Mcknight #2 Reservoir Report
Nearby: Mcknight #1 Dye #2
Last Updated: December 5, 2025
Mcknight #2 is a privately owned irrigation dam located in Carter, Montana, along the TR-HAY CREEK.
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Summary
Designed by USDA NRCS and completed in 1953, this earth dam stands at 25 feet tall and has a length of 300 feet, providing a storage capacity of 43 acre-feet. Despite being regulated by the state and inspected regularly by DNRC, the dam is categorized as having a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment.
The dam serves the primary purpose of irrigation and is situated in a remote area, 29 miles away from the city of CAPITOL NO. With a drainage area of 0.39 square miles and a maximum discharge capacity of 1000 cubic feet per second, Mcknight #2 plays a crucial role in water resource management in the region. Although it does not have associated structures or a spillway type specified, the dam is equipped with a spillway width of 100 feet to manage excess water.
While the dam may not have a detailed emergency action plan or risk assessment in place, its strategic location and functionality make it an essential asset for agricultural operations in the area. As climate change continues to impact water resources, understanding and maintaining infrastructure like Mcknight #2 will be vital for ensuring sustainable water management practices in Montana.
Year Completed |
1953 |
Dam Length |
300 |
Dam Height |
25 |
River Or Stream |
TR-HAY CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
25 |
Drainage Area |
0.39 |
Nid Storage |
43 |
Hazard Potential |
Low |
Nid Height |
25 |
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.
Mcknight #2