Carlson-Tande Dam Reservoir Report
Nearby: Fuglestad Dam; Rod Galde Dam; Lloyd
Last Updated: December 14, 2025
Located in Griggs, North Dakota, the Carlson-Tande Dam is a key water resource managed by the local government with oversight from the North Dakota State Water Commission.
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Summary
Built in 1967 by the USDA NRCS, this earth dam stands at a height of 28.5 feet and serves primarily for recreational purposes along the Sheyenne River. With a storage capacity of 232.23 acre-feet and a surface area of 15.79 acres, the dam plays a crucial role in providing water-based activities for the surrounding community.
Despite being classified as having a low hazard potential, the Carlson-Tande Dam is subject to state regulations and inspections to ensure its structural integrity and safety. With a moderate risk assessment score of 3, the dam is equipped with an uncontrolled spillway and lacks outlet gates. While the dam's condition assessment is currently not rated, ongoing risk management measures are in place to address any potential issues that may arise in the future. As a notable feature along the Sheyenne River, the Carlson-Tande Dam stands as a testament to the importance of water resource management and climate resilience in the region.
Year Completed |
1967 |
Dam Length |
425 |
Dam Height |
28.5 |
River Or Stream |
SHEYENNE RIVER-TR |
Primary Dam Type |
Earth |
Surface Area |
15.79 |
Drainage Area |
1.72 |
Nid Storage |
232.23 |
Structural Height |
28.5 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
29 |
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.
Carlson-Tande Dam