Jefferson County Roadgrade Dam 7-72-8 Reservoir Report
Last Updated: December 13, 2025
Located in Jefferson County, Iowa, the Roadgrade Dam 7-72-8 is a local government-owned structure designed by the NRCS for fire protection, stock, or small fish pond purposes.
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Summary
Completed in 2007, this earth dam stands at a height of 26 feet and has a length of 535 feet, providing a storage capacity of 146 acre-feet. Situated on the TR- Rocky Branch stream, the dam serves the community of Rome and covers a surface area of 8.3 acres with a drainage area of 0.73 square miles.
With a low hazard potential and a moderate risk assessment rating, Jefferson County Roadgrade Dam 7-72-8 is state-regulated and subject to inspections, enforcement, and permitting by the Iowa DNR. The dam features an uncontrolled spillway with a width of 2 feet, ensuring proper water discharge during high flow events. While the condition assessment is currently not rated, the dam has not undergone any modifications since its completion, indicating a stable and well-maintained structure.
Water resource and climate enthusiasts will appreciate the strategic location and design of Jefferson County Roadgrade Dam 7-72-8, which plays a crucial role in providing fire protection and supporting local water resources. As part of the larger Rock Island District, this dam showcases the collaborative efforts between federal and state agencies to ensure the safety and functionality of dam infrastructure in the region. Moving forward, continued monitoring and maintenance of the dam will be essential to uphold its role in water management and environmental conservation efforts.
Year Completed |
2007 |
Dam Length |
535 |
Dam Height |
26 |
River Or Stream |
TR- ROCKY BRANCH |
Primary Dam Type |
Earth |
Surface Area |
8.3 |
Drainage Area |
0.73 |
Nid Storage |
146 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
26 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Cedar Creek Near Oakland Mills
|
10cfs |
Big Creek Near Mt. Pleasant
|
0cfs |
Des Moines River At Keosauqua
|
1800cfs |
North Skunk River Near Sigourney
|
97cfs |
English River At Kalona
|
41cfs |
Des Moines River At Ottumwa
|
1090cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Mac Coon Access
|
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Lake Darling State Park Campground
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Lake Darling State Park
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Round Prairie Park
|
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Brinton Timber
|
Jefferson County Roadgrade Dam 7-72-8