Day, also known as Clam Lake West Fork, is a dam located in Ashland, Wisconsin, with a primary purpose of recreation. Built in 1936, this earth dam stands at a height of 12 feet and has a maximum storage capacity of 230 acre-feet. The dam, situated on the West Fork Chippewa River, covers a surface area of 10 acres and has a drainage area of 19 square miles.

Despite being classified as having a low hazard potential and fair condition assessment, Day poses a very high risk, according to the data. The dam has undergone modifications in 1937 and 2013 and is under the regulatory jurisdiction of the Wisconsin Department of Natural Resources. With a maximum discharge capacity of 400 cubic feet per second and a controlled spillway type, Day serves as a crucial structure for flood control in the region.

Ensuring the safety and proper maintenance of Day is paramount, given its importance for both recreational purposes and flood management. Regular inspections and adherence to state regulations are essential to mitigate any potential risks associated with the dam and to protect the surrounding communities and ecosystems. Climate enthusiasts and water resource experts alike must stay vigilant in monitoring and managing the condition of Day to uphold its functionality and safety standards.