L. Ingalls No.1 Reservoir Report
Nearby: Cecil Vig Russell Dam
Last Updated: December 6, 2025
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Summary
Ingalls No.1 is a privately owned earth dam located in Meade, South Dakota, along the TR CHEYENNE River. Built in 1942 by the Natural Resources Conservation Service, this dam stands at a height of 15 feet and has a storage capacity of 112 acre-feet. With a low hazard potential, it has not been rated for its condition assessment, and its emergency action plan status is unknown.
Despite being a privately owned structure, L. Ingalls No.1 falls under state jurisdiction and is regulated by the South Dakota Department of Environment and Natural Resources. It is permitted, inspected, and enforced by state authorities, showcasing a commitment to ensuring its safety and compliance with regulations. The dam has not undergone any modifications since its completion in 1942, and its risk assessment, management measures, and emergency preparedness status are currently unclear.
Located within the St. Paul District of the US Army Corps of Engineers, L. Ingalls No.1 plays a crucial role in water resource management in the area. For water resource and climate enthusiasts, this dam presents an interesting case study of a privately owned structure that is regulated by state authorities and holds significance for the surrounding community in terms of water storage and flood protection.
Year Completed |
1942 |
Dam Length |
445 |
Dam Height |
15 |
River Or Stream |
TR CHEYENNE |
Primary Dam Type |
Earth |
Hydraulic Height |
15 |
Nid Storage |
112 |
Hazard Potential |
Low |
Nid Height |
15 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Moreau R Near Faith Sd
|
14cfs |
Belle Fourche River Near Elm Springs
|
17900cfs |
Belle Fourche R Near Sturgis Sd
|
34cfs |
Horse Cr Above Vale Sd
|
13cfs |
Cheyenne R Near Plainview Sd
|
0cfs |
Elk Cr Near Elm Springs Sd
|
0cfs |
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.
L. Ingalls No.1