WhoaZone at Heron Beach
Holly, Michigan · on Wildwood Lake
Verified · 2 independent sources
- WATER
- lake
- ACCESS
- Designated swim area
- FEE
- $99
- SEASON
- Historically Memorial Day weekend through Labor Day, matching both the state park swim season and WhoaZone's operating season; the beach, swim area, and WhoaZone are closed for the entire 2026 season (through October) due to a Heron Dam reconstruction project that is lowering lake levels about 4 feet.
About WhoaZone at Heron Beach
Heron Beach is the designated public swimming beach on Heron Lake inside Holly Recreation Area, an 8,000-plus acre Michigan DNR state recreation area between Pontiac and Flint, and one of the area's best-developed swimming holes. WhoaZone is a paid, seasonal inflatable Wibit aqua park (obstacle courses, slides, floating trampoline) that operates on the water at Heron Beach in addition to the free-swim buoyed beach area. For the 2026 season the beach, swim area, and WhoaZone are all closed due to a Heron Dam reconstruction project, so this is not a lake to swim in until that work wraps up.
Heron Lake is one of four named lakes (Heron, Valley, Wildwood, Crotched) inside the roughly 8,000-acre Holly Recreation Area, a Michigan DNR property in northern Oakland County less than an hour from Detroit. The Heron Lake day-use area has an accessible beach house, playground on rubberized surfacing, and an accessible fishing pier, per the DNR's park page.
Swimming at WhoaZone at Heron Beach
Heron Beach is an official state-park swimming beach with a buoyed swim area suited to general family swimming, plus the paid WhoaZone inflatable obstacle/aqua park (Action Tower, Peakz challenge area, floating trampoline, slides, a dedicated KidsZone) floating on the same swim area for those who purchase separate admission.
How to get to this swimming hole
Holly Recreation Area's headquarters is at 8100 Grange Hall Road, Holly, MI 48442; the WhoaZone/Heron Beach day-use area is reached via the park's Heron Lake access off McGinnis Road (WhoaZone's own listed address is 5005 McGinnis Rd, Holly, MI 48442), per official park and WhoaZone pages.
The walk in
No real hike here. The water is a short walk from where you park. This is a drive-up beach reached directly from the day-use parking lot -- no hike is needed to reach the swimming area. For visitors who want to combine a hike with the visit, a boating-guide source describes a roughly 4-mile loop trail (dog-friendly) starting at the Heron Lake boat launch that runs across/near Heron Beach and loops around the adjacent Valley and Wildwood lakes, but this is a separate recreational option, not a required approach to the swim spot.
Plan your visit
Bringing kids
Good for kids
Heron Beach is a designated, buoyed state-park swim beach with a gently sloped sand shoreline, an accessible beach house, and a large kids' play structure at the day-use area (per Michigan DNR and a boating-guide review); lifeguard presence was not confirmed in any source found, so supervise kids as at a typical unguarded state-park beach.
Parking
Paid, Michigan Recreation Passport required for vehicle entry (~$14-$16/year for residents as of Jan 2026, or a one-time day pass at the gate); no separate beach parking fee found beyond the Passport
Day-use lot serves the Heron Beach/beach-house area off McGinnis Road; a separate paved boat-launch lot nearby (Heron Lake Boat Launch) has about 20 single-lane trailer parking spots.
Restrooms
Yes
Restrooms are inside the accessible beach house in the Heron Lake day-use area, per the Michigan DNR park page.
Water clarity
Clear
One visitor review found in search results said they were glad to see 'how clean the lake was' with many fish visible; this is a single data point and no broader clarity/algae-advisory data specific to Heron Lake was found, so treat as indicative rather than definitive.
Hours
Holly Recreation Area day-use area is listed as open 8 AM-10 PM daily (per unofficial listings citing the park; not confirmed on an official page). WhoaZone's on-water rental/aqua-park hours in a normal season are Thu-Fri 4-7 PM and Sat-Sun 11 AM-7:30 PM, closed Mon-Wed; for the 2026 season the beach, swim area, and WhoaZone are closed entirely through October for the Heron Dam reconstruction project (per prior research).
