The Elm Marsh Watershed (HUC 09020107) covers an area of approximately 223 square miles in north-central Wisconsin. The area is characterized by a cold, humid climate with an average annual snowfall of 58 inches. Snowmelt is an important source of surface water, which flows into the Wolf River and ultimately into Lake Michigan. The watershed is home to several small lakes and wetlands, as well as the Reservoir Pond, which is used for recreational activities. Water quality in the watershed has been impacted by agricultural activities and urbanization. The primary pollutants of concern include nutrients, sediment, and bacteria. Efforts are underway to reduce these pollutants and improve water quality. Overall, the Elm Marsh Watershed is an important ecological and recreational resource for the region. Ongoing monitoring and management efforts will be needed to ensure its long-term health and sustainability.