Lake Carlos State Park
Carlos, Minnesota · on Lake Carlos
Verified · 3 independent sources
- WATER
- lake
- ACCESS
- Designated swim area
- FEE
- No fee found
- SEASON
- Best in summer
About Lake Carlos State Park
Lake Carlos State Park is a Minnesota DNR state park about 10 miles north of Alexandria, Douglas County, built around Lake Carlos, a large (2,605-acre), deep, spring-fed lake to swim in. The park's swimming hole is a designated sandy beach on the lake that has been a developed recreation area since the park's 1937 founding, with WPA-built structures including a historic bath house still standing.
The park sits on the shore of Lake Carlos, a clear, spring-fed lake reaching depths of up to 163 feet (average ~50 feet) with nearly 13 miles of shoreline, within a landscape of prairie potholes, old-growth maple-basswood forest, and wetlands connected by about 17 miles of hiking trail (Prairie Pothole Trail, Maple-Basswood Interpretive Trail, Wetland Overlook Trail).
Swimming at Lake Carlos State Park
Swimming is at a designated, unsupervised (no lifeguard) sandy beach that slopes gently into shallow water before dropping off into much deeper, clear lake water further out, making the shallow shelf suitable for families with young children while the open lake suits stronger swimmers. The beach faces southeast, so DNR-adjacent guidance notes it gets morning sun and is warmest from late morning into early afternoon.
How to get to this swimming hole
The park and its swimming beach are located within Lake Carlos State Park, about 10 miles north of Alexandria, Minnesota, and about 1.7 miles from the town of Carlos; the beach has on-site parking and picnic tables adjacent to it.
Parking: On-site parking directly at the swimming beach area.
The hike in
The swimming beach is a drive-up destination with adjacent on-site parking, no hike is needed to reach it. The park separately has about 17 miles of hiking trails (Prairie Pothole Trail, Maple-Basswood Interpretive Trail, Wetland Overlook Trail) through prairie, old-growth forest, and wetland habitat, but these are optional recreational trails unrelated to reaching the swim spot.
Walk from the parking lot to the beach is short and level (day-use area is built right up to the sand).
Plan your visit
Bringing kids
OK with supervision
Beach slopes gently into shallow water, good for young kids to wade, but the swimming area is unsupervised (no lifeguard on duty) and the lake drops off from the shallow shelf to depths exceeding 150 ft not far from shore, so adults should keep close watch once kids move past the shallow shelf.
Parking
Paid, $7/day or $35/year Minnesota state park vehicle permit (covers all 75 MN state parks)
On-site parking lot directly at the swimming beach/day-use area; the permit is the standard statewide MN state park vehicle fee, not a beach-specific charge.
Restrooms
Yes
Restrooms/changing area are on-site near the beach/day-use area (per prior facility listing); the campground area has flush toilets and showers, and the group camp area has vault toilets. No source confirms a dedicated flush-toilet building at the beach itself versus the historic WPA-era bath house serving that role.
Water clarity
Clear
Minnesota DNR's own park description calls Lake Carlos 'clear and deep.' The lake is spring-fed, reaches up to 163 ft deep (average ~50 ft), which is consistent with clear water typical of deep spring-fed Minnesota lakes, though no Secchi-disk transparency reading was located to quantify this.
On the water
The park has a concrete boat ramp flanked by docks, and the DNR lists boating alongside swimming, fishing, camping, hiking, and horseback riding as permitted park activities. No source found specifies craft-type restrictions (e.g., no-wake zones, electric-motor-only areas, or horsepower limits) for Lake Carlos specifically, so treat any such restriction as unconfirmed.
Backstory
The park was established in 1937 as a public recreational facility in one of Minnesota's historic summer-resort areas; several structures date to the Works Progress Administration era, including a mess hall and crafts building in the group camp area, a water tower, a sanitation building, and a bath house.
Lake Carlos State Park: FAQ
Is Lake Carlos State Park kid friendly?
Beach slopes gently into shallow water, good for young kids to wade, but the swimming area is unsupervised (no lifeguard on duty) and the lake drops off from the shallow shelf to depths exceeding 150 ft not far from shore, so adults should keep close watch once kids move past the shallow shelf.
Do I need to hike to reach Lake Carlos State Park?
No significant hike is required. The swimming area is close to parking and access.
Where do I park for Lake Carlos State Park?
On-site parking lot directly at the swimming beach/day-use area; the permit is the standard statewide MN state park vehicle fee, not a beach-specific charge.
Can I bring a kayak or paddleboard to Lake Carlos State Park?
The park has a concrete boat ramp flanked by docks, and the DNR lists boating alongside swimming, fishing, camping, hiking, and horseback riding as permitted park activities. No source found specifies craft-type restrictions (e.g., no-wake zones, electric-motor-only areas, or horsepower limits) for Lake Carlos specifically, so treat any such restriction as unconfirmed.
When is the best time to visit Lake Carlos State Park?
Summer (June-August) is peak swimming season with warm beach and lake water and full weekend campgrounds; fall (September-October) sees much smaller crowds after Labor Day but cooler water.
What are the rules at Lake Carlos State Park?
Swimming area is unsupervised with no lifeguard on duty.
What water body is Lake Carlos State Park on?
Lake Carlos State Park is on Lake Carlos, a natural lake verified in USGS hydrography data.
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