England No.3 Reservoir Report
Nearby: England #4 England No.2
Last Updated: December 13, 2025
England No.3 is a privately owned earth dam located in Mellette, South Dakota, with a dam height of 29 feet and a length of 760 feet.
°F
°F
mph
Wind
%
Humidity
Summary
Completed in 1936, this structure serves the purpose of regulating the flow of the TR Big White Offstream river, with a maximum storage capacity of 145 acre-feet and a normal storage capacity of 110 acre-feet. The dam has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment.
Managed by the South Dakota Department of Environment and Natural Resources (DENR), England No.3 is subject to state regulation, permitting, inspection, and enforcement. Although the dam has not been modified in recent years and lacks certain emergency preparedness measures such as an Emergency Action Plan (EAP) and inundation maps, its risk assessment and management measures are currently unspecified. Given its location and purpose, England No.3 plays a crucial role in water resource management in the area and is overseen by the St. Paul District of the US Army Corps of Engineers.
Overall, England No.3 represents a significant piece of water infrastructure in South Dakota, contributing to the regulation and storage of water for various purposes in the region. With its historical significance and ongoing regulatory oversight, this dam serves as a key component in the management of the TR Big White Offstream river and underscores the importance of maintaining and monitoring such structures to ensure public safety and environmental sustainability in the face of changing climate conditions.
Year Completed |
1936 |
Dam Length |
760 |
Dam Height |
29 |
River Or Stream |
TR BIG WHITE OFFSTREAM |
Primary Dam Type |
Earth |
Hydraulic Height |
29 |
Nid Storage |
145 |
Hazard Potential |
Low |
Nid Height |
29 |
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.
England No.3