Mosbrucker Dam; Anton Reservoir Report

Last Updated: December 9, 2025

Mosbrucker Dam, also known as Anton Dam, is a privately owned structure located in Oliver County, North Dakota.


°F

°F

mph

Wind

%

Humidity

Summary

Built in 1967 by the USDA NRCS, this earth dam stands at a height of 26 feet and spans a length of 590 feet. Its primary purpose is for recreation, offering a surface area of 33.9 acres and a normal storage capacity of 301 acre-feet.

Situated on Square Butte Creek, Mosbrucker Dam is regulated by the North Dakota State Water Commission and is subject to state jurisdiction, permitting, inspection, and enforcement. Despite being classified as having a low hazard potential, the dam has a moderate risk assessment rating. The spillway, with a width of 180 feet, is uncontrolled in case of excess water flow. While the structure has not been assessed for condition, it remains a popular destination for water resource and climate enthusiasts seeking outdoor recreation in the area.

With its scenic location and recreational offerings, Mosbrucker Dam provides a tranquil spot for visitors to enjoy the beauty of North Dakota's natural landscape. As it continues to be monitored by state regulators and agencies, the dam serves as both a functional structure and a haven for outdoor enthusiasts looking to connect with nature. Its history, design, and risk assessment make it a fascinating case study for those interested in water resource management and climate resilience in the region.

Year Completed

1967

Dam Length

590

Dam Height

26

River Or Stream

SQUARE BUTTE CREEK-TR

Primary Dam Type

Earth

Surface Area

33.9

Drainage Area

5.3

Nid Storage

439

Outlet Gates

None

Hazard Potential

Low

Foundations

Soil

Nid Height

26
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.