Online Highways Home > Oregon >


Willamette Valley Geologic Province

The Willamette Valley province forms a catch basin between the Coast Range and the Cascades. The sediments collected in it record multiple Ice Age floods that originated in Montana, poured through the Cascades (via the Columbia River) and backed up here in the valley before eventually draining to the Pacific Ocean.

Plan your vacation to the Pacific Northwest with a packet of information in the mail and you may win a $200 gift certificate courtesy of our sponsors.

. See more Science.

The Most Anticipated Upcoming Oregon Events Are:
Goonies 25th Anniversary Astoria continuing thru June 30
Oddwater - Where it's OK to be weird Newport continuing thru January 1
White Burgundy Carlton continuing
Oregon Coast Explorer Rockaway Beach continuing thru September 30
Wine, Cheese & All That Jazz Rockaway Beach continuing

Other upcoming events include:
Arts and Crafts Fair Rockaway Beach August 15 thru August 16
Oregon Coast Explorer Rockaway Beach continuing thru September 30
Oddwater - Where it's OK to be weird Newport continuing thru January 1
Tours at Heceta Head Florence continuing thru September 30
History of Communities on the Lower Umpqua River Reedsport continuing thru December 17

Search
Oregon