Keyesport Beach
Keyesport, Illinois · on Carlyle Lake
Verified · 3 independent sources · top-verified
- WATER
- lake
- ACCESS
- Designated swim area
- FEE
- $5
- SEASON
- May
About Keyesport Beach
Keyesport Beach is a developed, day-use swimming beach within the Keyesport Recreation Area on the northwest shore of Carlyle Lake, a US Army Corps of Engineers reservoir in south-central Illinois. It offers a designated freshwater swim area, a big-water swimming hole for anyone after a lake to swim in around this part of Illinois, with a boat ramp, marina, playground, and picnic facilities alongside.
The beach sits on Carlyle Lake, Illinois' largest man-made lake, near the small village of Keyesport about 50 miles east of St. Louis. The shoreline here is sandy but the lake water itself is described as silty rather than clear, typical of the reservoir's prairie-creek watershed.
Swimming at Keyesport Beach
Swimming takes place in a roped-off designated area of the lake with a gentle sloping bottom, making it approachable for families and children; there are no lifeguards on duty and water depth varies, so visitors should follow posted safety guidance.
How to get to this swimming hole
From I-70, take State Route 127 south for about 10 miles, then head east on Clinton Road for about 4 miles into Keyesport; the recreation area is at 801 Lake Road, Carlyle, IL (beach address given elsewhere as 103 Republican St, Keyesport, IL).
Parking: On-site parking is available at the recreation area/beach.
The walk in
No real hike here. The water is a short walk from where you park. No trail or hike is involved; this is a developed Corps of Engineers day-use beach with adjacent parking.
Plan your visit
Bringing kids
OK with supervision
The roped-off swim area has a gentle sloping, sandy entry described as ideal for kids to splash and play, but there are no lifeguards on duty and water depth becomes variable/unmarked outside the designated area, so young children should be supervised closely.
Parking
Paid, $5 per vehicle daily day-use fee (waived with an America the Beautiful / interagency pass)
On-site parking lot adjoins the beach; a fee station (address 103 Republican St, Keyesport, IL 62253) accepts credit cards.
Restrooms
Yes
Restrooms are on site at the Keyesport Recreation Area beach, near the playground and picnic area (per first-hand account); exact building location not specified in sources found.
Water clarity
Varies with season and flow
Accounts disagree: a firsthand 2022 visitor report describes the water as sandy or silty and 'not spring-clear,' typical of Carlyle Lake's prairie-creek reservoir watershed, while glossier marketing-style descriptions promise 'blue waters' with mirror-like reflections. No candid firsthand reports settle the question, so treat clarity as variable and runoff-dependent rather than reliably clear.
Hours
Officially 8 a.m. to 10 p.m. day-use hours per the Recreation.gov facility listing for Keyesport Recreation Area; one third-party aggregator (beacheverywhere.com) instead lists 'sunrise to sunset,' so confirm locally if visiting at the margins.
On the water
Keyesport Recreation Area itself has its own marina, boat ramp, and courtesy dock (per Recreation.gov), and Carlyle Lake overall is promoted as one of the nation's top ten inland sailing lakes, implying general motorized and non-motorized boating is permitted lake-wide. Swimming is confined to a separate roped-off area away from boat traffic. No specific horsepower, no-wake, or electric-only restriction for this location was found in sources checked this pass.
Backstory
Carlyle Lake was created in 1967 by damming the Kaskaskia River and is managed by the US Army Corps of Engineers' St. Louis District; it is the largest man-made lake in Illinois.
Keyesport Beach: FAQ
Does Keyesport Beach charge a fee?
A day-use vehicle fee (around $5) applies, waived with an America the Beautiful or similar interagency pass.
Is Keyesport Beach kid friendly?
The roped-off swim area has a gentle sloping, sandy entry described as ideal for kids to splash and play, but there are no lifeguards on duty and water depth becomes variable/unmarked outside the designated area, so young children should be supervised closely.
Do I need to hike to reach Keyesport Beach?
No significant hike is required. The swimming area is close to parking and access.
Where do I park for Keyesport Beach?
On-site parking lot adjoins the beach; a fee station (address 103 Republican St, Keyesport, IL 62253) accepts credit cards.
Can I bring a kayak or paddleboard to Keyesport Beach?
Keyesport Recreation Area itself has its own marina, boat ramp, and courtesy dock (per Recreation.gov), and Carlyle Lake overall is promoted as one of the nation's top ten inland sailing lakes, implying general motorized and non-motorized boating is permitted lake-wide. Swimming is confined to a separate roped-off area away from boat traffic. No specific horsepower, no-wake, or electric-only restriction for this location was found in sources checked this pass.
When is the best time to visit Keyesport Beach?
May through September
What are the rules at Keyesport Beach?
Day-use only area, open 8 a.m. to 10 p.m.; swimming is confined to a roped-off designated area; no lifeguards are on duty so swim at your own risk.
What water body is Keyesport Beach on?
Keyesport Beach is on Carlyle Lake, a natural lake verified in USGS hydrography data.
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