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Enjoy a festival, join a fun run, tour an interpretive site, or just make your own celebration with a family picnic or camping trip. Choose from dozens of activities and events throughout the year. You can submit your state park event via email to get it placed on the calendar. The Discover Pass is required for vehicle access to Washington state parks and state-managed recreation lands. For more information, visit the Discover Pass website.


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  1. Calendar Overlay Battle Ground Lake State Park (2)
  2. Calendar Overlay State Park Free Days (1)

Battle Ground Lake State Park

  1. Summer Saturday evening - Slugs!

    August 24, 2019, 7:30 PM @ Battle Ground Lake State Park

    Learn about our slimy friends and their important role in our ecosystem.

    Presenter: Marcia Hale, Hillsborough Library director and NAI interpretive guide

    Signs will guide you to the day-use pavilion for this one-hour program.

    More Details
  2. Summer Saturday evening - batty for bats

    August 31, 2019, 7:00 PM @ Battle Ground Lake State Park

    "Bat" by popular demand! Learn about bats in general, how they help us, and what we can do to help them. Focus on native bats of Washington, especially the little brown bat. Kids can make a bat craft.

    The presenter will be Ellen M. Wilson, volunteer at Columbia Springs and Battle Ground Lake State Park

    Signs will guide you to the day-use pavilion for this one-hour program.

    More Details

State Park Free Days

  1. State Parks Discover Pass Free Day

    August 25, 2019, All Day

    To celebrate the National Park Service's 103rd birthday, today is a State Parks "free day" when a Discover Pass is not required to visit a state park. Please note, free days apply only to day use (not overnight stays or rented facilities). A Discover Pass is still required to access lands managed by the Washington state departments of Natural Resources and Fish & Wildlife on these days.

    More Details