May Coulee, located in Jackson, Wisconsin, along Sands Creek, is a privately-owned earth dam primarily used for recreational purposes. Completed in 1976, this dam stands at a height of 22 feet and has a maximum storage capacity of 51 acre-feet. With a drainage area of 2.9 square miles and a surface area of 7 acres, May Coulee provides a serene setting for outdoor enthusiasts to enjoy water-based activities.

Despite its low hazard potential and fair condition assessment, May Coulee underwent modifications in 2008 to ensure its structural integrity. The dam features an uncontrolled spillway type and has a maximum discharge capacity of 30 cubic feet per second. While the risk assessment indicates a moderate risk level, the dam continues to be inspected every 10 years to maintain its safety and functionality.

With its picturesque location and recreational opportunities, May Coulee serves as a vital water resource for the community, offering a peaceful retreat for nature lovers and climate enthusiasts to appreciate the beauty and importance of sustainable water management practices.