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10 events found.

Cheney-Spokane

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  • October 2025

  • Sat 18
    Williams Lake Cataract

    🗺️ Cheney-Spokane Chapter Fall Field Trip

    October 18, 2025 @ 9:00 am - 3:00 pm PDT

    Saturday, October 18, 9:00 AM – approx. 3:00 PM No cost • Car caravan format • BYO food & drinks After a summer of record heat, haze, and delay, cooler weather has finally arrived—and so has our rescheduled fall field trip! Join us on Saturday, October 18, just one week after our annual membership meeting, for a full-day exploration of the northern Cheney-Palouse scabland tract. This year’s trip will spotlight the landscape that first led J Harlen Bretz to propose a massive outwash flood beneath an ice cap—before he reluctantly considered Thomas Pardee’s theory of glacial Lake Missoula as the water source. We’ll trace their steps and interpretations across key sites, guided by: Dr. Linda B. McCollum, Professor Emeritus at EWU and current chapter president Glenn Cruickshank, who has meticulously mapped Bretz’s and Pardee’s field notes using Google Earth 🧭 Trip Overview We’ll meet at 9:00 AM at the Cheney-Spokane Chapter parking lot (1st Street & Cheney Plaza Road, south end of Cheney) for a quick briefing. From there, we’ll caravan to: Turnbull Wildlife Refuge HQ – hike and discussion of scabland channels Williams Lake Cataract – second only to Dry Falls in scale Amber Lake – loess island and classic scabland topography Lunch break in Cheney – bring your own food and drinks Fish Lake (Cheney-Spokane Road) – scour pools and rock blade formations Marshall – glacial outwash delta and broad flood channel features We expect to wrap up around 3:00 PM. All stops have ample parking, so there’s no limit on vehicles—everyone’s welcome! 📝 What to Bring Your own food and drinks A signed liability form (click on the red button below to download and print one that you can bring to the event) Curiosity, good shoes, and maybe a camera! This is a great chance to revisit foundational flood geology with fresh eyes and expert insight. We hope to see you there!  

  • March 2026

  • Tue 10

    The Ice Age Floods History of the Cheney Area

    March 10 @ 6:00 pm - 7:30 pm PDT
    Cheney Community Library 610 1st St, Cheney, WA

    The landscape upon which the town of Cheney has been built bears silent witness to one of the greatest series of catastrophic floods that has ever been documented on our planet. In this talk, we delve into how the leading scientists, both past and present, have interpreted this landscape as a consequence of one immense glacial lake pouring into another glacial lake, which then overflowed and breached the southern shoreline to create the vast channeled scablands.  Presented by Dr. Linda McCollum, professor emeritus of geosciences at EWU and president of the Ice Age Floods Institute (IAFI), Cheney-Spokane Chapter Registration is required.

  • Sat 14

    Combined Chapter Hike – Escure Ranch / Towell Falls

    March 14 @ 10:00 am - 3:00 pm PDT
    Escure Ranch Washington

    The Palouse Falls and Cheney-Spokane Chapters of the IAFI invite you to a hike at Escure Ranch on the BLM Rock Creek Recreation Site on Saturday, March 14. The hike will start at 10:00 a.m. It will be led by Don Chadbourne, geologist and board member of the Cheney-Spokane Chapter, and Lloyd Stoess, president of the Palouse Falls Chapter. You will meet the leaders at the trailhead. Description of the Escure Ranch Hike The hike will begin and end at the Escure Ranch parking area, of the Bureau of Land Management, Rock Creek Recreation site. The hike will follow an old ranch road to Towell Falls and return on the same route. The out and back hike will be about 6.5 miles.  The trail is mostly double track over dirt and rock, with an elevation gain and loss of about 160 feet.  The hike is a pleasant trek through a remote scabland canyon.  Features will include rock benches and basins, flood bars, Mima mounds, mesas and waterfalls.  This hike is included in the book, On the Trail of the Ice Age Floods – Northern Reaches, by Bjornstad & Kiver.   Directions to the trailhead will be provided to hikers after registration. Click on the Register button to sign up for the hike. The hike will be limited to 30 hikers. Items to bring with you: appropriate shoes, day pack, water, snacks, appropriate clothing for changes in the weather, sun protection, emergency items, camera and binoculars. Walking poles will be helpful. The hike is free; however, donations for support of Chapter activities will be accepted. For additional questions, contact Don at 509-891-5875, or Lloyd at 509-954-3927. Map available for download: 11 x 17 LIDAR map of Escure Ranch Area showing our hiking route to Towell Falls (downloadable PDF)

  • Tue 24

    Dating Erratic Boulders: How Long Ago Were the Floods?

    March 24 @ 6:00 pm - 7:30 pm PDT
    Deer Park Library 208 S Forest Ave, Deer Park, WA

    How do geologists know when the ice age floods actually occurred in the Spokane area? One method is to date the large flood-rafted erratic boulders. We explore the ages of the floods and the methods used to determine their dates and present newly gathered dates from the Spokane region revealing when the floods happened.  Presented by Glenn Cruickshank, vice president of the Ice Age Floods Institute (IAFI), Cheney-Spokane Chapter Registration is required.

