Lake Sammamish State Park

Issaquah, Washington · Campsite openings, cancellations & sold-out date alerts

Lakes & RiversWatched around the clock

Weekend availability

Live from Washington State Parks · checked Sep 14, 5:26 AM PT

Sold out 6 of the next 6 weekends — exactly when cancellation alerts earn their keep.

  • Fri, Sep 18
    Sold out
  • Fri, Sep 25
    Sold out
  • Fri, Oct 2
    Sold out
  • Fri, Oct 9
    Sold out
  • Fri, Oct 16
    Sold out
  • Fri, Oct 23
    Sold out
Alert me when a sold-out weekend opens

Sold out for your dates? We'll tell you the second a site opens.

Cancellations at Lake Sammamish State Park get rebooked in minutes. We check Washington State Parks around the clock and alert you before the crowd refreshes the page.

Set an alert for Issaquah$9.99/mo — why we charge

Not ready to subscribe? Get a free weekend heads-up.

We'll email you if Lake Sammamish State Park opens up for a weekend you pick. No account needed.

Park type

Lakes & Rivers

Washington State Parks system

Online booking

Available on Washington State Parks

Official state reservation system

Alert coverage

Checked around the clock

Openings, cancellations & new dates

Where Lake Sammamish State Park is

Issaquah, WA 98027

47.5529, -122.0675

Get directions

Getting a campsite at Lake Sammamish State Park

How do I get a campsite at Lake Sammamish State Park 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 Lake Sammamish State Park on Washington 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 Lake Sammamish State Park?

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 Lake Sammamish State Park?

Reservations for Lake Sammamish State Park are made on Washington State Parks, the official booking system for Washington State Parks. GetParkAlerts is independent — we tell you when a site opens; you book it directly on the official site.

Parks near Lake Sammamish State Park

Flexible on where you camp? Watch a few of these too — more parks, better odds.

All Washington lakes & rivers →Browse all Washington state parks →All Washington camping — parks, federal & military →Open this weekend →Sold out this weekend →Washington closures & advisories →See every Washington park on the map →