The park's wetlands act as a natural filtration system for regional stormwater runoff before it reaches the Huron River watershed.
The boardwalk segments are designed to withstand periodic flooding from the adjacent ponds.
The park is home to a significant population of painted turtles and green frogs often visible from the bridge crossings.
Lillie Park is divided into North and South sections, with the South portion offering the more extensive loop trails.
Lillie Park South is a 128-acre recreation area in Pittsfield Charter Township, characterized by a loop trail system surrounding two primary ponds. The park features an extensive boardwalk system that extends directly over the marshy sections of the water, providing closer access to local wetland wildlife. The main gravel trail measures approximately 1.5 miles in length and is generally level, making it accessible for walkers and joggers. The park serves as a hub for local biodiversity, often frequented by birdwatchers looking for waterfowl and seasonal migratory species. Facilities include a playground, multiple picnic shelters, and dedicated fishing access points along the pond banks. The park is managed by Pittsfield Township rather than the city of Ann Arbor, despite its proximity to the city border. It functions as a primary drainage and stormwater retention site for the surrounding watershed, which influences the water levels throughout the year.
The center of the long wooden boardwalk that spans the eastern pond, capturing the reflection of trees on the water.
Bring binoculars as the boardwalks provide excellent vantage points for spotting herons and egrets.
Check for mud on the trails after heavy rainfall, as parts of the park sit in a floodplain.
Visit during the early morning to see the most active wildlife before the midday crowds arrive.
Attempting to walk the trails immediately after a major storm, as low-lying sections can become submerged.
Leash your dogs at all times and stay on marked trails to protect the fragile wetland vegetation.
