Irons Pool Reservoir Report
Nearby: Harmon Wetland Huer F Pond
Last Updated: December 5, 2025
Irons Pool is a private fish and wildlife pond located in Pine, Minnesota, near Taylor Falls.
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Summary
Built in 1966 by the USDA NRCS, this Earth dam structure stands at 9 feet high and spans 200 feet in length. The reservoir has a storage capacity of 120 acre-feet with a normal storage level of 47 acre-feet, covering a surface area of 29 acres and draining an area of 0.89 square miles.
The dam on Irons Pool is designed with a spillway type classified as "Uncontrolled," with a spillway width of 90 feet and a maximum discharge of 393 cubic feet per second. Despite being categorized as having a low hazard potential, the risk assessment for this structure indicates a moderate level of risk. With no official condition assessment rating available, the dam's overall condition is labeled as "Not Rated." Although it is not regulated by the state, the pond serves as a valuable habitat for local wildlife and contributes to the conservation efforts in the area.
Enthusiasts of water resources and climate will find Irons Pool to be an intriguing example of a privately owned reservoir designed for fish and wildlife purposes in Minnesota. With its tranquil setting along Zimbrick Brook and its contribution to the local ecosystem, this Earth dam structure represents a harmonious balance between human intervention and environmental conservation. While the risk level associated with the dam is moderate, the low hazard potential and the lack of state regulation suggest a relatively stable and safe environment for both the wildlife and the surrounding community.
Year Completed |
1966 |
Dam Length |
200 |
Dam Height |
9 |
River Or Stream |
ZIMBRICK BROOK |
Primary Dam Type |
Earth |
Surface Area |
29 |
Hydraulic Height |
9 |
Drainage Area |
0.89 |
Nid Storage |
120 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
9 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Kettle River Below Sandstone
|
170cfs |
St. Croix River Near Danbury
|
1650cfs |
Snake River Near Pine City
|
127cfs |
St. Louis River At Scanlon
|
517cfs |
St. Croix River At St. Croix Falls
|
1470cfs |
Nemadji River Near South Superior
|
93cfs |
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 |
|---|---|---|
St. Johns Landing
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St Croix State Park
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Logging Trail
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Paint Rock Spring
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Riverview - St. Croix State Park
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Paint Rock Springs - St. Croix State Park
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Irons Pool
The Site Of Old Sandstone Hydroelectric Dam To The Confluence With St. Croix River