Sauk Trail Reservoir
Location
Sauk Trail Reservoir is located on 80th Avenue, south of Sauk Trail, in Frankfort. Street parking is available on 80th Avenue.
Hours
8 a.m.-Sunset
Trails
Sauk Trail Bike Path
Phone
815-727-8700
Spanning 245 acres, Sauk Trail Reservoir in Frankfort protects wetland habitat along a portion of Hickory Creek while serving as a regional stormwater management facility.
The site includes a dry reservoir and dam designed to hold water during flood events. This dual purpose supports both public safety and the surrounding ecosystem.
Exploring the preserve
Sauk Trail Reservoir features 0.93 mile of paved trail, ideal for biking, hiking, running, in-line skating, cross-country skiing and snowshoeing. Because the trail is constructed on a flood control structure, visitors are required to stay on the trail, and the preserve may be closed during times of flooding.
Flora and fauna
Sauk Trail Reservoir protects wetland habitat that supports a variety of plant and animal life.
Ongoing management — including prescribed burning — helps maintain and enhance these natural resources.
Preserve history
Sauk Trail Reservoir was acquired between 1976 and 1978 in partnership with the State Division of Waterways for the construction and operation of a stormwater management facility.
The preserve is part of the Hickory Creek preservation system, which protects nearly 1,800 acres.
Upcoming events
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Lake Renwick Migratory Bird Viewing
See the dazzling spectacle of nesting herons, egrets and cormorants at our weekly bird viewings at Lake Renwick Heron Rookery Nature Preserve.
Volunteer Morning: Vermont Cemetery Preserve
Get some fresh air and exercise while helping to make a difference in your community by attending one or more of the Forest Preserve’s volunteer mornings.
It’s Giving … Illinois
Visit Plum Creek Nature Center for an interactive hike to learn about our state icons.
Latest headlines
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Forest Preserve to begin Districtwide asphalt assessment
Some preserve closures or delayed openings will be required.
Meteor shower activity really heats up in July
Shooting star activity will be heating up in July, with three meteor showers kicking off. A comet will also be visible in the night sky.
Half-price 2026 dog park permits are available for purchase
The permits are good through Dec. 31.
Frequently asked questions
There are many opportunities to volunteer with us. Visit the volunteer information page for more information.
Electric-assist bicycles are allowed within the preserves as long as they meet certain requirements. The bikes must:
- Be low speed (an electric motor of less than 750 watts).
- Have a maximum speed of less than 20 miles per hour.
- Have functional pedals.
- Have a rider who is 16 years of age or older.
Per the District's General Use Ordinance, persons riding a bicycle must conform to federal and state bicycle laws.
Call 911 in an emergency. Non-emergency safety concerns should be directed to the Laraway Communications Center dispatch at 815-727-6191 (option 9) to have a Forest Preserve District officer dispatched. Non-emergency and past concerns can also be reported to the District's police department by calling 815-727-8700 or through the online form.
Visit the Frequently Asked Questions: Concealed Carry page for information about firearms in the District's forest preserves and visitor centers.