Dells Lake, also known as Dells Millpond, is a picturesque reservoir located in Eau Claire, Wisconsin. Managed privately, this dam structure was completed in 1866 with a primary purpose of recreation. Boasting a gravity dam type, Dells Lake stands at a height of 27 feet and has a storage capacity of 560 acre-feet, making it a popular destination for water resource and climate enthusiasts alike.

With a surface area of 75 acres and a drainage area of 66 acres, Dells Lake offers a tranquil setting for outdoor activities such as fishing, boating, and birdwatching. Despite its poor condition assessment, the hazard potential is classified as low, with a moderate risk level. The dam's spillway type is uncontrolled, and the maximum discharge capacity is 2100 cubic feet per second, ensuring the safety and stability of the surrounding area. As a regulated structure under the jurisdiction of the Wisconsin Department of Natural Resources, Dells Lake continues to be a valuable asset for both the local community and visitors to enjoy.