Iowa Noname11 Reservoir Report
Last Updated: December 11, 2025
Iowa Noname11 is a state-regulated earth dam located in Decatur County, Iowa, serving multiple purposes including fire protection, stock, small fish pond, and recreation.
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Summary
Built in 1969, the dam stands at a height of 44 feet and has a length of 840 feet, with a storage capacity of 276 acre-feet. Situated on the TR-Dickerson Branch river, the dam's hazard potential is rated as low, with a moderate risk assessment score of 3.
Owned and regulated by the Iowa Department of Natural Resources, Iowa Noname11 is inspected, permitted, and enforced by state agencies, ensuring safety and compliance with regulations. Although the dam's condition assessment is not rated, its risk management measures are currently unspecified. The dam's location in Cainsville, MO, and its proximity to Rock Island District adds to its significance and interest for water resource and climate enthusiasts in the region.
Overall, Iowa Noname11 presents an intriguing case study for water resource and climate enthusiasts, showcasing the intersection of dam infrastructure, environmental management, and regulatory oversight. With its diverse purposes, low hazard potential, and moderate risk assessment, this earth dam in Decatur County, Iowa, offers a glimpse into the complexities of managing water resources for various needs while ensuring safety and compliance with state regulations.
Year Completed |
1969 |
Dam Length |
840 |
Dam Height |
44 |
River Or Stream |
TR-DICKERSON BRANCH |
Primary Dam Type |
Earth |
Surface Area |
15 |
Drainage Area |
0.43 |
Nid Storage |
276 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
44 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Iowa Noname11