On the water
The Heron Lake Boat Launch (a separate paved ramp with about 20 trailer spots) accommodates motorboats and large boats as well as kayaks/canoes, per a boat-launch directory. No horsepower limit or no-wake rule specific to Heron Lake was confirmed in any source searched, despite looking for Oakland County watercraft-control regulations, so that restriction field is left null rather than guessed. On-water rentals at the beach itself (via WhoaZone/DNR beach house) are limited to human-powered craft: kayaks, canoes, SUPs, and paddleboats.
Rentals nearby
Kayak, canoe, stand-up paddleboard, and paddleboat rentals at the on-site boat house, in addition to WhoaZone's paid inflatable aqua park when operating
Heron Beach boat house, 5005 McGinnis Rd, Holly, MI 48442 (within Holly Recreation Area) · In a normal season: Thu-Fri 4-7 PM, Sat-Sun 11 AM-7:30 PM, closed Mon-Wed (per a business listing); closed for the entire 2026 season due to the Heron Dam reconstruction project, with WhoaZone's operations relocated to Bald Mountain Recreation Area for 2026
What regulars say
One visitor described the lake at Heron Beach as visibly clean with many fish present. Beyond that, no direct visitor commentary on Heron Beach crowd levels or water clarity was located.
Backstory
The Heron Dam is a 1,025-foot earthen structure built in 1969 that is now undergoing a roughly $5.7 million reconstruction (partly federally funded) because it is reaching the end of its design life, which is the reason for the 2026 lake drawdown and beach/WhoaZone closure.
WhoaZone at Heron Beach: FAQ
Does WhoaZone at Heron Beach charge a fee?
A Michigan Recreation Passport (state park vehicle pass) is required for park entry. WhoaZone inflatable aqua park access is a separate paid admission; at the 2026 relocated Bald Mountain location, pricing was $99 for a weekday-only membership or $149 for a daily-access membership (Holly-specific per-visit pricing was not found on the fetched pages).
Is WhoaZone at Heron Beach kid friendly?
Heron Beach is a designated, buoyed state-park swim beach with a gently sloped sand shoreline, an accessible beach house, and a large kids' play structure at the day-use area (per Michigan DNR and a boating-guide review); lifeguard presence was not confirmed in any source found, so supervise kids as at a typical unguarded state-park beach.
Do I need to hike to reach WhoaZone at Heron Beach?
No significant hike is required. The swimming area is close to parking and access.
Where do I park for WhoaZone at Heron Beach?
Day-use lot serves the Heron Beach/beach-house area off McGinnis Road; a separate paved boat-launch lot nearby (Heron Lake Boat Launch) has about 20 single-lane trailer parking spots.
Can I bring a kayak or paddleboard to WhoaZone at Heron Beach?
The Heron Lake Boat Launch (a separate paved ramp with about 20 trailer spots) accommodates motorboats and large boats as well as kayaks/canoes, per a boat-launch directory. No horsepower limit or no-wake rule specific to Heron Lake was confirmed in any source searched, despite looking for Oakland County watercraft-control regulations, so that restriction field is left null rather than guessed. On-water rentals at the beach itself (via WhoaZone/DNR beach house) are limited to human-powered craft: kayaks, canoes, SUPs, and paddleboats.
When is the best time to visit WhoaZone at Heron Beach?
Historically Memorial Day weekend through Labor Day, matching both the state park swim season and WhoaZone's operating season; the beach, swim area, and WhoaZone are closed for the entire 2026 season (through October) due to a Heron Dam reconstruction project that is lowering lake levels about 4 feet.
What are the rules at WhoaZone at Heron Beach?
Recreation Passport required for vehicle entry; alcohol is prohibited in day-use areas south of McGinnis Road from April 1 through Labor Day unless authorized by permit; pets must be leashed within 6 feet, per the Michigan DNR park page.
What water body is WhoaZone at Heron Beach on?
WhoaZone at Heron Beach is on Wildwood Lake, a natural lake verified in USGS hydrography data.
More swimming holes near Holly
★ Top verifiedDeer Lake Beach
Village of Clarkston, Michiganlake
🛶🏄🚤
★ Top verifiedStony Lake Park
Oxford, Michiganlake
🚤
★ Top verifiedTeeple Lake Beach
White Lake, Michiganlake
🛶
Linden County Park
Linden, Michiganlake
🛶🏄
Clover Beach
Linden, Michiganlake
🛶🚤
Waldenwoods beach and water activities
Howell, Michiganlake
🛶🏄