Conley Dam Reservoir Report
Nearby: Lundquist Dam Smith Dam
Last Updated: December 15, 2025
Conley Dam, located in Cherokee, Iowa, serves multiple purposes including fire protection, stock, and a small fish pond.
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Summary
Completed in 1997, this private dam is primarily made of earth and stands at a height of 40 feet with a length of 290 feet. With a storage capacity of 21 acre-feet, Conley Dam plays a crucial role in water resource management for the area. It is situated on the TR- Little Sioux River and is owned by a private entity.
Despite being classified as having a low hazard potential, Conley Dam is considered to have a moderate risk level. The dam does not have an official condition assessment rating but is currently rated as "Not Rated". Emergency preparedness measures such as an Emergency Action Plan (EAP) and risk management strategies are not documented for this structure. The dam's spillway is uncontrolled, and it has no outlet gates or associated locks, highlighting its simplistic design compared to other dams in the region.
Ensuring the safety and longevity of Conley Dam is essential for water resource and climate enthusiasts. With its strategic location and purpose, this dam plays a vital role in the local ecosystem. Ongoing monitoring, maintenance, and potential risk mitigation efforts will be key in preserving the integrity of Conley Dam and its surrounding environment for years to come.
Year Completed |
1997 |
Dam Length |
290 |
Dam Height |
40 |
River Or Stream |
TR- LITTLE SIOX RIVER |
Primary Dam Type |
Earth |
Surface Area |
1 |
Drainage Area |
0.15 |
Nid Storage |
21 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
40 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Little Sioux River At Linn Grove
|
257cfs |
Little Sioux River At Correctionville
|
327cfs |
Floyd River At Alton
|
36cfs |
Ocheyedan River Near Spencer
|
59cfs |
North Raccoon River Near Sac City
|
312cfs |
Floyd River At James
|
187cfs |
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.
Conley Dam