Pearrygin Lake State Park, Northern Cascade Range, Washington Amenities AMENITIES Tent camping is available RV hookups are available - 97 RV hookups Pets are allowed - Must be on a leash not longer than 8 feet, under control and not allowed to bark or otherwise disturb the peace and tranquility of the park. Campfires are allowed - Park will invoke restricitons as conditions warrant during the summer. Has Store - Groceries, sundries, espresso, fresh sandwiches and pizza. Grocery store nearby - In Winthrop Pool - Town of Twisp No Game Room