Norman Schillinstad Reservoir Report
Nearby: Ted Molstad Dam A.W. Spiry
Last Updated: December 13, 2025
Norman Schillinstad, located in Walworth, South Dakota, is a privately owned earth dam with a height of 20 feet and a length of 450 feet.
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Summary
Completed in 1954, this dam has a storage capacity of 142 acre-feet and a maximum discharge rate of 1800 cubic feet per second. Despite its low hazard potential, the dam is regulated, permitted, inspected, and enforced by the South Dakota Department of Agriculture and Natural Resources.
Managed by the Natural Resources Conservation Service, Norman Schillinstad serves multiple purposes such as flood control, irrigation, and water supply for the surrounding area. The dam remains in good condition, although its last inspection dates back to October 1979. While it has not been rated for its condition, the dam poses a low risk, and no emergency action plan has been prepared or updated for it.
With its strategic location along the TR MISSONot RatedI river or stream, Norman Schillinstad plays a crucial role in water resource management in the region. As an essential infrastructure for water storage and flood mitigation, this dam stands as a testament to the importance of maintaining and monitoring our water resources in the face of changing climate conditions.
Year Completed |
1954 |
Dam Length |
450 |
Dam Height |
20 |
River Or Stream |
TR MISSONot RatedI |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Drainage Area |
1 |
Nid Storage |
142 |
Hazard Potential |
Low |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Oak Cr Near Wakpala Sd
|
10cfs |
Grand R At Little Eagle Sd
|
47cfs |
Moreau R Near Whitehorse Sd
|
35cfs |
Beaver Creek Bl Linton
|
39cfs |
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.
Norman Schillinstad