Originally from Sonoma, California, Riis has lived in the Portland area since 1991. She has volunteered for Portland Open Studios and taught art to children through Hillsboro’s Bienestar. She is a member of The Village Gallery of Arts, where she served for two years as president of the board of directors. Riis organized Affordable Art for Everyone from 2015 through 2017. She is also the organizer of Westside ArtShare, a group of women artists.
July 2019, Big and Small exhibition, Columbia Center for the Arts, Hood River, OR.
June-July 2020, four person show, Walters Cultural Arts Center, Hillsboro, OR.