Waucoma Bookstore and the Columbia Gorge chapter of the Ice Age Floods Institute are hosting author and geologist Bruce Bjornstad for a presentation on his new book On the Trail of the Ice Age Floods, Northern Reach: A Geological Field Guide to Northern Idaho and the Channeled Scabland.

The presentation will be on Sunday, Sept. 23, at 2 p.m. in the meeting room at the Hood River County Library (502 State St., Hood River).