School Land Reservoir Report
Nearby: Firesteel Gpa Dam Isabel
Last Updated: December 13, 2025
School Land is a privately owned dam located in Dewey, South Dakota, along the TR Moreau River.
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Summary
Built in 1938, this Earth-type dam stands at a height of 15 feet and has a length of 500 feet, providing a storage capacity of 77 acre-feet. Despite being classified as having a low hazard potential, the dam has not been rated for its current condition as of the last inspection in May 1994.
Managed by the South Dakota Department of Agriculture and Natural Resources (DANR), School Land is regulated and inspected by state authorities, ensuring its compliance with safety standards and permitting requirements. While the dam's primary purpose and associated structures are not specified, its location in a rural area and proximity to the St. Paul District of the US Army Corps of Engineers highlight its importance in water resource management in the region.
With its historical significance and role in water storage along the TR Moreau River, School Land serves as a key infrastructure for local water resource management and climate resilience efforts in South Dakota. As climate change continues to impact water availability and quality, the maintenance and monitoring of dams like School Land are crucial for ensuring the sustainable use of water resources and protecting communities from potential hazards.
Year Completed |
1938 |
Dam Length |
500 |
Dam Height |
15 |
River Or Stream |
TR MOREAU |
Hydraulic Height |
15 |
Nid Storage |
77 |
Hazard Potential |
Low |
Nid Height |
15 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Moreau R Near Whitehorse Sd
|
35cfs |
Grand R At Little Eagle Sd
|
47cfs |
Moreau R Near Faith Sd
|
14cfs |
Oak Cr Near Wakpala Sd
|
10cfs |
Cedar Creek Nr Raleigh
|
20cfs |
Cannonball River Nr Raleigh
|
40cfs |
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.
School Land