R.G. Goddard Reservoir Report
Nearby: X. Ziltner U S A
Last Updated: December 12, 2025
R.G.
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Summary
Goddard is a privately owned earth dam located in Sully, South Dakota, with a height of 21 feet and a length of 630 feet. Completed in 1946, this dam has a storage capacity of 151 acre-feet and serves various regulatory purposes under the oversight of the South Dakota Department of Environment and Natural Resources. The dam is situated on the TR MISSONot RatedI water body within the St. Paul District of the US Army Corps of Engineers.
Despite being classified as having a low hazard potential, the condition assessment of R.G. Goddard is currently labeled as "Not Rated." This dam has not undergone recent inspections or assessments, and its emergency action plan status and risk management measures remain unclear. As a key component of the local water resource infrastructure, enthusiasts and stakeholders may benefit from advocating for updated evaluations and risk mitigation strategies to ensure the long-term safety and effectiveness of R.G. Goddard.
With its historical significance dating back to the mid-20th century, R.G. Goddard represents a vital piece of South Dakota's water resource management system. As climate change continues to impact water availability and quality, understanding the condition and functionality of dams like R.G. Goddard becomes increasingly crucial for adapting to future water resource challenges. Engaging with regulatory agencies and advocating for proactive maintenance and monitoring of dams can contribute to the resilience of water infrastructure in the face of evolving climatic conditions.
Year Completed |
1946 |
Dam Length |
630 |
Dam Height |
21 |
River Or Stream |
TR MISSONot RatedI |
Primary Dam Type |
Earth |
Hydraulic Height |
21 |
Nid Storage |
151 |
Hazard Potential |
Low |
Nid Height |
21 |
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.
R.G. Goddard