Summary
This earth dam, with a height of 47 feet and a hydraulic height of 38 feet, impounds the South Sandstone Creek and provides a maximum storage capacity of 1,890 acre-feet. The dam spans 2,908 feet in length and covers a surface area of 119 acres, serving a drainage area of 48 square miles.
Managed by the DNRC and located in Fallon County, South Sandstone Creek Dam boasts an uncontrolled spillway with a width of 280 feet and a maximum discharge capacity of 2,050 cubic feet per second. The dam is state-regulated and inspected, with a significant hazard potential and a moderate risk assessment rating. While the dam's condition remains unrated, the emergency action plan was last revised in 2019, showcasing the commitment to safeguarding the surrounding community in the event of a crisis. For water resource and climate enthusiasts, South Sandstone Creek Dam stands out as a critical piece of infrastructure contributing to sustainable irrigation practices in Montana's agricultural landscape.
Year Completed |
1975 |
Dam Length |
2908 |
Dam Height |
47 |
River Or Stream |
SOUTH SANDSTONE CREEK |
Primary Dam Type |
Earth |
Surface Area |
119 |
Hydraulic Height |
38 |
Drainage Area |
48 |
Nid Storage |
1890 |
Structural Height |
49 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Significant |
Foundations |
Rock, Soil |
Nid Height |
49 |
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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
South Sandstone FAS
|
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MAIER RESERVOIR
|
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Baker City Campground
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South Sandstone Creek Dam