The Lake Lewis Chapter is based in the Tri-Cities, Wash., and represents south-central and southeastern Washington and the adjacent areas in Idaho and Oregon.

Chapter Officers
President: George Last | (509) 946-8050
Vice-President Gary Kleinknecht | (509) 627-1654
Secretary: Donna and Ken Hoopingarner
Treasurer: Monte Nail | (509) 783-7832

The chapter is named for Lake Lewis, the large temporary lake that formed in the Pasco Basin when floodwaters were held back by the hydraulic dam caused by Wallula Gap.

Chapter Meetings – The Lake Lewis Chapter meets six times a year (Jan., Mar., May, July, Sept., Nov.) on the second Tuesday of the month, at the Battelle Auditorium (click here to display map), 900 Battelle Blvd., in Richland, or other alternate location. Meetings begin at 6:45 p.m. with a lecture presentation, followed by a business meeting. Meetings are always free and open to the public. To confirm meeting information, contact the chapter president.

Community Activities and Partners – The Lake Lewis Chapter is actively engaged in the community. We have participated in a number of local and regional community events including the Coulee Corridor Big Event, the Sandhill Crane Festival, and the Tri-Cities Visitor and Convention Bureau’s annual meetings, county fairs, gem and mineral shows, etc. Our speakers bureau gives lectures to educational institutions, Rotary and other community organizations, professional society meetings, and others.

Committee Chairpersons
Membership: George Last | (509) 946-8050
Field Activities: Bruce Bjornstad | (509) 373-6948
Nominations: Carma Kimball | (509) 943-5865
Publicity: Gary Kleinknecht | (509) 627-1654
Speakers Bureau: Gary Kleinknecht | (509) 627-1654

We have strong partnerships with several important community organizations, including the CREHST museum, the Hanford Reach National Monument, the Tri-Cities Visitor and Convention Bureau, Friends of Badger Mountain, City of Richland, Battelle, the East Benton County Historical Society, the Franklin County Historical Society, the Hanford Reach National Monument, the Fish and Wildlife Service, the Mid-Columbia Library, and Bergstrom Aircraft (charter sightseeing flights).

Expert Scientific Advisors
Bruce Bjornstad | (509) 373-6948
George Last | (509) 946-8050
Chris Murray | (509) 946-7217

The Mid-Columbia Library has been provided a list of recommended titles and some materials about the Ice Age Floods. The library has many related titles on the shelves and will continue to acquire more Floods material.

Please see the Upcoming Events to the right or the General Events Calendar for a listing of all chapter meetings and events.