Glenharold Mine 143-84-09-3h Reservoir Report
Last Updated: December 15, 2025
Glenharold Mine 143-84-09-3h is a private earth dam located in Oliver, North Dakota, with a primary purpose of providing fire protection, stock, or serving as a small fish pond.
°F
°F
mph
Wind
%
Humidity
Summary
The dam, completed in 1980, has a height of 20 feet and a storage capacity of 59.1 acre-feet. It is regulated by the North Dakota State Water Commission and undergoes regular inspections, with a low hazard potential and a moderate risk assessment rating.
Situated on the Missouri River tributary, the dam has a surface area of 3.5 acres and serves a drainage area of 0.86 square miles. The spillway is uncontrolled with a width of 10 feet, and there are no outlet gates associated with the structure. While the condition assessment is marked as "Not Rated," the dam's risk management measures and emergency preparedness status are not explicitly mentioned. Despite its low hazard potential, the dam plays a crucial role in providing essential services to the surrounding area and maintaining water resources for various purposes.
Overall, Glenharold Mine 143-84-09-3h is a vital water resource infrastructure in North Dakota, serving multiple functions and contributing to the local ecosystem. With its completion in 1980, the dam continues to provide fire protection, stock water, and recreational opportunities in the region. While the risk assessment indicates a moderate level of risk, the dam's structural integrity and regulatory oversight ensure its safe operation and maintenance. As a point of interest for water resource and climate enthusiasts, this earth dam exemplifies the intersection of human intervention and natural water systems in the ongoing management of water resources.
Year Completed |
1980 |
Dam Height |
20 |
River Or Stream |
MISSOURI-TR |
Primary Dam Type |
Earth |
Surface Area |
3.5 |
Drainage Area |
0.86 |
Nid Storage |
59.1 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Square Butte Creek Below Center
|
2cfs |
Knife River At Hazen
|
48cfs |
Sweetbriar Creek Nr Judson
|
3cfs |
Spring Creek At Zap
|
5cfs |
Heart River Nr Mandan
|
101cfs |
Burnt Creek Nr Bismarck
|
9cfs |
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.
Glenharold Mine 143-84-09-3h
State Highway 200 Alternate Oliver County
Northern Boundary Of Knife River Indian Villages National Historic Site To Southern Boundary Of Knife River Indian Villages National Historic Site