Did you know that Coffeen Lake is home to one of the most unique fishing experiences in Illinois? This 1,100-acre power plant cooling lake maintains water temperatures up to 10°C (18°F) warmer than surrounding lakes, creating a habitat where both warm and cool-water fish species thrive year-round. This thermal phenomenon has produced state record catches, including a 7.7 kg (17 lb) striped bass hybrid that shocked the Illinois fishing community when caught in these waters.
Getting There & Planning Your Journey
Coffeen Lake State Park is located in Montgomery County, approximately 8 km (5 miles) east of Coffeen, Illinois. The park’s physical address is 15084 North 4th Avenue, Coffeen, IL 62017.
Closest Airports
- St. Louis Lambert International Airport (STL) – 113 km (70 miles) away
- Abraham Lincoln Capital Airport (SPI) in Springfield – 97 km (60 miles) away
- Central Illinois Regional Airport (BMI) in Bloomington – 145 km (90 miles) away
Best Time to Visit & Weather Tips
Recommended Seasons
Spring (April-May)
Spring offers pleasant temperatures between 15-24°C (59-75°F) and showcases beautiful wildflowers blooming throughout the park. Fishing is excellent during this season as fish become more active after winter.
Fall (September-October)
Fall brings spectacular foliage as the hardwood forest transforms into vibrant shades of red, orange, and gold. Temperatures range from 10-21°C (50-70°F), perfect for hiking and fishing with fewer crowds.
Seasons to Consider Carefully
Summer (June-August)
Summers can be hot and humid with temperatures often exceeding 32°C (90°F). However, this is prime time for fishing, especially early mornings and evenings. The park can be more crowded during weekends and holidays.
Winter (December-February)
Winters are cold with temperatures ranging from -7 to 5°C (20-40°F). The unique warm-water discharge area keeps parts of the lake from freezing, allowing for year-round fishing. Trails may be muddy or icy, and facilities operate on reduced hours.
Important: Check trail conditions before visiting, especially after rain, as some trails in Coffeen Lake State Park may be underwater or muddy during wet periods. The park is closed during the first and second firearm deer hunting seasons in November.
Getting Around Locally
Coffeen Lake State Park is best explored by personal vehicle and on foot via its network of hiking trails. The park covers approximately 1,100 acres (445 hectares), with the lake itself taking up a significant portion of this area.
Transportation Options
- Personal Vehicle: The most convenient way to reach and explore the park, with several parking areas available near fishing spots and trailheads.
- Bicycle: While biking is not permitted on the nature trails, you can cycle to the park and between major areas on park roads.
- Boat: A boat launch is available for exploring the lake. Only electric motors are permitted on most of the lake, with a special area designated for unlimited horsepower.
- No Public Transportation: There is no public transportation directly to the park, so a rental car is recommended if you’re flying in.
Where to Stay
While Coffeen Lake State Park does not offer overnight camping facilities within its boundaries, there are several accommodation options in the surrounding area.
Nearby Accommodations
Hillsboro
The closest town to Coffeen Lake offers several budget-friendly motels and hotels, approximately 16 km (10 miles) from the park. Options include the Red Roof Inn and local bed and breakfasts.
Litchfield
Located about 24 km (15 miles) away, Litchfield provides additional accommodation options, including chain hotels like Hampton Inn, Holiday Inn Express, and Quality Inn.
Nearby Camping
Nearby Ramsey Lake State Recreation Area (32 km/20 miles away) offers camping facilities with electrical hookups, shower buildings, and sanitary dumping stations for those seeking an outdoor overnight experience.
Dining & Local Cuisine
There are no dining facilities within Coffeen Lake State Park, but picnicking is a popular activity. The park features several picnic areas with tables and grills, making it perfect for a meal surrounded by nature.
Nearby Dining Options
Coffeen (8 km/5 miles)
- Local diners serving American comfort food
- Small family-owned cafes with homestyle cooking
- Pizza and sandwich shops
Hillsboro (16 km/10 miles)
- Midwestern cuisine featuring local ingredients
- Barbecue restaurants
- Fast food options
- Mexican restaurants
Picnic Tip: Pack a cooler with sandwiches, snacks, and drinks to enjoy at one of the park’s many picnic areas. The shaded spots near the lake are particularly pleasant for a meal in nature. Remember to pack out all trash to help preserve the park’s natural beauty.
