Sd Noname 135 Reservoir Report
Nearby: Sd Noname 189 Sd Noname 188
Last Updated: December 6, 2025
Sd Noname 135, a privately owned dam located in Jackson, South Dakota, stands as a testament to water resource management in the region.
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Summary
Constructed in 1940, this Earth-type dam spans 600 feet in length and reaches a height of 20 feet, with a storage capacity of 100 acre-feet. Situated on the TR-WHITE RIVER, this structure is regulated by the South Dakota Department of Environment and Natural Resources (DENR), ensuring compliance with state jurisdiction and permitting requirements.
Despite its low hazard potential, Sd Noname 135 has not been rated for its condition assessment, highlighting the need for ongoing monitoring and maintenance. The dam's emergency action plan (EAP) status remains unclear, signaling a potential area for improvement in terms of preparedness for unforeseen events. With a maximum discharge capacity of 2000 cubic feet per second, the dam plays a crucial role in flood control and water supply management for the surrounding area.
As a critical infrastructure asset in the St. Paul District, Sd Noname 135 is a key component of the region's water resource system. With its historical significance and operational importance, this dam serves as a reminder of the interconnectedness between water resources, climate resilience, and public safety in South Dakota.
Year Completed |
1940 |
Dam Length |
600 |
Dam Height |
20 |
River Or Stream |
TR-WHITE RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
100 |
Hazard Potential |
Low |
Nid Height |
20 |
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 135