B O'Leary #2 Reservoir Report
Nearby: S&S Kurth #1 Halverson #1
Last Updated: December 5, 2025
B O'Leary #2 is a privately owned dam located in Yellowstone County, Montana, near the city of Billings.
°F
°F
mph
Wind
%
Humidity
Summary
Constructed in 1950, this earth dam stands at a height of 17 feet and has a storage capacity of 62 acre-feet, primarily used for fire protection, stock, and small fish pond purposes. Situated on TR-Bitter Creek, this structure is regulated by the Montana Department of Natural Resources and Conservation (DNRC) and is subject to state permitting, inspection, and enforcement.
With a low hazard potential and a current condition assessment of "Not Rated," B O'Leary #2 plays a crucial role in providing essential water resources for the surrounding area. Despite not being owned or funded by any federal agency, this dam serves as a vital component of the local water infrastructure. As a water resource and climate enthusiast, understanding the details of this structure, such as its location, purpose, and regulatory oversight, can offer valuable insights into the management and sustainability of water resources in Montana.
As an enthusiast in water resource and climate issues, exploring the intricacies of B O'Leary #2 sheds light on the importance of private dams in maintaining water security and supporting various uses in rural communities. From its construction history to its storage capacity and regulatory framework, this dam exemplifies the complex interplay between human-made structures and natural water systems. By delving into the specifics of B O'Leary #2, one can gain a deeper appreciation for the role of dams in water management and the challenges of balancing environmental conservation with human needs in a changing climate.
Year Completed |
1950 |
Dam Length |
200 |
Dam Height |
17 |
River Or Stream |
TR-BITTER CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
17 |
Nid Storage |
62 |
Hazard Potential |
Low |
Nid Height |
17 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Yellowstone River At Billings Mt
|
2820cfs |
Pryor Creek Nr Huntley Mt
|
21cfs |
Clarks Fork Yellowstone River At Edgar Mt
|
458cfs |
Bighorn River Near St. Xavier
|
1940cfs |
Little Bighorn River Near Hardin Mt
|
200cfs |
Willow Creek Near Boyd Mt
|
20cfs |
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.
B O'Leary #2
Coulson Public Park
Swords Park Propertyline
Daylis Stadium
Gorham Park
Burlington Park