Solberg Dam; Dorvan Reservoir Report
Last Updated: December 13, 2025
Solberg Dam, also known as Roseth Dam, is a private earth dam located in Williams County, North Dakota.
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Summary
Built in 1930 by designer Roger Smith, this dam serves as a Fish and Wildlife Pond with a storage capacity of 170.2 acre-feet. With a normal storage level of 47.6 acre-feet and a surface area of 16.6 acres, Solberg Dam plays a crucial role in supporting the local ecosystem and wildlife in the area.
Managed by the North Dakota State Water Commission, Solberg Dam has a low hazard potential and is currently rated as "Not Rated" in terms of its condition assessment. With a moderate risk level of 3, there is ongoing monitoring and risk management measures in place to ensure the safety and efficiency of the dam. Although the last inspection was conducted in 1999, the dam continues to be regulated, inspected, and permitted by the state authorities to maintain its integrity and functionality.
Located on Beaver Creek-TR, Solberg Dam is a significant structure in the region with a primary purpose of supporting fish and wildlife habitats. Despite its age, the dam has stood the test of time and remains an essential component of the local water resource management. As a point of interest for water resource and climate enthusiasts, Solberg Dam stands as a testament to the importance of sustainable water infrastructure for supporting ecological diversity and conservation efforts in North Dakota.
Year Completed |
1930 |
Dam Height |
10 |
River Or Stream |
BEAVER CREEK-TR |
Primary Dam Type |
Earth |
Surface Area |
16.6 |
Drainage Area |
7.57 |
Nid Storage |
170.2 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
10 |
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.
Solberg Dam; Dorvan