Upper Turtle R.Fld.Ret.#8 Reservoir Report
Last Updated: December 10, 2025
Upper Turtle R.Fld.Ret.#8 is a flood risk reduction structure located in Larimore, North Dakota.
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Summary
Built in 1973 by the USDA NRCS, this earth dam stands at a height of 34.8 feet and has a normal storage capacity of 52 acre-feet. It is situated on the South Branch Turtle River-TR and is regulated by the NDSWC, with state permitting, inspection, and enforcement in place to ensure its safety and functionality.
With a hazard potential classified as significant and a risk assessment rating of moderate (3), Upper Turtle R.Fld.Ret.#8 plays a crucial role in managing water resources and mitigating flood risks in the area. Although its condition assessment is currently not rated, the dam's design and construction by the Natural Resources Conservation Service demonstrate a commitment to sustainable water management practices. As a key infrastructure for flood control, this structure highlights the importance of proactive measures in addressing climate change impacts on water resources.
As water resource and climate enthusiasts, understanding the significance of structures like Upper Turtle R.Fld.Ret.#8 is essential in safeguarding communities and ecosystems against the growing threats of floods and extreme weather events. By supporting state-regulated initiatives and engaging in risk management measures, we can work towards a more resilient and sustainable water future for generations to come.
Year Completed |
1973 |
Dam Height |
34.8 |
River Or Stream |
SOUTH BRANCH TURTLE RIVER-TR |
Primary Dam Type |
Earth |
Surface Area |
11 |
Drainage Area |
5.3 |
Nid Storage |
1190 |
Outlet Gates |
None |
Hazard Potential |
Significant |
Foundations |
Soil |
Nid Height |
35 |
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.
Upper Turtle R.Fld.Ret.#8