Willamette Riverkeeper -- Portland, Oregon
Mount Pisgah Arboretum -- Home Page
If you want to enhance your natural history experience on the Willamette
we suggest getting a copy of the 'Willamette River Interpretive Manual'
by local naturalist, Elizabeth Gates. This 60-page, water-resistant
book is designed to take on board as you float the quieter stretches. It
features geological and historical information, identifies seasonal plants
and wildlife and includes self-guided trip logs. $7.95 (S&H included)