Amoco Dam 7 Reservoir Report
Nearby: Amoco Dam 1 Amoco Dam
Last Updated: December 13, 2025
Amoco Dam 7, located in Morton, North Dakota, along the Missouri River, was completed in 1976 by the AMOCO OIL COMPANY.
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Summary
This private earth dam stands at a height of 14 feet and has a storage capacity of 58 acre-feet for its primary purpose of "Other". The dam is regulated by the North Dakota State Water Commission (NDSWC) and meets state permitting, inspection, and enforcement requirements.
Despite being classified as having an "Undetermined" hazard potential and a "Not Rated" condition assessment, the dam's risk assessment is considered moderate. With an uncontrolled spillway and a spillway width of 50 feet, Amoco Dam 7 poses a moderate risk (score 3) with the potential for improvements. The emergency action plan (EAP) status is unclear, and there is no designated inundation map prepared for this structure. Overall, for water resource and climate enthusiasts, Amoco Dam 7 presents an intriguing case study in dam safety and risk management practices in North Dakota.
Year Completed |
1976 |
Dam Height |
14 |
River Or Stream |
MISSOURI RIVER-TR |
Primary Dam Type |
Earth |
Surface Area |
22 |
Drainage Area |
0.25 |
Nid Storage |
58 |
Hazard Potential |
Undetermined |
Foundations |
Soil |
Nid Height |
14 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Missouri River At Bismarck
|
16700cfs |
Heart River Nr Mandan
|
101cfs |
Burnt Creek Nr Bismarck
|
9cfs |
Hay Creek At Main Avenue In Bismarck
|
3cfs |
Apple Creek Nr Menoken
|
59cfs |
Sweetbriar Creek Nr Judson
|
3cfs |
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.
Amoco Dam 7
River Road Bismarck