Attractions, Sightseeing & Activities at Coffeen Lake State Park
Fishing
Coffeen Lake is renowned for its exceptional fishing opportunities. The warm water discharge from the adjacent power plant creates a unique ecosystem that supports both warm and cool-water fish species. The lake is stocked with:
- Largemouth bass
- Striped bass hybrids
- Channel catfish
- Bluegill
- Crappie
- Redear sunfish
The lake features three concrete boat ramps and numerous shore fishing access points. Remember that a valid Illinois fishing license is required, and special regulations apply to this lake.
Hiking Trails
Coffeen Lake State Park features several hiking trails that showcase the park’s diverse ecosystems:
Lakeshore Trail
An easy 2.4 km (1.5 mile) trail that follows the shoreline, offering beautiful views of the lake and opportunities for wildlife viewing. Perfect for families and beginners.
Woodland Trail
A moderate 3.2 km (2 mile) trail that winds through mature forest, featuring diverse plant life and bird watching opportunities. Best in spring and fall.
Prairie Loop
A short 1.6 km (1 mile) trail through restored prairie habitat, showcasing native grasses and wildflowers. Spectacular in late summer when wildflowers are in bloom.
Other Activities
Boating
Boating is permitted on Coffeen Lake with some restrictions. The main lake area allows only electric motors, while a designated 300-acre section permits unlimited horsepower. Three boat launches provide easy access to the water.
Wildlife Viewing
The diverse habitats within the park support a wide variety of wildlife. Bring binoculars to spot white-tailed deer, wild turkeys, beavers, muskrats, and numerous bird species including bald eagles during winter months.
Museums, Cultural Spots & Festivals
While Coffeen Lake State Park itself doesn’t house museums or cultural attractions, the surrounding area offers several points of interest that can complement your park visit.
Nearby Cultural Attractions
Historic Hillsboro
The nearby town of Hillsboro features a charming historic downtown district with buildings dating back to the mid-1800s. The Montgomery County Historic Courthouse, built in 1873, is particularly noteworthy for its impressive architecture.
Coal Mining Museum
Located in Gillespie, about 24 km (15 miles) from the park, this small museum documents the region’s rich coal mining history with artifacts, photographs, and personal stories from former miners.
Old Settlers’ Days
This annual festival in Hillsboro (typically held in August) celebrates the area’s pioneer heritage with historical reenactments, craft demonstrations, live music, and local food. A perfect addition to your park visit if your timing aligns.
Seasonal Events
Throughout the year, several events take place in and around Coffeen Lake State Park:
- Spring Fishing Derby (April): An annual fishing competition with prizes for various categories.
- Summer Nature Programs (June-August): Ranger-led educational programs about local wildlife and ecosystems.
- Fall Colors Weekend (October): Guided hikes showcasing the spectacular autumn foliage.
- Eagle Watching Events (January-February): Organized viewing opportunities when bald eagles winter in the area.
Sports, Nature & Outdoor Experiences
Birdwatching
Coffeen Lake State Park is a haven for birdwatchers, with over 80 species documented within its boundaries. The diverse habitats of lake, woodland, and prairie attract a wide variety of birds:
- Waterfowl, including ducks, geese, and herons
- Bald eagles (particularly during winter months)
- Osprey and other raptors
- Songbirds, especially during spring and fall migrations
- Shorebirds along the lake’s edge
The best birdwatching spots include the observation platform near the main boat launch and the quiet coves along the eastern shoreline.
Photography
The diverse landscapes and wildlife make Coffeen Lake a photographer’s paradise. The best photography opportunities include:
- Sunrise over the lake from the eastern shore
- Wildflowers in the prairie areas during late spring and summer
- Fall foliage reflecting in the lake’s calm waters
- Wildlife, especially waterfowl and deer
Hunting
Limited hunting is permitted in designated areas of Coffeen Lake State Park during specific seasons. The park offers opportunities for:
- Deer hunting (archery only)
- Turkey hunting (spring season)
- Dove hunting (early fall)
- Waterfowl hunting in designated blinds
All hunters must have valid Illinois hunting licenses and appropriate permits. Check with the park office for current regulations and designated hunting areas.
