Tewaukon Ws-T-2 Reservoir Report
Last Updated: December 13, 2025
Tewaukon Ws-T-2, also known as Frenier, is a local government-owned earth dam located in Sargent County, North Dakota.
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Summary
Built in 1965 by the USDA NRCS, this dam serves the primary purpose of flood risk reduction along the Wild Rice River. Standing at 41 feet tall and stretching 2,185 feet in length, the dam has a normal storage capacity of 238.5 acre-feet and a maximum storage of 2,013.3 acre-feet.
Managed by the North Dakota State Water Commission, Tewaukon Ws-T-2 is regulated, permitted, inspected, and enforced by state agencies to ensure its safety and functionality. With a low hazard potential and a moderate risk assessment rating, this dam features an uncontrolled spillway with a width of 300 feet and a single valve outlet gate. Although its condition assessment is currently not rated, Tewaukon Ws-T-2 plays a crucial role in protecting the surrounding area from potential flood events.
Water resource and climate enthusiasts can appreciate the engineering and management efforts behind Tewaukon Ws-T-2, as it stands as a testament to effective flood risk reduction strategies in North Dakota. The dam's strategic location along the Wild Rice River, coupled with its low hazard potential and moderate risk assessment, highlights the importance of proactive measures in safeguarding communities from potential water-related disasters. With ongoing state oversight and enforcement, Tewaukon Ws-T-2 continues to serve its purpose in mitigating flood risks and ensuring the safety of the surrounding area.
Year Completed |
1965 |
Dam Length |
2185 |
Dam Height |
37 |
River Or Stream |
WILD RICE RIVER-TR |
Primary Dam Type |
Earth |
Surface Area |
30.1 |
Drainage Area |
9 |
Nid Storage |
2013.3 |
Structural Height |
41 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
41 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Wild Rice River Nr Rutland
|
21cfs |
Sheyenne River At Lisbon
|
222cfs |
Bear Creek Nr Oakes
|
5cfs |
James River At Nd-Sd State Line
|
194cfs |
Little Minnesota River Near Peever
|
27cfs |
Antelope Creek At Dwight
|
25cfs |
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.
Tewaukon Ws-T-2