Rules & Regulations

At Millersylvania State Park, dogs must stay on a leash no longer than eight feet and are not allowed on the swim beaches. Fires are allowed only in designated fire pits, and only when no burn ban stops them; gathering firewood is prohibited. Boats keep to 5 mph with no wake on Deep Lake, horses are not allowed, and every day-use car needs a Discover Pass.

Parking and Hours

• Display a Discover Pass when you park for the day. The fine for not displaying one is $99. See Discover Pass.
• Day-use areas close at dusk. The park opens at 6:30 a.m. in summer and 8 a.m. in winter. Campers may enter until 10 p.m. See hours.

Dogs and Pets

• Pets must be under physical control on a leash no longer than eight feet, everywhere in the park, trails and campsites included.
• Clean up after your pet.
• No pets on designated swim beaches.
• No pets in the Lakeside Cottage, and none at the retreat center.

Fires and Firewood

• Fires only in designated areas: campsite fire pits and grills.
• Burn bans come first. In August 2026 the park posted a Level 2 burn ban: wood fires only in fire pits in designated areas, gas and propane allowed, charcoal possibly restricted. Check the park's alerts page for the current level.
• Don't gather firewood. Downed trees and branches are left as ground cover. Buy wood from the Boy Scout stall near campsite 132 in summer, the camp host or the ranger station.
• Don't bring firewood from home. Washington State Parks asks you to buy it within 10 miles to avoid spreading forest pests.

On Deep Lake

• 5 mph, no wake, on the whole lake.
• The launch is hand-carry only: no trailered boats.
• No glass bottles or metal cans on swim beaches.
• WDFW fishing rules and licenses apply. See fishing.

Camping Rules

• One camping party per site, up to eight people.
• Check-in 2:30 p.m., check-out 1 p.m. You can't hold a site for someone arriving later.
• Quiet hours 10 p.m. to 6:30 a.m. Generators may run 8 a.m. to 9 p.m.
• Stay limit: 10 nights in one park within 30 days, 90 nights a year in all state parks.
• See camping.

Metal Detecting

Metal detecting is allowed only in the park's designated metal detecting area, shown on the agency's metal detecting map (about 2.23 acres). Download the map from the park page before you go.

Alcohol, Smoking and Cannabis

• Alcohol only in designated campground and picnic areas. Lakeside Taphouse serves drinks in summer at its cabin near Kitchen Shelter #2.
• No smoking inside the cottage, cabins or other rustic structures.
• Cannabis use is not permitted in public spaces.

Wildlife, Plants and Buildings

• Don't feed wildlife or harm plants and animals.
• Every plant, animal, building, sign and table in the park is protected; removing or damaging anything is prohibited. That includes the 1930s CCC buildings.
• Hunting and shooting are not allowed on state park land.

Other Rules

• No horses.
• No fireworks on any state public land.
• The trail near campsite 31 is closed indefinitely.
• Report problems to a park ranger, or call the park at (360) 753-1519. In an emergency, call 911.

The full rules are in the park rules chapter of the Washington Administrative Code, linked from the agency's rules page.