Kobilansky Dam; Tony 2 Reservoir Report
Nearby: Freitag Dam; Francis Opp Dam; Kevin 1
Last Updated: December 8, 2025
Kobilansky Dam; Tony 2, located in North Dakota, was completed in 1995 by USFWS and serves multiple purposes including fire protection, stock, and small fish pond management.
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Summary
This privately owned earth dam stands at 9.4 feet high and stretches 727 feet in length, with a storage capacity of 108 acre-feet. The dam, situated on Heart Butte Creek-TR, features an uncontrolled spillway with a width of 300 feet and a low hazard potential.
Despite being classified as low risk, Kobilansky Dam is regulated, permitted, inspected, and enforced by the North Dakota State Water Commission. The dam's condition assessment is currently not rated, and it has not undergone a recent inspection since July 2001. With a moderate risk level assigned, the dam does not have an emergency action plan in place and lacks inundation maps for potential risk management. Overall, Kobilansky Dam; Tony 2 stands as a vital structure for water resource management in the area, catering to both practical and ecological needs.
Year Completed |
1995 |
Dam Length |
727 |
Dam Height |
9.4 |
River Or Stream |
HEART BUTTE CREEK-TR |
Primary Dam Type |
Earth |
Surface Area |
15 |
Drainage Area |
0.86 |
Nid Storage |
108 |
Outlet Gates |
Vertical Lift - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
9 |
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.
Kobilansky Dam; Tony 2