilets |
|---|---|---|
Lake Darling State Park Campground
|
||
Lake Darling State Park
|
||
Brinton Timber
|
||
Skunk River Access
|
||
Mac Coon Access
|