Read Our Summer Issue of The Otter!

The Big Sioux River watershed is the ancestral, traditional, and contemporary lands of the Bdewakaŋtuŋwaŋ, Waȟpekute, Sisituŋwaŋ, and Waȟpetuŋwaŋ bands of the Dakota Oyate (Flandreau Santee Sioux Tribe) and (Sisseton Wahpeton Oyate Tribe). We gratefully acknowledge the Native Peoples on whose ancestral homelands we gather and who have stewarded the lands and waterways through time immemorial.

©2026 Friends of the Big Sioux River (FBSR)

400 N Main Ave, Suite 205
Sioux Falls, SD 57104

(605) 679-6973
director@friendsofthebigsiouxriver.org

Info

Mission
Watershed
FAQ
Blog

Action

Volunteer
Contact
Donate

Join our mailing list to receive news and updates.