Tewaukon Ws-T-1-A Reservoir Report
Last Updated: December 14, 2025
Tewaukon Ws-T-1-A, also known as Brummard-Lubke, is a significant earth dam located in Sargent County, North Dakota, along the Wild Rice River.
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Summary
Built in 1963 by the USDA NRCS, this dam serves a primary purpose of flood risk reduction and is regulated by the North Dakota State Water Commission. With a height of 40.3 feet and a length of 3370 feet, the dam has a storage capacity of 2638.8 acre-feet and covers a surface area of 31.5 acres.
The dam features an uncontrolled spillway with a width of 400 feet and one other controlled outlet gate. While its hazard potential is considered significant and its condition assessment is not rated, the risk assessment is moderate. The dam has not been modified in recent years and does not fall under the jurisdiction of the US Army Corps of Engineers. Despite lacking a formal Emergency Action Plan (EAP) and updated emergency contacts, the dam is inspected by the state regulatory agency with enforcement and permitting responsibilities.
For water resource and climate enthusiasts, Tewaukon Ws-T-1-A presents an intriguing case study in dam infrastructure management. Its role in flood risk reduction along the Wild Rice River, coupled with its regulatory oversight by the NDSWC, highlights the importance of maintaining and assessing the condition of critical water infrastructure. As discussions surrounding climate change and extreme weather events continue to escalate, understanding the operation and maintenance of dams like Tewaukon Ws-T-1-A becomes crucial for ensuring community safety and resilience in the face of evolving environmental challenges.
Year Completed |
1963 |
Dam Length |
3370 |
Dam Height |
40.3 |
River Or Stream |
WILD RICE RIVER-TR |
Primary Dam Type |
Earth |
Surface Area |
31.5 |
Drainage Area |
11.7 |
Nid Storage |
2638.8 |
Structural Height |
44 |
Outlet Gates |
Other Controlled - 1 |
Hazard Potential |
Significant |
Foundations |
Soil |
Nid Height |
44 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Wild Rice River Nr Rutland
|
21cfs |
James River At Nd-Sd State Line
|
194cfs |
Bear Creek Nr Oakes
|
5cfs |
Sheyenne River At Lisbon
|
222cfs |
Little Minnesota River Near Peever
|
27cfs |
James R At Columbia Sd
|
268cfs |
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-1-A