Snavely No. 1 Reservoir Report
Nearby: Pauli Dam Snavely No. 2
Last Updated: December 13, 2025
Snavely No.
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Summary
1 is a privately owned earth dam located in Tripp, South Dakota, along TR. OLD LODGE CREEK. Built by KONECHNE ENG., this dam stands at 25 feet in height and has a storage capacity of 174 acre-feet, with a maximum discharge rate of 945 cubic feet per second. The spillway is uncontrolled with a width of 70 feet, and the dam is classified as having a low hazard potential.
Despite its low hazard potential, Snavely No. 1 is regulated by the South Dakota Department of Environment and Natural Resources (DENR), with the state having jurisdiction over its permitting, inspection, and enforcement. The dam is in moderate risk (3) category, emphasizing the importance of effective risk management measures and emergency preparedness. With its strategic location and critical role in water resource management, Snavely No. 1 serves as a significant infrastructure contributing to the overall resilience of the region's water supply and climate adaptation efforts.
Dam Height |
25 |
River Or Stream |
TR. OLD LODGE CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
25 |
Drainage Area |
1 |
Nid Storage |
174 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
White R Near Oacoma Sd
|
105cfs |
Keya Paha R Near Keyapaha Sd
|
33cfs |
Keya Paha R At Wewela Sd
|
54cfs |
White River Near White River
|
42cfs |
Platte Creek Near Platte
|
3cfs |
Little White R Below White River Sd
|
141cfs |
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.
Snavely No. 1