[OR_Archaeology] Geomorphic Mapping of the Columbia and Willamette River Floodplains --- Connecting Landforms to Processes

[John Pouley]

We hope you can join us at the next Rivers Office River-in-Focus brownbag!
__________________________________

Geomorphic Mapping of the Columbia and Willamette River Floodplains --- Connecting Landforms to Processes

Tuesday, December 18th, 2012

Noon to 1:00 PM

Portland Building Auditorium, 1120 SW Fifth Ave., 2nd Floor, Portland, OR 97204

The Columbia and Willamette are shaped by a striking array of physical and biological processes. Recent, highly detailed, geomorphic mapping of the Lower Columbia River and portions of the Willamette River are revealing landforms created by geologic processes that work over a variety of temporal and spatial scales --- from the ice-age Missoula Floods, which defined overall valley geometry, to annual freshets that build channel-flanking sand bars.

This mapping aids conservation strategies by providing an inventory of landforms and associated habitats; a basis for evaluating alterations and trajectories; and, most importantly, a framework for linking habitats and landforms to specific formative processes, thereby equipping managers with data needed to achieve realistic and sustainable objectives.

Join Jim O'Connor, research hydrologist with the U.S. Geological Survey, as he describes how our area's newest mapping is shedding light on conservation opportunities.

------------------------------------------------------------------------

For more information, contact:
Rick Bastasch, Coordinator
City of Portland Office of Healthy Working Rivers
1120 SW Fifth Ave., #1000, Portland, OR 97204
503.823.0275
www.portlandonline.com/river<http://www.portlandonline.com/river>