Marco Flats Fishing Access Site on the Blackfoot River Site Location Region 2 Glacier Country Nearest Town: Missoula Site Facts Open:Jan 1 - Dec 31 Size: 2 acres Elevation: 3294 ft FAS Map Location Map Waterbody Map Important Notice Hunting and/or discharge of weapons prohibited. Marco Flats Fishing Access Site is located on the Blackfoot River 3 miles from the mouth on the left hand side as you face downstream. Angevine is the next access site upstream from Marco Flats. Directions 2 miles east of Bonner on Hwy 200. (Lat 46.889687 , Lng -113.82973 ) Restrictions & Closures Weapons Restriction Hunting and/or discharge of weapons prohibited. Vehicle Length Site is accessible. Activities & Facilities Hide all Show all Activities Boating Fishing Boat Services Hand Launch - Primitive launch.