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PATTISON DAM

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March 30, 2025


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Pattison Dam, located in Guttenberg, Iowa, is a privately owned structure that has been regulated and permitted by the Iowa Department of Natural Resources. Completed in 2008, this earth-type dam stands at a height of 68 feet and spans a length of 558 feet. With a normal storage capacity of 160 acre-feet, the dam serves the primary purpose of "Other," indicating its role in managing water resources for various uses.

The dam's spillway type is classified as "Uncontrolled," with a spillway width of 2 feet. Despite its low hazard potential and satisfactory condition assessment as of 2009, Pattison Dam is subject to moderate risk due to its location along the TR-Mississippi River. The risk management measures for the dam are not specified, suggesting the need for ongoing monitoring and maintenance to ensure its continued safety and functionality in the face of changing environmental conditions.

For water resource and climate enthusiasts, Pattison Dam offers a fascinating case study in dam construction, regulation, and risk assessment. As a key infrastructure element within the St. Paul District of the US Army Corps of Engineers, the dam plays a crucial role in managing water flow and storage along the Mississippi River. Its design by Michael Ryan of Howard R. Green Co. highlights the expertise and collaboration required to create sustainable water management solutions in a changing climate.

Year_Completed 2008
Dam_Height 68
River_Or_Stream TR- MISSISSIPPI RIVER
Dam_Length 558
Primary_Dam_Type Earth
Surface_Area 8.8
Drainage_Area 0.03
Nid_Storage 208
Hazard_Potential Low
Foundations Rock, Soil
Nid_Height 68
       

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