Lake Mason is an 850-acre-plus manmade lake located just 15 minutes east of Wisconsin Dells, shared by the Towns of New Haven in Adams County and the Town of Douglas in Marquette County. The town of Briggsville is located on the eastern shore of the lake. Lake Mason has 3 public access points and boat launches around the lake, one in Briggsville, one on the northern side near Golden Drive and one on the southern side near 1st Drive, not far from the channel connecting to Amey Pond Wildlife Refuge, a waterfowl refuge owned by the Wisconsin Department of Natural Resources with excellent birding opportunities. The lake is fed by two creeks and has a dam on the east end owned by the Town of Douglas.

Lake Mason is an ideal body of water for a variety of waterway activities. Residents and visitors enjoy ice and open water fishing for largemouth bass, musky, panfish, northern pike and catfish on the water. Small boats and pontoons are welcome for slow and no-wake recreation; stumps in key areas of the lake support birds and wildlife. There are also campgrounds, restaurants and options for entertainment located near the shoreline.