Season
- Season 10 1970-01-01
- Season 11 1970-01-01
- Season 12 1970-01-01
- Season 13 1970-01-01
- Season 14 1970-01-01
- Season 15 1970-01-01
- Season 16 1970-01-01
- Season 17 1970-01-01
- Season 18 1970-01-01
- Season 19 1970-01-01
- Season 20 1970-01-01
- Season 21 2009-08-08
- Season 22 1970-01-01
- Season 23 2011-10-06
- Season 24 2012-10-04
- Season 25 2013-10-03
- Season 26 2014-10-23
- Season 27 2015-10-01
- Season 28 2016-10-09
- Season 29 1970-01-01
- Season 30 1970-01-01
- Season 31 1970-01-01
- Season 32 1970-01-01
- Season 33 1970-01-01
Season 33 Episode
- Season 24 Cranberry Farming, Grebes Walk on Water, North Umpqua Geology
- Season 24 Citizen Science, Ice Diving, Time-lapse Photography
- Season 24 Cattle Drives, Gorge Weeds, Timberline 75th
- Season 24 Mt. Hood's Volcanic Past, Warren Falls, Yellow Tuft Alyssum
- Season 24 Cloud Cap Inn, Drift Diving, Jim Rogers
- Season 24 Aerial Fish Stocking, Hiking from Portland to the Pacific Coast, Stormwater
- Season 24 Autumn Rivers Photo Essay, Condors and Lead Bullets, Outdoor School
- Season 24 Christmas Bird Count, Forest Park BioBlitz, Llama Backpacking
- Season 24 Backpacking the Olympic Coast, Columbia River Toxins, Portland Fruit Tree Project
- Season 24 River of the Rogues
- Season 24 Diving for Science, Hanami
- Season 24 The White Salmon River Runs Free: Breaching the Condit Dam
- Season 24 Dory Builder, The Tuesday Crew, Willamette Greenway
- Season 24 Classroom at Crater Lake, Photographer Bill Wallauer, Wolf Haven International
Oregon Field Guide - Season 24 Episode 4 Mt. Hood's Volcanic Past, Warren Falls, Yellow Tuft Alyssum
10.00 48 minutes Mt. Hood's Volcanic Past Mt. Hood is an active volcano with a history of relatively recent eruptions. Warren Falls A man-made waterfall in the Columbia Gorge blocks a natural fall. One man wants to end that. Yellow Tuft Alyssum A new invasive species from Europe has been introduced in the Illinois River valley.
