Laintz Dam; Dan Reservoir Report
Nearby: Fiest Dam; Peter 1 Fiest Dam; Peter 2
Last Updated: December 13, 2025
Laintz Dam, also known as Dan, is a privately owned earth dam located in Sioux County, North Dakota.
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Summary
Built in 1976 by USDA NRCS, this dam serves multiple purposes including fire protection, stock containment, and as a small fish pond. The dam has a height of 17 feet and a length of 700 feet, with a storage capacity of 87 acre-feet and a surface area of 10 acres. It is regulated by the North Dakota State Water Commission and is inspected regularly to ensure its structural integrity.
The dam is situated on Porcupine Creek, tributary to the Missouri River, within the jurisdiction of the NDSWC. With a spillway width of 45 feet and uncontrolled spillway type, the dam has a low hazard potential and a moderate risk assessment rating. While the condition assessment is currently not rated, the dam's risk management measures are in place to mitigate any potential risks. The dam does not have outlet gates and is not associated with any locks, making it a relatively simple structure with a primary focus on water storage for various uses.
Overall, Laintz Dam; Dan represents a vital water resource in the region, providing essential services for fire protection, stock containment, and recreational activities. As a privately owned structure, it is subject to state regulations and inspections to ensure public safety and environmental compliance. With its modest size and low hazard potential, the dam plays a crucial role in water management and conservation efforts in North Dakota.
Year Completed |
1976 |
Dam Length |
700 |
Dam Height |
17 |
River Or Stream |
PORCUPINE CREEK-TR |
Primary Dam Type |
Earth |
Surface Area |
10 |
Drainage Area |
0.8 |
Nid Storage |
87 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
17 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Cedar Creek Nr Raleigh
|
20cfs |
Cannonball River Nr Raleigh
|
40cfs |
Cannonball River At Breien
|
96cfs |
Grand R At Little Eagle Sd
|
47cfs |
Oak Cr Near Wakpala Sd
|
10cfs |
Beaver Creek Bl Linton
|
39cfs |
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.
Laintz Dam; Dan