Brown Dam; Leo R. Reservoir Report
Last Updated: December 6, 2025
Brown Dam; Leo R.
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Summary
is a privately-owned earth dam located in Hettinger, North Dakota, along Timber Creek. Built in 1963 by USDA NRCS, this dam serves multiple purposes such as fire protection, stock, and small fish pond. With a height of 18 feet and a length of 496 feet, it has a maximum storage capacity of 178 acre-feet and covers a surface area of 28 acres.
The dam is regulated by the North Dakota State Water Commission (NDSWC) and is inspected, permitted, and enforced by the state regulatory agency. Despite being classified as low hazard potential, the dam underwent structural modifications in 1971. It features an uncontrolled spillway with a width of 56 feet and is designed for a moderate risk level. The condition assessment is currently not rated, and emergency action plans are yet to be prepared.
Located in a rural area with minimal associated structures, Brown Dam; Leo R. presents an intriguing opportunity for water resource and climate enthusiasts to explore the intersection of dam infrastructure, environmental conservation, and agricultural practices. As a vital component in the local water management system, this dam highlights the importance of sustainable water resource management and the need for proactive risk mitigation strategies in the face of changing climate conditions.
Years Modified |
1971 - Structural |
Year Completed |
1963 |
Dam Length |
496 |
Dam Height |
18 |
River Or Stream |
TIMBER CREEK |
Primary Dam Type |
Earth |
Surface Area |
28 |
Drainage Area |
2.9 |
Nid Storage |
178 |
Structural Height |
21 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
21 |
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.
Brown Dam; Leo R.