Goos Dam Reservoir Report
Nearby: Rubenbauer Dam Stump Dam
Last Updated: December 6, 2025
Goos Dam, located in Tama County, Iowa, is a privately owned earth dam completed in 1987 with a primary purpose of fire protection, stock, or small fish pond.
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Summary
The dam stands at a height of 27 feet and has a length of 265 feet, providing a storage capacity of 40 acre-feet. Situated on the TR- Iowa River, the dam serves as a low hazard structure with a moderate risk assessment rating.
Managed by the Iowa Department of Natural Resources, Goos Dam is state regulated, permitted, inspected, and enforced to ensure its safety and compliance with regulations. The dam features an uncontrolled spillway and is surrounded by a surface area of 3 acres, serving a drainage area of 0.18 square miles. With its location in a rural setting, the dam contributes to water resource management for fire protection and livestock while also providing recreational opportunities for small-scale fishing.
Despite its low hazard potential, Goos Dam plays a crucial role in managing water resources in the area, providing valuable storage capacity and serving multiple purposes for the local community. Its presence on the TR- Iowa River underscores the importance of maintaining and regulating dams to ensure both safety and sustainability in the face of changing climate conditions.
Year Completed |
1987 |
Dam Length |
265 |
Dam Height |
27 |
River Or Stream |
TR- IOWA RIVER |
Primary Dam Type |
Earth |
Surface Area |
3 |
Drainage Area |
0.18 |
Nid Storage |
40 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
27 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Richland Creek Near Haven
|
12cfs |
Walnut Creek Near Hartwick
|
13cfs |
Salt Creek Near Elberon
|
42cfs |
Iowa River Near Belle Plaine
|
966cfs |
Timber Creek Near Marshalltown
|
37cfs |
Iowa River At Marshalltown
|
1040cfs |
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.
Goos Dam
ATV Trail Tama