Collins Dam Reservoir Report

Last Updated: December 6, 2025

Collins Dam, located in Davis County, Iowa, was completed in 1997 by the USDA NRCS and serves multiple purposes, including fire protection and creating a small fish pond.


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Summary

This private earth dam stands at a height of 31 feet and stretches 175 feet in length, with a storage capacity of 23 acre-feet. Situated on the TR-Soap Creek, this structure is designed to withstand low hazard potential and has not been rated for its condition assessment.

Despite its small size, Collins Dam plays a crucial role in water resource management in the area, providing essential benefits for local wildlife and fire protection. The dam's low hazard potential and moderate risk assessment highlight its importance in balancing environmental and safety considerations. Managed by private owners, the dam stands as a testament to the collaborative efforts of various agencies in ensuring the sustainability of water resources in Iowa.

As a part of the Rock Island District, Collins Dam showcases the commitment of the Natural Resources Conservation Service to sustainable water management practices. Its strategic location and multi-purpose design contribute to the overall resilience of the local ecosystem and provide valuable insights for climate enthusiasts and water resource professionals. By understanding and supporting structures like Collins Dam, we can work towards a more sustainable future for our water resources and climate resilience efforts.

Year Completed

1997

Dam Length

175

Dam Height

31

River Or Stream

TR- SOAP CREEK

Primary Dam Type

Earth

Surface Area

2

Drainage Area

0.05

Nid Storage

23

Hazard Potential

Low

Foundations

Soil

Nid Height

31
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.