Sediment Pond 12-1 Reservoir Report
Last Updated: December 8, 2025
Sediment Pond 12-1 is a privately owned Earth dam located in Oliver, North Dakota, along the Hagel Creek-TR stream.
°F
°F
mph
Wind
%
Humidity
Summary
Designed by KEITH R. YAPP, PE 4149, this structure serves a primary purpose that is classified as "Other", with a capacity to hold a maximum storage of 439.9 acre-feet of water. The dam stands at a height of 24 feet and has a length of 782.5 feet, providing a surface area of 12.1 acres and draining an area of 1.68 square miles.
Despite being categorized as having a low hazard potential, Sediment Pond 12-1 is regulated by the North Dakota State Water Commission and undergoes regular inspections to ensure its integrity and safety. The dam features an uncontrolled spillway with a width of 100 feet, as well as a single vertical lift outlet gate. While the structure's condition assessment is currently listed as "Not Rated", the risk assessment indicates a moderate risk level (3), prompting the need for ongoing risk management measures to mitigate potential issues and ensure the safety of the surrounding area.
Overall, Sediment Pond 12-1 stands as a crucial component of water resource management in the region, providing storage capacity for sediment and runoff from the Hagel Creek-TR stream. As a privately owned dam with state regulatory oversight, its design and construction adhere to strict guidelines to minimize environmental impact and protect downstream areas from flooding. By maintaining a proactive approach to risk assessment and management, this structure plays a vital role in safeguarding water resources and enhancing climate resilience in the local community.
Dam Length |
782.5 |
Dam Height |
24 |
River Or Stream |
HAGEL CREEK-TR |
Primary Dam Type |
Earth |
Surface Area |
12.1 |
Drainage Area |
1.68 |
Nid Storage |
439.9 |
Outlet Gates |
Vertical Lift - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
24 |
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.
Sediment Pond 12-1