Bohannon shot 7 of 11 from the floor. Bennett Koch added 15 points on 6-of-9 shooting for Northern Iowa (10-7, 2-2 Missouri Valley Conference), which bounced back from a one-point loss to Missouri State on Jan. 6, and broke a two-game losing skid.
Reed Timmer scored 10 points and grabbed eight rebounds to lead Drake (5-11, 0-4). The Bulldogs scored a season-low 44 points and have lost four-straight games and eight of their last nine.
The Panthers had a double-digit lead midway through the first half, built a 41-20 halftime lead and never trailed.
Northern Iowa has won 14-straight conference home games dating to back to last season.