D Hannaland #1 Reservoir Report
Nearby: R C Mothershead #1 Mckerlic #1
Last Updated: December 5, 2025
D Hannaland #1 is a private dam located in McCone, Montana, with a primary purpose of providing fire protection, stock watering, and serving as a small fish pond.
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Summary
Completed in 1959, this earth dam stands at a height of 20 feet and has a storage capacity of 62 acre-feet. Situated on TR-Timber Creek, this structure is regulated by the Montana Department of Natural Resources and Conservation with state jurisdiction and permitting in place.
With a low hazard potential and a current condition assessment of "Not Rated," D Hannaland #1 remains an important resource for water management in the area. The dam has not been inspected in recent times, but state enforcement and inspection protocols are in place to ensure its safety and functionality. Although details on emergency action plans and risk management measures are not available, the dam continues to serve its intended purposes effectively.
Enthusiasts of water resources and climate will find D Hannaland #1 to be an intriguing structure with its historical significance and multi-functional use. As a private dam in a rural setting, it plays a crucial role in providing essential services while adhering to state regulations and oversight. Further exploration of its management practices and future maintenance plans could provide valuable insights into sustainable water resource management in the region.
Year Completed |
1959 |
Dam Length |
400 |
Dam Height |
20 |
River Or Stream |
TR-TIMBER CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
62 |
Hazard Potential |
Low |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Nelson Creek Near Van Norman Mt
|
33cfs |
Redwater River At Circle Mt
|
4cfs |
Milk River At Nashua Mt
|
233cfs |
Missouri River Near Wolf Point Mt
|
5020cfs |
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.
D Hannaland #1