England #6 Reservoir Report
Nearby: England #2 Rassmussen #1
Last Updated: December 13, 2025
England #6 is a privately owned dam located in Mellette, South Dakota, with a primary purpose that is not specified in the data.
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Summary
It was completed in 1936 and has a height of 18 feet and a length of 780 feet, providing a storage capacity of 160 acre-feet. The dam is regulated by the South Dakota Department of Environment and Natural Resources (DENR) and is inspected, permitted, and enforced by the state agency.
With a low hazard potential and a condition assessment of "Not Rated," England #6 is considered to be in stable condition. The dam has not been modified in recent years and does not have an emergency action plan (EAP) in place. The risk assessment and management measures for the dam are not specified in the data, indicating a potential area for improvement in terms of emergency preparedness and response.
Located on the TR Cottonwood Offstream river or stream and falling under the jurisdiction of the St. Paul District of the US Army Corps of Engineers (USACE), England #6 serves as a crucial infrastructure for water resource management in the region. Climate and water resource enthusiasts may find this dam's historical significance and operational details intriguing as they consider the broader implications of dam infrastructure on water availability and climate resilience in South Dakota.
Year Completed |
1936 |
Dam Length |
780 |
Dam Height |
18 |
River Or Stream |
TR COTTONWOOD OFFSTREAM |
Primary Dam Type |
Earth |
Hydraulic Height |
18 |
Nid Storage |
160 |
Hazard Potential |
Low |
Nid Height |
18 |
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 #6