Leekly Dam Reservoir Report
Last Updated: December 16, 2025
Located in Sioux City, Iowa, the Leekly Dam is a private earth dam designed by the USDA NRCS in 1968 for fire protection, stock, and small fish pond purposes.
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Summary
The dam stands at a height of 52 feet and spans 884 feet, with a storage capacity of 274 acre-feet and a surface area of 9.1 acres. It is regulated by the Iowa DNR and is part of the Broken Kettle Creek watershed.
Despite being categorized as having a low hazard potential, the Leekly Dam's risk assessment indicates a moderate level of risk. However, the dam's condition is currently not rated, and there is no information available on the last inspection date or inspection frequency. The dam does not have an Emergency Action Plan prepared, and its Emergency Contacts, Inundation Maps, and Risk Management Measures are also not updated or available. As water resource and climate enthusiasts, it is crucial to monitor and assess the safety and maintenance of dams like Leekly to ensure their continued functionality and safety for the surrounding community and environment.
Year Completed |
1968 |
Dam Length |
884 |
Dam Height |
52 |
River Or Stream |
TR-BROKEN KETTLE CREEK |
Primary Dam Type |
Earth |
Surface Area |
9.1 |
Drainage Area |
1.37 |
Nid Storage |
274 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
52 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Perry Creek Near Milnerville
|
25cfs |
Floyd River At James
|
187cfs |
Big Sioux River At Akron
|
816cfs |
Missouri River At Sioux City
|
14400cfs |
Vermillion River Nr Vermillion Sd
|
33cfs |
Omaha Cr At Homer
|
45cfs |
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.
Leekly Dam