Alta Lake State Park
Pateros, Washington · on Alta Lake · Alta Lake
Verified · 4 independent sources
- WATER
- lake
- ACCESS
- Designated swim area
- FEE
- $45
- SEASON
- Best in summer
About Alta Lake State Park
Alta Lake State Park is a 181-acre Washington State Parks property on Alta Lake, a 2-mile-long, 220-acre glacially formed lake about 2 miles southwest of Pateros in Okanogan County. The park has an official, roped-off swimming beach within its day-use area, a designated swimming hole rather than an informal or hidden one, and it gives visitors near Pateros a straightforward lake to swim in.
The lake sits in a valley flanked by towering glacially-carved stone cliffs rising roughly 1,000 feet above the valley floor. Alta Lake is a closed hydrological system with no primary surface inflow or outflow, giving it calm, generally clear water. The surrounding terrain is dry, high-desert Okanogan Country landscape typical of the Methow Valley/Columbia River region, and the park was damaged by the 2014 Carlton Complex Fire before reopening after about five weeks of recovery work.
Swimming at Alta Lake State Park
Swimming takes place at a large sandy beach in the day-use area that slopes gently into a roped-off designated swim zone, separated from the boating/dock area so swimmers aren't mixed with watercraft traffic. This makes it well suited to families and casual swimmers rather than an adventurous or remote swim; water skiing, windsurfing, and personal watercraft use elsewhere on the lake are restricted to 9:00 a.m.-6:00 p.m. by local ordinance.
How to get to this swimming hole
The park is located at 1B Otto Road, Pateros, WA 98846, about 2 miles southwest of downtown Pateros; it is reached via Alta Lake Road off SR 153/US 97 near Pateros.
Parking: Day-use parking is limited to designated stalls in the day-use area; no roadside parking is permitted, so the park manages crowding by capping the number of cars that can park.
The walk in
No real hike here. The water is a short walk from where you park. No trail or hike is needed to reach the swimming beach; it sits directly off the day-use parking lot.
Plan your visit
Bringing kids
OK with supervision
The designated swim zone is a large sandy beach that slopes gently into the water and is roped off, separating swimmers from the boat launch/dock area, which local news describes as drawing families. No lifeguard presence was confirmed one way or the other in any source found, so supervise kids closely despite the gentle, protected setup.
Parking
Paid, Discover Pass required ($10/day or $45/year); no separate parking fee stated beyond the pass
Day-use parking is limited to a fixed number of designated stalls in the day-use area; no roadside parking is permitted, so the park manages crowding by capping how many vehicles can park at once (per 2020 local news coverage).
Restrooms
Yes
Accessible restrooms and showers are provided in the day-use area (official state park page); a 2020 local news account also describes 'well-maintained restrooms' near the beach.
Water clarity
Mostly clear
No Secchi-depth or water-quality monitoring data was found for Alta Lake. The only descriptive account located, a 2020 Methow Valley News feature, refers to 'cool waters' and 'sunlit blue waters,' consistent with the lake's closed (no inflow/outflow) hydrology noted in the prior dossier, but this is a journalistic description, not a measured clarity rating.
Hours
Summer (April-October): 6:30 a.m.-10:00 p.m. daily. Park is closed November 1-March 30.
On the water
Restrictions: Waterskiing and personal watercraft (jet ski) use are restricted to 9:00 a.m.-6:00 p.m. daily under local ordinance. A $7/day watercraft launch fee applies. No horsepower limit or no-wake zone was mentioned in any source found.
The official state park page lists boating, kayaking, paddleboarding, and water skiing as available summer activities, with a separate boat launch and dock kept apart from the roped-off swim zone.
Rentals nearby
Concessions on the Lake (Alta Lake State Park on-site concessionaire)
Kayak and stand-up paddleboard rentals
On-site at Alta Lake State Park's day-use/beach area · Weekends only in April-May; daily Memorial Day through Labor Day, 8:00 a.m.-7:00 p.m. weekdays and 8:00 a.m.-8:00 p.m. weekends
Stand-up paddleboard rentals (group, half-day, full-day, and multi-day packages); owner Libby Harrison delivers boards to customers
Based in Pateros, WA; delivers to Alta Lake, Brewster, and Pateros
What regulars say
Local-news reporting offers the best visitor picture: a 2020 Methow Valley News feature quoted park manager Sharon Soelter saying the park has 'been discovered' and become 'significantly busier,' while adding 'we haven't had any issues' with the added crowds. The same piece notes the onsite Paddle EZ rental shop was closed that particular season due to COVID-19, so on-site rental availability may vary by year and is worth confirming ahead of a visit.
Backstory
The lake was named in 1900 by a jeweler and miner from Wilbur, WA after his daughter, Alta Heinz. The City of Pateros donated the land to establish the state park in 1951. The 2014 Carlton Complex Fire severely damaged the park, closing it for about five weeks during recovery.
Alta Lake State Park: FAQ
Does Alta Lake State Park charge a fee?
Discover Pass required for day use (annual pass $45 or one-day pass $10); watercraft launch fee $7/day; overnight vehicle fee $10/night; trailer dump fee $5/use.
Is Alta Lake State Park kid friendly?
The designated swim zone is a large sandy beach that slopes gently into the water and is roped off, separating swimmers from the boat launch/dock area, which local news describes as drawing families. No lifeguard presence was confirmed one way or the other in any source found, so supervise kids closely despite the gentle, protected setup.
Do I need to hike to reach Alta Lake State Park?
No significant hike is required. The swimming area is close to parking and access.
Where do I park for Alta Lake State Park?
Day-use parking is limited to a fixed number of designated stalls in the day-use area; no roadside parking is permitted, so the park manages crowding by capping how many vehicles can park at once (per 2020 local news coverage).
Can I bring a kayak or paddleboard to Alta Lake State Park?
The official state park page lists boating, kayaking, paddleboarding, and water skiing as available summer activities, with a separate boat launch and dock kept apart from the roped-off swim zone.
When is the best time to visit Alta Lake State Park?
Summer (park operates April-October; swimming and beach use centered on summer months per the 2020 season described in local news coverage).
What are the rules at Alta Lake State Park?
Park is open April through October (closed November 1-March 30); summer hours are 6:30 a.m. to 10:00 p.m.; waterskiing and personal watercraft use restricted to 9:00 a.m.-6:00 p.m. by local ordinance; fire restrictions apply during burn bans (only gas/propane stoves and self-contained fire pits permitted under Burn Ban Level 3).
What water body is Alta Lake State Park on?
Alta Lake State Park is on Alta Lake, a natural lake verified in USGS hydrography data.
