Troublesome Cr Watershed Site 80-1 Reservoir Report

Last Updated: December 14, 2025

Troublesome Cr Watershed Site 80-1, located in Audubon County, Iowa, is a vital resource managed by the local government for fire protection, stock, and small fish pond purposes.


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Summary

This earth dam, completed in 1978 by USDA NRCS, stands at a height of 28 feet and spans a length of 2570 feet, providing a storage capacity of 127 acre-feet. The dam plays a crucial role in flood risk reduction along the TR-East Nishnabotna River.

Despite its low hazard potential, Troublesome Cr Watershed Site 80-1 is subject to state regulations and inspections by the Iowa DNR to ensure its structural integrity and functionality. The dam's condition assessment is currently not rated, but its risk assessment indicates a moderate level of risk. While the dam has not been modified in recent years, it remains a key component of the water management infrastructure in the area, highlighting the importance of ongoing monitoring and maintenance to mitigate potential risks and ensure its continued effectiveness in protecting the surrounding community and environment.

Year Completed

1978

Dam Length

2570

Dam Height

28

River Or Stream

TR-EAST NISHNABOTNA RIVER

Primary Dam Type

Earth

Surface Area

5.5

Drainage Area

0.79

Nid Storage

127

Hazard Potential

Low

Foundations

Soil

Nid Height

28
       
Seasonal Comparison

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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.