Sd Noname 238 Reservoir Report
Nearby: Nelson Dam Sd Noname 242
Last Updated: December 6, 2025
Sd Noname 238 is a privately owned dam located in Haakon, South Dakota, with a significant hazard potential.
°F
°F
mph
Wind
%
Humidity
Summary
The dam, completed in 1966, is an earth-fill structure standing at a height of 26 feet and with a length of 145 feet. It has a storage capacity of 146 acre-feet and a maximum discharge of 1300 cubic feet per second.
Managed by the South Dakota Department of Environment and Natural Resources (DENR), Sd Noname 238 is regulated, permitted, inspected, and enforced by the state agency. Despite its critical hazard potential, the dam's condition assessment is currently not rated, and there is no information available on emergency action plans or risk management measures. The dam sits on the TR-BAD RIVER OFFSTREAM and is under the jurisdiction of the St. Paul District of the US Army Corps of Engineers.
With its location in a vital water resource area and the potential impact on the surrounding environment and communities, Sd Noname 238 presents a crucial monitoring and management challenge for water resource and climate enthusiasts. Further assessment and action are needed to ensure the safety and sustainability of this dam in South Dakota.
Year Completed |
1966 |
Dam Length |
145 |
Dam Height |
26 |
River Or Stream |
TR-BAD RIVER OFFSTREAM |
Primary Dam Type |
Earth |
Hydraulic Height |
26 |
Nid Storage |
146 |
Hazard Potential |
Significant |
Nid Height |
26 |
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.
Sd Noname 238