Good Dam Reservoir Report
Last Updated: December 13, 2025
Good Dam, located in Fremont, Iowa, is a private earth dam designed by the USDA NRCS in 1960 for fire protection, stock, and small fish pond purposes.
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Summary
With a height of 46 feet and a length of 197 feet, the dam has a storage capacity of 56 acre-feet and covers a surface area of 3 acres. It is regulated by the Iowa DNR and is inspected, permitted, and enforced by the state, ensuring its safety and compliance with regulations.
The dam, situated on TR-Knox Creek, has a low hazard potential and a moderate risk assessment rating. While it currently holds a "Not Rated" condition assessment, the dam remains operational and meets the guidelines set by the state for emergency action plans. Despite being uncontrolled, the spillway type of the dam ensures proper water discharge, minimizing any potential risks associated with flooding or overflow. Overall, Good Dam serves as a vital resource for water management and conservation in the region, highlighting the importance of sustainable infrastructure for climate resilience.
Managed by a private owner, Good Dam plays a crucial role in water resource management in the area and serves as a key component of the local ecosystem. With its historical significance and continued regulatory oversight, the dam stands as a testament to responsible water infrastructure development. As climate enthusiasts and water resource advocates, it is essential to recognize the importance of structures like Good Dam in maintaining a balance between human needs and environmental sustainability in the face of changing climate patterns.
Year Completed |
1960 |
Dam Length |
197 |
Dam Height |
46 |
River Or Stream |
TR-KNOX CREEK |
Primary Dam Type |
Earth |
Surface Area |
3 |
Drainage Area |
0.53 |
Nid Storage |
56 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
46 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Nishnabotna River Above Hamburg
|
605cfs |
Missouri River At Nebraska City
|
25100cfs |
Weeping Water Creek At Union
|
20cfs |
West Nishnabotna River At Randolph
|
420cfs |
Little Nemaha River At Auburn
|
82cfs |
Tarkio River At Fairfax Mo
|
55cfs |
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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Waubonsie State Park
|
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Waubonsie State Park Campground
|
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Victorian Acres Campground
|
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Riverview Marina State Rec Area
|
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Camp Woodmen
|
Good Dam