Waubonsie Cr. Watershed Site 39-1 Reservoir Report

Last Updated: December 5, 2025

Waubonsie Cr.


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Summary

Watershed Site 39-1 in Mills County, Iowa is a local government-owned earth dam designed by USDA NRCS for fire protection, stock, or small fish pond purposes. Completed in 1983, this dam stands at a height of 37 feet and spans 640 feet, with a storage capacity of 103 acre-feet and a drainage area of 0.41 square miles. The dam's primary purpose also includes flood risk reduction, making it a vital resource for the surrounding community.

Located in Bartlett, Iowa, this dam on the Waubonsie Creek is regulated by the Iowa DNR and is subject to state permitting, inspection, and enforcement. With a low hazard potential and a moderate risk assessment rating, the site is deemed essential for water resource management and climate resilience efforts in the area. Even though its condition assessment is currently not rated, the dam plays a crucial role in protecting the local ecosystem and ensuring water security for the region.

Managed by the Natural Resources Conservation Service, Waubonsie Cr. Watershed Site 39-1 serves as a key infrastructure for maintaining water quality, mitigating flood risks, and supporting wildlife habitats. With its strategic location and design, this earth dam contributes to the overall environmental sustainability and resilience of the surrounding landscape, making it a valuable asset for water resource and climate enthusiasts to appreciate and support.

Year Completed

1983

Dam Length

640

Dam Height

37

River Or Stream

TR-WAUBONSIE CR.

Primary Dam Type

Earth

Surface Area

5.9

Drainage Area

0.41

Nid Storage

103

Hazard Potential

Low

Foundations

Soil

Nid Height

37
       
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.