Dietz Dam; John P Reservoir Report
Nearby: Mesling Dam; Peter D Belfield Rr Dam
Last Updated: December 6, 2025
Located in Stark County, North Dakota, the Dietz Dam; John P is a privately owned earth dam constructed in 1972 by USDA NRCS for fire protection, stock, and small fish pond purposes.
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Summary
Standing at a height of 18 feet with a length of 348 feet, this dam has a storage capacity of 52 acre-feet and a surface area of 6 acres, serving the Norwegian Creek-TR. Despite its low hazard potential, the dam is regulated, permitted, inspected, and enforced by the North Dakota State Water Commission, ensuring its safety and compliance with state standards.
With a spillway width of 40 feet and an uncontrolled spillway type, the Dietz Dam; John P is designed to manage water flow during heavy rainfall events. While it has not been rated for its condition, the dam is considered to have a moderate risk level based on a risk assessment score of 3. Although there are no outlet gates or associated structures, the dam meets the necessary guidelines for emergency action plans, indicating a proactive approach to potential hazards and risks associated with the structure.
Overall, the Dietz Dam; John P serves as a vital resource for fire protection, livestock watering, and recreational fishing in the local area. Its strategic location and design, along with regular inspections and enforcement, ensure the safety of the surrounding community and the efficient management of water resources in North Dakota. As a significant part of the state's infrastructure, this dam stands as a testament to the importance of sustainable water management practices in the face of changing climate conditions.
Year Completed |
1972 |
Dam Length |
348 |
Dam Height |
18 |
River Or Stream |
NORWEGIAN CREEK-TR |
Primary Dam Type |
Earth |
Surface Area |
6 |
Drainage Area |
1 |
Nid Storage |
52 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
18 |
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.
Dietz Dam; John P