Johnson Dam; Howard Reservoir Report
Nearby: Schock Dam; Ryan Sheep Creek Dam
Last Updated: December 7, 2025
Johnson Dam in Howard, North Dakota, also known as Wetland 1, was designed by USFWS and completed in 2000 for the primary purpose of creating a Fish and Wildlife Pond.
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Summary
Situated on Antelope Creek-TR, this earth dam stands at a height of 10.3 feet and has a length of 378 feet. With a storage capacity of 76.2 acre-feet, it provides essential habitat for wildlife in the area.
Owned privately, Johnson Dam is regulated by the North Dakota State Water Commission and undergoes regular inspections and enforcement measures. The dam has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment. Despite being uncontrolled, the spillway width of 50 feet ensures safe discharge of excess water. The risk assessment for the dam is moderate, signaling the need for continued monitoring and management measures.
Located in Grant County, North Dakota, Johnson Dam serves as a vital resource for maintaining a healthy ecosystem and supporting wildlife populations. Its construction and management reflect a commitment to conservation and environmental stewardship in the region. With a focus on fish and wildlife preservation, this dam plays a crucial role in sustaining the natural environment for generations to come.
Year Completed |
2000 |
Dam Length |
378 |
Dam Height |
10.3 |
River Or Stream |
ANTELOPE CREEK-TR |
Primary Dam Type |
Earth |
Surface Area |
10.2 |
Drainage Area |
0.96 |
Nid Storage |
76.2 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
10 |
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.
Johnson Dam; Howard