Grayhaven State Harbor
Detroit, Michigan · Campsite openings, cancellations & sold-out date alerts
Weekend availability
Live from Michigan State Parks · checked Sep 8, 1:06 AM PTSold out 5 of the next 5 weekends — exactly when cancellation alerts earn their keep.
- Fri, Sep 18Sold out
- Fri, Sep 25Sold out
- Fri, Oct 2Sold out
- Fri, Oct 9Sold out
- Fri, Oct 16Sold out
Sold out for your dates? We'll tell you the second a site opens.
Cancellations at Grayhaven State Harbor get rebooked in minutes. We check Michigan State Parks around the clock and alert you before the crowd refreshes the page.
Not ready to subscribe? Get a free weekend heads-up.
We'll email you if Grayhaven State Harbor opens up for a weekend you pick. No account needed.
Park type
Lakes & Rivers
Michigan State Parks system
Online booking
Available on Michigan State Parks
Official state reservation system
Alert coverage
Checked around the clock
Openings, cancellations & new dates
Getting a campsite at Grayhaven State Harbor
How do I get a campsite at Grayhaven State Harbor when it's sold out?
Cancellations happen constantly — the trick is being first to know. Set an alert for your dates and we'll watch Grayhaven State Harbor on Michigan State Parks around the clock, then notify you the moment a site opens. Alerts run on a Pro subscription ($9.99/mo, cancel anytime).
When do campsites usually open up at Grayhaven State Harbor?
Whenever someone cancels. Most reservation systems refund less the closer you get to arrival, so cancellations cluster in the days before a stay — but the openings themselves are unpredictable, which is exactly why watching for them beats refreshing the page.
Where do I book a campsite at Grayhaven State Harbor?
Reservations for Grayhaven State Harbor are made on Michigan State Parks, the official booking system for Michigan State Parks. GetParkAlerts is independent — we tell you when a site opens; you book it directly on the official site.