Grosse, also known as Murphy Creek, is a private water resource located in Marinette, Wisconsin, designed by the USDA NRCS. This dam, completed in 1970, serves primarily for recreational purposes, with a modest height of 18 feet and a storage capacity of 80 acre-feet. The dam spans 480 feet and has a maximum discharge rate of 240 cubic feet per second. While it has a low hazard potential and fair condition assessment, it is regulated by the Wisconsin Department of Natural Resources, with regular inspections and enforcement measures in place.

Situated in the Detroit District, Grosse offers a serene escape for water and climate enthusiasts in the area. With its uncontrolled spillway type and relatively small drainage area of 2 square miles, the dam provides a peaceful setting for outdoor activities. The dam has a moderate risk assessment rating, indicating a level of caution, but overall, it remains a safe and well-maintained water resource for the community. The last inspection in June 2018 showed no major concerns, and the dam continues to be monitored to ensure its continued integrity.

Despite its private ownership, Grosse contributes to the local environment and economy by offering recreational opportunities in the heart of Marinette, Wisconsin. With its picturesque location and moderate risk profile, this dam serves as a valuable asset to the region, providing a source of enjoyment for residents and visitors alike. As climate change and water resource management become increasingly important topics, Grosse stands as a testament to the importance of sustainable and well-regulated water infrastructure in maintaining a healthy and vibrant community.