Kolling Dam; Mike 2 Reservoir Report
Nearby: Steiner Dam Friedt Dam; Wm & Luella
Last Updated: December 7, 2025
Kolling Dam; Mike 2 is a private earth dam located in Hettinger, North Dakota, with a primary purpose of fire protection, stock, or small fish pond.
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Summary
Constructed in 2007 by the USFWS, this dam has a height of 19 feet and a storage capacity of 99.9 acre-feet. It is regulated by the North Dakota State Water Commission and is inspected, permitted, and enforced by state agencies, ensuring its safety and compliance with regulations.
Situated on the Heart River in the St. Paul District, Kolling Dam; Mike 2 has a low hazard potential and a moderate risk assessment rating. The spillway type is uncontrolled, with a width of 40 feet, and the dam covers a surface area of 13.7 acres. Despite its relatively small size, this dam plays a crucial role in providing fire protection and supporting local wildlife through its stock and small fish pond functions.
With its strategic location and contribution to water resource management in the region, Kolling Dam; Mike 2 stands as a testament to the importance of private infrastructure in safeguarding against emergencies and supporting ecosystem health. Its design and construction by the USFWS reflect a commitment to stewardship and responsible water management practices, making it a noteworthy site for water resource and climate enthusiasts to study and appreciate.
Year Completed |
2007 |
Dam Height |
19 |
River Or Stream |
HEART RIVER-TR |
Primary Dam Type |
Earth |
Surface Area |
13.7 |
Nid Storage |
99.9 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
19 |
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.
Kolling Dam; Mike 2