Alonzo H. Garcelon Wildlife Management Area (Mud Mill Flowage) spans approximately 2,001 acres across Augusta, Windsor, Vassalboro, and China in Kennebec County, offering canoeing access and hiking trails through wetland areas.

Access is available via gates at either end of Mud Mill Road (off Route 17 or Route 105), with parking available at both locations.

The area features easy-to-follow but unblazed trails through mossy terrain, though some sections can be wet due to beaver activity; visitors should be prepared for muddy conditions in certain areas.