Allram Dam; Evelyn Hansen 3 Reservoir Report
Nearby: Road Dam Craig Dam; Bob 7
Last Updated: December 5, 2025
Allram Dam, also known as Evelyn Hansen 3, is a private earth dam located on Lone Tree Creek in Bowman, North Dakota.
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Summary
Built in 1992 by the USFWS, this dam serves multiple purposes including fire protection, stock, and small fish pond management. With a height of 16.5 feet and a storage capacity of 75.4 acre-feet, it provides essential water resources for the surrounding area.
Managed by the NDSWC and regulated by the state, Allram Dam has a low hazard potential and a moderate risk assessment rating. The spillway, with a width of 150 feet, is uncontrolled, ensuring water flow in times of excess. Despite being in a moderate risk category, the dam has not been formally rated for its condition, and emergency action plans are not available at the moment.
For water resource and climate enthusiasts, Allram Dam offers a glimpse into the intricate network of dams that help manage and distribute water resources in North Dakota. Its strategic location on Lone Tree Creek and its multifunctional design make it a valuable asset for the community, ensuring water security for various purposes while also maintaining a low hazard potential.
Year Completed |
1992 |
Dam Height |
16.5 |
River Or Stream |
LONE TREE CREEK |
Primary Dam Type |
Earth |
Surface Area |
11.2 |
Drainage Area |
5.41 |
Nid Storage |
75.4 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
17 |
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.
Allram Dam; Evelyn Hansen 3