Safety, Etiquette & Local Customs
Park Rules and Etiquette
- Stay on designated trails to protect the natural ecosystem and prevent erosion
- Pets must be leashed at all times and are not permitted in some areas of the park
- No swimming is allowed in Coffeen Lake due to safety concerns
- Pack out all trash to help preserve the park’s natural beauty
- Respect fishing regulations, including size and creel limits specific to this lake
- No collecting plants, animals, or natural objects
Safety Tips
- Bring insect repellent, especially during warm months (ticks and mosquitoes are common)
- Wear appropriate footwear for hiking on potentially muddy or uneven trails
- Carry water, especially during summer months
- Check weather forecasts before boating, as conditions can change quickly
- Be aware of hunting seasons and wear bright colors during these times if hiking
- The park is open from sunrise to sunset daily
Important: Cell phone reception can be spotty within the park. Let someone know your hiking or boating plans if you’re exploring the more remote areas. During summer, be cautious of high temperatures and humidity – stay hydrated and take breaks in shaded areas.
Visitor Comments About Coffeen Lake State Park
“The fishing at Coffeen Lake is truly exceptional. I’ve been to many lakes across the Midwest, but the variety and size of fish here surprised me. The warm water from the power plant creates a unique ecosystem that supports fish year-round. I caught several large hybrid striped bass during my visit, including one that was nearly 5 kg (11 lbs)!”
“We spent a day hiking the trails and picnicking by the lake. The Woodland Trail was our favorite – diverse ecosystems and beautiful views of the lake through the trees. We saw several deer and a wide variety of birds. The picnic areas are well-maintained and offer nice shade. A hidden gem in central Illinois that doesn’t get the attention it deserves.”
“As an avid birdwatcher, I was impressed by the diversity at Coffeen Lake. During my spring visit, I spotted over 30 species in just one day, including several migratory warblers and waterfowl. The observation platform near the main boat launch provides excellent views across the lake. Don’t forget your binoculars and a good field guide!”
Practical Travel Tips
What to Bring
- Comfortable hiking shoes with good traction
- Insect repellent (especially during warm months)
- Binoculars for birdwatching and wildlife viewing
- Camera to capture the scenic views
- Water bottle and snacks
- Fishing gear if you plan to fish
- Sunscreen and hat for sun protection
- Light rain jacket (weather can change quickly)
Planning Your Visit
- Allow at least 4-5 hours to explore the trails and fishing spots
- Weekdays are less crowded than weekends
- Spring and fall offer the most pleasant weather and scenic views
- No entrance fee is required to visit the park
- Fishing licenses are required and can be purchased online or at local sporting goods stores
- Contact the park at (217) 537-3351 for current conditions
- Download a park map before your visit as cell service may be limited
Park Hours: Coffeen Lake State Park is open daily from sunrise to sunset. The park office has more limited hours, typically 8:00 AM to 4:00 PM Monday through Friday.
Experience Illinois’ Hidden Fishing Paradise
Coffeen Lake State Park offers a unique outdoor experience that combines exceptional fishing opportunities with peaceful natural beauty. Whether you’re casting a line for record-breaking hybrid striped bass, hiking through diverse ecosystems, or simply enjoying a picnic with lake views, this hidden gem in central Illinois provides a welcome escape from the everyday.
The park’s distinctive warm-water ecosystem creates a year-round haven for both fish and the anglers who seek them, while the surrounding woodlands and prairie areas support abundant wildlife and offer scenic trails for nature lovers. Though it may not have the name recognition of some of Illinois’ larger state parks, Coffeen Lake rewards visitors with uncrowded spaces and authentic outdoor experiences.
Plan your visit to Coffeen Lake State Park and discover why this power plant cooling lake has become a treasured destination for fishing enthusiasts and nature lovers alike. In every season, this unique park offers a fresh perspective on Illinois’ natural heritage and outdoor recreation opportunities.
The above is subject to change.
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