Jordahl Reservoir Report
Nearby: Huffman Brothers Meinhardt
Last Updated: December 5, 2025
Jordahl, located in Rockbridge, Wisconsin, is a privately owned earth dam completed in 1973 for fire protection, stock, or small fish pond purposes.
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Summary
The dam stands at a height of 30 feet with a hydraulic height of 26 feet and a length of 240 feet. With a drainage area of 0.1 square miles and a normal storage capacity of 11 acre-feet, Jordahl serves as a vital water resource for the surrounding area.
This dam on an unnamed tributary to the Pine River has a high hazard potential and a fair condition assessment as of May 2020. Despite its age, Jordahl continues to play a crucial role in water management and disaster prevention, with a maximum discharge capacity of 85 cubic feet per second. The dam's controlled spillway and updated inspections ensure its safety and functionality for the community it serves.
With its location in a high-risk area and a very high risk assessment rating, Jordahl is closely monitored by the Wisconsin Department of Natural Resources. The dam's emergency action plan, if prepared, could provide essential guidelines for responding to potential incidents. As climate change increases the frequency and intensity of extreme weather events, the maintenance and proper management of dams like Jordahl are essential for safeguarding communities and water resources in Wisconsin.
Year Completed |
1973 |
Dam Length |
240 |
Dam Height |
30 |
River Or Stream |
U/N Tributary to Pine River |
Primary Dam Type |
Earth |
Surface Area |
2 |
Hydraulic Height |
26 |
Drainage Area |
0.1 |
Nid Storage |
19 |
Structural Height |
30 |
Hazard Potential |
High |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Kickapoo River At La Farge
|
219cfs |
Wisconsin River At Muscoda
|
4800cfs |
Kickapoo River At State Highway 33 At Ontario
|
149cfs |
Lemonweir River At New Lisbon
|
261cfs |
Kickapoo River At Steuben
|
392cfs |
Wisconsin River Near Wisconsin Dells
|
3240cfs |
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.
Jordahl