Course at a Glance

Form and Function: Exploring Tidal and River Channels
October 5
Cal Poly Humboldt campus/field trip

Form and Function: Exploring Tidal and River Channels


With Mary Ann Madej, River Scientist

Understand the similarities and differences between two important types of water channels. We’ll start our field trip with a walk along a river channel near Arcata, where we will examine the attributes of a freshwater river system. Next, we will travel to the Arcata Marsh and Wildlife Sanctuary to observe tidal channels and discuss similarities and differences in the two systems. Learn about the implications for water quality, fish and bird habitat, and sea level rise. How have humans affected both systems? What types of restoration efforts are underway?

For classes being offered on campus M-F, and if you are an OLLI member, a parking permit is included in your class fee. Please allow yourself enough time to get your parking permit and to get to the classroom to arrive on time. See campus map. Visitors and guests to campus/OLLI classes must be either fully vaccinated or have tested negative within 72 hours of coming to campus. We encourage all participants to take a rapid test before attending any OLLI class or event.

Wed., Oct. 5 • 1-4 p.m.

In-person: On campus and field trip

$35 • Class #: 43930

Register now


Mary Ann Madej

Mary Ann Madej

Dr. Mary Ann Madej worked as a geomorphologist with the U.S. Department of Interior for 35 years, where she monitored river and beach changes for decades. She has explored coastlines in many diverse environments, such as Central and South America, Alaska, New Zealand, Japan, China, Italy, France, and Scotland.