Fishing#Rafting#River Fishing#SwimmingFishing Access Site#Public Access SiteBoat Launchdbo2026-04-04T17:01:54Diamond Willow Fishing Access Site is located off Highway 16, 1 1/2 miles south of Sidney, 2 1/2 mile east on Highway 23, 7 miles northeast on county road, 1 mile north on county road.1fwprg72@mt.gov47.756000-104.054000Miles CityMontana Fish, Wildlife & ParksMTPO Box 163059301Diamond Willow Fishing Access Site is day use site only on the Yellowstone River. Primitive site, hand launch small craft. Open all season.406-234-0900All YearSidney132871|http://www.visitmt.com|Y#11|http://www.wintermt.com|#32|http://www.lewisandclark.state.mt.us|#94|http://indiannations.visitmt.com|Diamond Willow Fishing Access SiteMISSOURI RIVERMissouri RiverFishing Access Sitehttp://fwp.mt.gov