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  • April 2026

  • Sat 11

    Lower Crab Creek Field Trip

    April 11 @ 10:00 am - 3:00 pm PDT
    CMSP&P Bridge, Beverly, WA 46.83539588686751, -119.93816967222578, Beverly, WA, United States

    Saturday April 11—Lower Crab Creek.  We will meet on the east end of the Chicago, Milwaukee, St. Paul & Pacific bridge in Beverly at 10:00am.  Over the day,  we will explore: 1) the tectonic  origins of Crab Creek “Coulee” and the Saddle Mountains; 2) impacts of Ice Age flooding on the area; 3) formation of prominent rockfall and landslides from the Saddle Mountains; and 4) how geology, weather and climate, and human activity have shaped sand dunes and salt flats in the area. The trip will conclude around 3pm giving participants plenty of time to get back to Ellensburg for Nick Zentner’s lecture.   More details will be forthcoming.  Field trip leader Karl Lillquist.

  • August 2026

  • Sat 29

    Bretz Was Right: A Pre‑Birthday Floods‑Fest

    August 29 @ 10:00 am - 2:00 pm PDT

    Save the date! Our chapter is planning a special late‑summer gathering on Saturday, August 29, in honor of J Harlen Bretz, whose birthday falls just a few days later (September 2). Bretz’s groundbreaking work on the Ice Age floods reshaped the scientific understanding of the Northwest—and we think that deserves a celebration. We’re still shaping the details, but expect a relaxed, community‑friendly event that highlights Bretz’s legacy and the remarkable landscapes he helped the world understand. More information will be posted as plans develop.   He mapped the scablands bold and bright, Said “Floods did this!” with all his might. For thirty years they told him “No”… ’Til evidence began to flow. So join us as we celebrate The man who made the floods make sense — A pre‑birthday bash for J Harlen Bretz, Who proved the skeptics wrong (immense!).  

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