Wanner Dam; Justine Reservoir Report
Nearby: Green River Dam Pelton Dam; Gene F 1
Last Updated: December 14, 2025
Wanner Dam; Justine is a privately owned earth dam located in Stark, North Dakota, along the Heart River-TR.
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Summary
Built in 1973 by USDA NRCS, this dam serves multiple purposes including fire protection, stock watering, and as a small fish pond. With a height of 26 feet and a length of 295 feet, the dam has a storage capacity of 50 acre-feet and covers a surface area of 5 acres.
The dam's spillway type is uncontrolled with a width of 28 feet, and it has a low hazard potential and a moderate risk assessment rating. Despite not being regulated by the state of North Dakota, the dam undergoes regular inspections and enforcement measures to ensure its safety and functionality. The dam's condition assessment is currently listed as "not rated," indicating a need for further evaluation.
Overall, Wanner Dam; Justine plays a crucial role in water resource management in the region, providing essential services to the local community while also contributing to the conservation of the surrounding environment. Its construction and maintenance exemplify the collaborative efforts between private owners and government agencies to ensure the safety and sustainability of water infrastructure in North Dakota.
Year Completed |
1973 |
Dam Length |
295 |
Dam Height |
26 |
River Or Stream |
HEART RIVER-TR |
Primary Dam Type |
Earth |
Surface Area |
5 |
Drainage Area |
0.23 |
Nid Storage |
50 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
26 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Wanner Dam; Justine