Rolling Hills Dam #1 Reservoir Report
Nearby: Rolling Hills Dam #2 Stoeffer Dam
Last Updated: December 12, 2025
Rolling Hills Dam #1, located in Maxwell, Iowa, is a privately owned earth dam designed by the USDA NRCS for fire protection, stock, and small fish pond purposes.
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Summary
Completed in 1973, this dam stands at a height of 37 feet and spans a length of 403 feet, with a storage capacity of 83 acre-feet. The dam is situated on TR-ROCK CREEK in Story County, Iowa, and is regulated by the Iowa Department of Natural Resources.
With a low hazard potential and a moderate risk assessment rating, Rolling Hills Dam #1 has not been rated for its condition but is regularly inspected by state authorities. The dam's uncontrolled spillway has a width of 3 feet, and it is equipped to handle emergency situations should they arise. While it primarily serves fire protection and stock purposes, the dam also offers recreational opportunities for the local community. Overall, Rolling Hills Dam #1 plays a crucial role in water resource management and climate resilience efforts in the area.
Year Completed |
1973 |
Dam Length |
403 |
Dam Height |
37 |
River Or Stream |
TR-ROCK CREEK |
Primary Dam Type |
Earth |
Surface Area |
5.3 |
Drainage Area |
0.13 |
Nid Storage |
83 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
37 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Indian Creek Near Mingo
|
79cfs |
South Skunk River Below Squaw Creek Near Ames
|
130cfs |
Squaw Creek At Ames
|
53cfs |
South Skunk River Near Ames
|
92cfs |
Fourmile Creek Near Ankeny
|
9cfs |
South Skunk River At Colfax
|
211cfs |
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.
Rolling Hills Dam #1