Bay City 1 is a vital Earth dam located in Bay City, Wisconsin, designed by the USDA NRCS and completed in 1965. This dam serves the primary purposes of debris control and flood risk reduction along the Tributary of the Mississippi River. With a height of 42 feet and a hydraulic height of 39 feet, Bay City 1 has a storage capacity of 340 acre-feet and a normal storage of 80 acre-feet, covering a surface area of 12 acres.

Managed by the WIDNR, Bay City 1 has a low hazard potential and a moderate risk assessment rating. Although the condition assessment is not rated, the dam undergoes inspections every 10 years to ensure its structural integrity and regulatory compliance. The dam features an uncontrolled spillway with a width of 60 feet and a maximum discharge capacity of 199 cubic feet per second, contributing to its effective flood risk reduction capabilities in the region.

With its strategic location and engineering design, Bay City 1 plays a crucial role in protecting the surrounding area from potential flooding and debris flow. As a key infrastructure managed by the local government, this Earth dam stands as a testament to effective water resource management and climate resilience efforts in Wisconsin.