Lake Sammamish State Park
Its 1 site is reservable through Washington State Parks reservations, and it is open from May 19 to Labor Day. Lake Sammamish State Park is a State Park campground near Issaquah, Washington.
Reservable: Washington State Parks reservations
- Managed by
- State Park
- Hookups
- None
Lake Sammamish State Park sits inside Lake Sammamish State Park. Its hours, entrance fee, and boundary are on publiclandsdb.com.
Getting a site
- Managed by
- State Park
- Reservations
- Washington State Parks reservations Book a site
- Fee
- Fee unknown, see agency
- Entrance fee
- None for campers in the park they stay in; Discover Pass $10/day or $45/year for day visits
- Booking window
- Up to nine months before the first night; same-day campsite bookings until 2 p.m.
- Cancellations
- $8 online or $10 by phone, plus 5% to 50% of cancelled nights depending on how long the reservation was held; no-shows get no refund
Source: parks.wa.gov, accessed 2026-09-29
Sites and hookups
- Total sites
- 1
- Group sites
- 1
- Hookups
- None
- ✓ Toilets
- ✓ Potable water
- ✓ Dump station
- ✓ Fire rings
- ✓ Pets allowed
On site: Toilets, potable water, dump station, fire rings, and pets allowed.
Source: parks.wa.gov, accessed 2026-09-29
Rules
- Stay limit
- 10 nights in one park within a 30-day period; 90 nights per calendar year in all state parks
- Quiet hours
- 10 p.m. to 6:30 a.m.
- Generators
- Allowed outside quiet hours
- Pets
- Allowed
Source: parks.wa.gov, accessed 2026-09-29
Access and cell service
- Elevation
- 37 ft
Cell coverage by carrier (FCC map)
- AT&T
- 4G LTE and 5G (7/1 Mbps)
- T-Mobile
- 4G LTE and 5G (35/3 Mbps)
- Verizon
- 4G LTE and 5G (35/3 Mbps)
Source: FCC Broadband Data Collection, data as of December 31, 2025
Outdoor coverage each carrier reports to the FCC at this campground's map point, and the nearest mapped coverage within about half a mile. The FCC map only includes 4G LTE at 5/1 Mbps or better and 5G; a weaker signal, a text, or an emergency call may still get through, but don't count on it. These are carrier predictions, not measurements, and can be wrong either way: real service in canyons, under trees, and inside a tent or vehicle is often weaker. 5G speeds are the FCC's 7/1 and 35/3 Mbps tiers. This product uses the FCC Data API but is not endorsed or certified by the FCC.
47.5569, -122.0632 in King. Open in OpenStreetMap. Map © OpenStreetMap contributors.
Season and winter services
Lake Sammamish State Park is open from May 19 to Labor Day , at 37 ft.
Source: epqs.nationalmap.gov, accessed 2026-09-29
Common questions
Do you need a reservation at Lake Sammamish State Park?
Is there a separate entrance fee at Lake Sammamish State Park?
What happens if I cancel or don't show up at Lake Sammamish State Park?
How many campsites does Lake Sammamish State Park have?
Does Lake Sammamish State Park have RV hookups?
Is there drinking water at Lake Sammamish State Park?
Are dogs allowed at Lake Sammamish State Park?
When is Lake Sammamish State Park open?
How long can you stay at Lake Sammamish State Park?
Are generators allowed at Lake Sammamish State Park?
Is there cell service at Lake Sammamish State Park?
Who manages Lake Sammamish State Park?
Around Lake Sammamish State Park
The nearest lake with a fishing page is Pine Lake, whose mapped center point is 2.3 miles away in a straight line. Stocking record and species: Pine Lake fishing on fishypedia.com.
Lake Tapps's mapped center point is 23 miles from Lake Sammamish State Park in a straight line. Current water level: Lake Tapps water level on reservoirfinder.com.
Other lakes within 15 miles: Beaver Lake - Sammamish fishing (3.7 miles) , Lake Boren fishing (5 miles) , Lake Desire fishing (8.2 miles) , Lake Alice fishing (8.4 miles) , and Shady Lake fishing (9 miles) , each with its stocking record on fishypedia.com.
Waterfalls and swimming nearby
Nearest to Lake Sammamish State Park, in straight-line miles: Snoqualmie Falls (waterfall, 11 miles), Green River Gorge (swimming hole, 19 miles), and Wallace Falls (waterfall, 29 miles). Each has its own page on swimholesmap.com.
More campgrounds: camping near Issaquah and campgrounds in King.
Sources
- parks.wa.gov (all fields), accessed 2026-09-29
- parks.wa.gov (reservationSystem), accessed 2026-09-29
- parks.wa.gov (stayLimit, quietHours, generatorsAllowed, entranceFee), accessed 2026-09-29
- parks.wa.gov (reservationWindow), accessed 2026-09-29
- parks.wa.gov (cancellationPolicy), accessed 2026-09-29
- epqs.nationalmap.gov (elevationFt), accessed 2026-09-29
- broadbandmap.fcc.gov (cellCoverage), accessed 2026-09-27
Photo credits
- Photo 1: Mggkitsap, CC BY 3.0
- Photo 2: Narasimhan Govindarajan, CC0