  • April 2026

  • Sat 4

    Cheney-Spokane Chapter Hike – Palisades Park 2026

    April 4 @ 1:00 pm - 3:00 pm PDT
    Palisades Park 2-198 S Rimrock Dr, Spokane, WA, United States

    The 3-mile hike will be led by IAFICS board member geologist Michael Hamilton. It will take place along Rimrock Drive, which has spectacular views of Spokane and the Spokane Valley. The Glacial Outburst Flood Story will include a lot of "arm-waving," pointing out flood features both along the trail and with views to the east. The geology discussion will include details of another kind of flood that hit the Spokane area 14 million years ago. The hike will then cut to the west along one of the park's trails to find mysterious Mima mounds, and then loop back to the parking area.    

  • June 2026

  • Fri 12

    Athol: Introduction to the Ice Age Floods and the National Geologic Trail

    June 12 @ 1:00 pm - 2:30 pm PDT
    Athol Library 30399 3rd St, Athol, ID

    Details to come. Presented by Don Chadbourne, geologist and board member of the Ice Age Floods Institute (IAFI), Cheney-Spokane Chapter Registration is required. It will be linked here as soon as it has been posted to the library website. https://communitylibrary.net/library/athol/

  • Tue 16

    Harrison: Introduction to the Ice Age Floods and the National Geologic Trail

    June 16 @ 4:30 pm - 6:00 pm PDT
    Harrison Library 111 S Coeur d’Alene Avenue, Harrison, ID

    Details to come. Presented by Don Chadbourne, geologist and board member of the Ice Age Floods Institute (IAFI), Cheney-Spokane Chapter Registration is required. It will be linked here as soon as it has been posted to the library website. https://communitylibrary.net/library/harrison/

  • July 2026

  • Tue 7

    Hayden: Dating Erratic Boulders: How Long Ago Were the Floods?

    July 7 @ 1:00 pm - 1:30 pm PDT
    Hayden Library 8385 N Government Wy, Hayden Lake, ID

    How do geologists know when the ice age floods actually occurred in the Spokane area? One method is to date the large flood-rafted erratic boulders. We explore the ages of the floods and the methods used to determine their dates and present newly gathered dates from the Spokane region revealing when the floods happened.  Presented by Glenn Cruickshank, vice president of the Ice Age Floods Institute (IAFI), Cheney-Spokane Chapter, and Dr. Jim O'Connor, USGS Registration is required. It will be linked here as soon as it has been posted to the library website.

  • Tue 14

    Rathdrum: Dating Erratic Boulders: How Long Ago Were the Floods?

    July 14 @ 3:00 pm - 4:30 pm PDT
    Rathdrum Library 16320 ID-41, Rathdrum, ID

    How do geologists know when the ice age floods actually occurred in the Spokane area? One method is to date the large flood-rafted erratic boulders. We explore the ages of the floods and the methods used to determine their dates and present newly gathered dates from the Spokane region revealing when the floods happened.  Presented by Glenn Cruickshank, vice president of the Ice Age Floods Institute (IAFI), Cheney-Spokane Chapter Registration is required. It will be linked here as soon as it has been posted to the library website.

  • Tue 21

    Spirit Lake: The Ice Age Missoula floods and the Spirit Lake giant current dune field

    July 21 @ 1:00 pm - 2:30 pm PDT
    Spirit Lake Library 32575 N 5th Ave, Spirit Lake, ID

     Giant Current Dunes or MegaRipple Marks – One of Bretz’ most important pieces of evidence for catastrophic flooding was the “giant current dunes.” These large-scale bedforms appeared as patterns of parallel ridges and swales on many aerial photographs in the flood channels in the scabland of Washington, but had escaped recognition from the ground because of their size.  Giant Current Dunes are visible west of Clark Fork near Castle Rock; however, the most prominent and visible Giant Current Dunes are located several miles east of Spirit Lake along Hwy 54 where the highway cuts through the dunes showing their undulating profile. The location of many of the telephone poles on the crest of these dunes accentuates these landforms. The dunes form transverse to the current direction, and form cusps that are convex upstream, with arms that point downstream. Furthermore, the size of the cusps appears to decrease in the direction of lower velocity. Internally, the dunes consist of gravel and pebble foresets. Giant current dunes exhibit an asymmetrical profile with the downstream (lee) slope steeper than the upstream slope. Crests range from 20 to 200m apart and heights range from 1 to 15m (Baker and Nummedal, 1978) and are among the largest measured throughout the Floods area. The Spirit Lake current dunes can also be easily recognized from the air by their characteristic pattern, accentuated by vegetation. This dune field is immediately in the path of the breakout from Lake Pend Oreille, and experienced some of the highest energy flows. Presented by Dr. Linda McCollum, president of the Ice Age Floods Institute (IAFI), Cheney-Spokane Chapter Registration is required. It will be linked here as soon as it has been posted to the library website (https://communitylibrary.net/library/spirit-lake/).

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