Cth "E" Dike Reservoir Report
Nearby: Rainbow Sawyer Dike
Last Updated: December 5, 2025
Cth "E" Dike in Oneida, Wisconsin, is a crucial structure with a primary purpose of hydroelectric power generation and flood risk reduction along the Wisconsin River.
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Summary
Completed in 1935, this earth dam stands at 24 feet tall and stretches 1650 feet in length, providing storage for up to 46,006 acre-feet of water. Managed by the Federal Energy Regulatory Commission, this high-hazard potential dam has a maximum discharge capacity of 32,500 cubic feet per second, highlighting its significance in water resource management and climate resilience efforts.
Despite its age, the condition assessment of Cth "E" Dike is currently listed as "Not Available," necessitating further inspections and risk management measures to ensure its structural integrity and operational efficiency. The dam has been associated with four other structures and is under state jurisdiction with permitting and enforcement responsibilities. The high risk level of this dam underscores the importance of having emergency action plans in place and regular assessments to mitigate potential hazards and protect downstream communities and ecosystems in case of emergencies.
As water resource and climate enthusiasts, understanding the critical role of infrastructure like Cth "E" Dike in managing water resources, generating clean energy, and reducing flood risks is essential. By staying informed about the condition, risks, and management measures associated with dams like Cth "E" Dike, enthusiasts can contribute to sustainable water management practices and climate adaptation strategies to safeguard our environment for future generations.
Year Completed |
1935 |
Dam Length |
1650 |
Dam Height |
24 |
River Or Stream |
Wisconsin River |
Primary Dam Type |
Earth |
Nid Storage |
46006 |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
24 |
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.
Cth "E" Dike
County Highway D Town of Newbold