SNOFLO
 


LAKE SUNDOWN DAM

RESERVOIR LEVELS
Soil Dam South Soap Creek
May 13, 2025


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Lake Sundown Dam, also known as Lake Tubaugh Dam, is a private-owned structure located in Appanoose, Iowa, near the city of Floris. Completed in 1976, this earth dam serves primarily for recreational purposes and water supply. With a height of 51 feet and a length of 1530 feet, it has a storage capacity of 12,640 acre-feet and covers a surface area of 440 acres. Situated on South Soap Creek, the dam is regulated by the Iowa Department of Natural Resources, ensuring its safety and compliance with state regulations.

Despite being classified as having a significant hazard potential, the dam's condition assessment in 2018 reported it as satisfactory. The spillway, with a width of 60 feet, is uncontrolled, and the dam is designed to handle a maximum discharge. The risk assessment for Lake Sundown Dam indicates a moderate level of risk, with a rating of 3. Regular inspections are conducted every 5 years to monitor its condition and address any maintenance or safety concerns that may arise. Overall, Lake Sundown Dam stands as a vital water resource and recreational asset in the region, contributing to the local ecosystem and providing opportunities for outdoor activities.

Year_Completed 1976
Dam_Height 51
River_Or_Stream SOUTH SOAP CREEK
Dam_Length 1530
Primary_Dam_Type Earth
Surface_Area 440
Drainage_Area 21.7
Nid_Storage 12640
Hazard_Potential Significant
Foundations Soil
Nid_Height 51
       

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