Natural swimming hole
Mayfield Lake (Ike Kinswa SP)
Lake · Washington
Community-reported spot. Details below are compiled from public sources and are reported to be accurate — always verify locally before visiting.
About this swimming hole
Ike Kinswa State Park sits on Mayfield Lake with a swim beach in the Cowlitz River impoundment. The park's forested setting near the Cowlitz is peaceful. It is a favorite for South Lewis County families.
Good to know
| Water type | Lake |
|---|---|
| Water temperature | 60s-70s in summer |
| Depth | reservoir with swim beach |
| Best season | June-September |
| Fees | $10 day use (Discover Pass) |
| Reservations required | No |
| Hours | 8am-dusk |
| Parking | park lots |
| Amenities | restrooms, picnic tables, campground |
| County | Lewis County |
| Nearest town | Mossyrock |
| Safety notes | no lifeguard; boat traffic |
Map
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Frequently asked questions
Can you swim in Mayfield Lake (Ike Kinswa SP)?
Yes — Mayfield Lake (Ike Kinswa SP) is listed as a natural swimming spot in Washington. Reported water temperature: 60s-70s in summer. Heads-up: no lifeguard; boat traffic. There are rarely lifeguards at natural swimming holes — verify conditions locally before you go.
Does Mayfield Lake (Ike Kinswa SP) require reservations?
No reservations are required at Mayfield Lake (Ike Kinswa SP) based on current information — but verify before you go.
Is there a fee to visit Mayfield Lake (Ike Kinswa SP)?
Reported fee info: $10 day use (Discover Pass). Fees can change — confirm with the official link.
When is the best time to visit Mayfield Lake (Ike Kinswa SP)?
The best season is typically June-September.