Sediment Pond 5-6 Reservoir Report
Nearby: Nelson Lake Dam Nelson Lake Auxilary
Last Updated: December 8, 2025
Sediment Pond 5-6 in Oliver, North Dakota, is a privately owned earth dam completed in 2013 with a primary purpose of sediment retention on Hagel Creek-TR.
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Summary
Designed by KEITH R. YAPP PE 4149, the dam stands at 35 feet tall and stretches 678 feet in length, with a storage capacity of 246.9 acre-feet and a surface area of 7.8 acres. It is regulated by the North Dakota State Water Commission, with state permitting, inspection, and enforcement in place to ensure its safety and compliance with regulations.
This structure has a low hazard potential and a moderate risk assessment rating, with a spillway width of 85 feet and an uncontrolled spillway type. The dam is not currently rated for condition assessment, and emergency action plans have not been prepared or updated. Despite these factors, Sediment Pond 5-6 serves a vital role in managing sediment flow and water quality in the area, making it an important asset for water resource and climate enthusiasts to monitor and support for its contributions to environmental conservation and management efforts in the region.
As part of the St. Paul District managed by the Mine Safety and Health Administration, Sediment Pond 5-6 plays a crucial role in sediment control and water management in Oliver, North Dakota. With its stone core and soil foundation, this earth dam is a key component in maintaining water quality and regulating flow on Hagel Creek-TR. Its strategic location and design make it an essential resource for the surrounding area, highlighting the importance of ongoing monitoring and support for its continued effectiveness in water resource management and climate resilience initiatives.
Year Completed |
2013 |
Dam Length |
678 |
Dam Height |
21 |
River Or Stream |
HAGEL CREEK-TR |
Primary Dam Type |
Earth |
Surface Area |
7.8 |
Drainage Area |
1.06 |
Nid Storage |
246.9 |
Structural Height |
35 |
Outlet Gates |
None |
Hazard Potential |
Low |
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.
Sediment Pond 5-6