SNOFLO
 


RAINBOW LAKE DAM

RESERVOIR LEVELS
Soil Dam Tr-Iowa River
May 13, 2025


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Rainbow Lake Dam in Tama, Iowa, stands as a testament to the importance of water resource management and climate resilience. Completed in 1952, this private earth dam serves multiple purposes, including recreation, fire protection, and providing a small fish pond. With a height of 30 feet and a length of 450 feet, the dam holds a storage capacity of 135 acre-feet, with a normal storage level of 80 acre-feet.

Located on the TR-Iowa River, Rainbow Lake Dam is regulated by the Iowa Department of Natural Resources, ensuring that it meets state inspection, permitting, and enforcement standards. Despite its low hazard potential, the dam is associated with moderate risk, highlighting the need for ongoing monitoring and risk management measures. The dam's condition is currently rated as "Not Rated," indicating a need for further assessment and potentially the development of an Emergency Action Plan (EAP) to address any unforeseen events.

In the care of private ownership, Rainbow Lake Dam serves as a vital resource for the local community in Chelsea and beyond. Its presence not only supports recreational activities but also contributes to the broader ecosystem and water management efforts in the area. As water resource and climate enthusiasts, understanding and supporting the maintenance and resilience of structures like Rainbow Lake Dam is crucial for safeguarding our natural environment and ensuring a sustainable future for generations to come.

Year_Completed 1952
Dam_Height 30
River_Or_Stream TR-IOWA RIVER
Dam_Length 450
Primary_Dam_Type Earth
Surface_Area 8
Drainage_Area 0.23
Nid_Storage 135
Hazard_Potential Low
Foundations Soil
Nid_Height 30
       

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