H. Holm Reservoir Report
Nearby: J. Reichert B. Schuh
Last Updated: December 12, 2025
Located in Dewey County, South Dakota, H.
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Summary
Holm is a privately owned earth dam with a height of 20 feet and a length of 450 feet. Completed in 1958, this structure serves the primary purpose of water resource management, specifically on the TR MOREAU river. With a storage capacity of 75 acre-feet, the dam has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment.
Managed by the Natural Resources Conservation Service, H. Holm is regulated, permitted, inspected, and enforced by the South Dakota Department of Environment and Natural Resources. Despite not having a designated primary purpose, the dam plays a crucial role in controlling water flow and storage in the region. With a maximum discharge capacity of 2135 cubic feet per second, the dam contributes to flood control measures and supports agricultural activities in the area.
While lacking detailed information on emergency preparedness and risk management measures, H. Holm remains a key infrastructure asset within the St. Paul District of South Dakota. As climate change continues to impact water resources, the importance of structures like H. Holm in ensuring sustainable water management practices cannot be understated. Enthusiasts of water resources and climate will find H. Holm to be a fascinating case study in the intersection of infrastructure, regulation, and environmental stewardship.
Year Completed |
1958 |
Dam Length |
450 |
Dam Height |
20 |
River Or Stream |
TR MOREAU |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
75 |
Hazard Potential |
Low |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Moreau R Near Whitehorse Sd
|
35cfs |
Moreau R Near Faith Sd
|
14cfs |
Grand R At Little Eagle Sd
|
47cfs |
Oak Cr Near Wakpala Sd
|
10cfs |
Cedar Creek Nr Raleigh
|
20cfs |
North Fork Grand R Near White Butte Sd
|
9cfs |
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.
H. Holm