Rundle Dam; Earl 1 Reservoir Report
Nearby: Miller Dam; Rich Hanson Dam; Kenny
Last Updated: December 6, 2025
Rundle Dam, also known as Earl 1 or Wetland 1, is a privately owned structure located in New England, North Dakota.
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Summary
Built in 1948 by the USDA NRCS, this earth-type dam stands at a height of 15 feet and spans 450 feet in length. Its primary purposes include fire protection, stock watering, and serving as a small fish pond, with a storage capacity of 86.2 acre-feet and a normal storage level of 16.8 acre-feet.
Managed by the North Dakota State Water Commission (NDSWC) and regulated by the state, Rundle Dam plays a crucial role in the local ecosystem by providing water resources for both agricultural and recreational purposes. Despite its low hazard potential, the dam has undergone modifications in 1951 to enhance its structural integrity. The spillway, with a width of 150 feet, is designed as uncontrolled, ensuring proper water flow during high inflow periods.
With a moderate risk assessment rating, Rundle Dam remains an essential infrastructure for water management in the Cannonball-TR river basin. While its condition is currently unrated, the dam's presence contributes to the overall resilience of the region's water supply and ecosystem health. As climate change continues to impact water resources, the maintenance and proper management of structures like Rundle Dam are vital in ensuring sustainable water usage and environmental preservation.
Years Modified |
1951 - Structural |
Year Completed |
1948 |
Dam Length |
450 |
Dam Height |
15 |
River Or Stream |
CANNONBALL-TR |
Primary Dam Type |
Earth |
Surface Area |
10.2 |
Drainage Area |
3.43 |
Nid Storage |
86.2 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
15 |
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.
Rundle Dam; Earl 1