Warren Jackson Dam Reservoir Report
Nearby: Loiseau Dam Jacobs Dam
Last Updated: December 13, 2025
Warren Jackson Dam, located in Moody, South Dakota, is a privately owned structure designed by Ducks Unlimited for the primary purpose of water resource management on TR.
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Summary
Squaw Creek. Completed in 1999, this earth dam stands at a height of 10 feet and has a length of 350 feet, providing a storage capacity of 56 acre-feet. With a low hazard potential and a moderate risk assessment rating, the dam serves as a crucial component in the local watershed.
Managed by the South Dakota Department of Environment and Natural Resources, Warren Jackson Dam is state regulated and undergoes regular inspections, ensuring its structural integrity and functionality. Despite being uncontrolled, the dam features a spillway width of 100 feet to mitigate potential overflow events. With no outlet gates and a drainage area of 4 square miles, the dam plays a vital role in flood control and water storage for the surrounding community.
Warren Jackson Dam's presence on TR. Squaw Creek contributes to the overall water resource management efforts in the region. With its strategic location and design, this earth dam serves as a key infrastructure for maintaining water levels, reducing flood risks, and supporting environmental sustainability initiatives. As a focal point for climate enthusiasts and water resource advocates, the dam underscores the importance of effective dam regulation and maintenance in ensuring water security for future generations.
Year Completed |
1999 |
Dam Length |
350 |
Dam Height |
10 |
River Or Stream |
TR. SQUAW CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
10 |
Drainage Area |
4 |
Nid Storage |
56 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
10 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Warren Jackson Dam