Ahquabi Dredge Spoil Containment Dam 5a Reservoir Report
Last Updated: December 21, 2025
Ahquabi Dredge Spoil Containment Dam 5a, located in Indianola, Iowa, serves as a crucial structure for debris control on TR- SQUAW CREEK.
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Summary
Constructed in 1995 by BUTTS ENGINEERING, this earth dam stands at 19 feet high and spans 519 feet in length. With a storage capacity of 113 acre-feet, the dam primarily functions to prevent debris from causing blockages and flooding in the area. Despite being classified with a low hazard potential, the dam has not been formally rated for its condition.
Managed by the Iowa Department of Natural Resources (IOWA DNR), the dam is subject to state regulation, permitting, inspection, and enforcement to ensure its structural integrity and effectiveness in preventing debris-related issues. While it has a moderate risk assessment rating of 3, the dam has not had an Emergency Action Plan (EAP) prepared or updated recently, raising concerns about emergency response preparedness. Overall, Ahquabi Dredge Spoil Containment Dam 5a serves as a critical piece of infrastructure for water resource management in the region, warranting continued monitoring and maintenance to uphold its functionality and safety.
Year Completed |
1995 |
Dam Length |
519 |
Dam Height |
19 |
River Or Stream |
TR- SQUAW CREEK |
Primary Dam Type |
Earth |
Surface Area |
7.4 |
Drainage Area |
0.67 |
Nid Storage |
113 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
19 |
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.
Ahquabi Dredge Spoil Containment Dam 5a