Carved Maple Canoe Paddle, possibly Northeast.
The paddle does feature one simple decorative element right at the throat - a sort of diamond carving pattern. Here's a closeup...
Closeup of diamond motif at throat
A similar bit of carving decoration can be seen in this post which highlighted a pair of Children's paddles of Penobscot origin from the CherryGallery.com
Pair of Child's Canoe Paddles
5" w, 42.75" h
Diamond Motif carved at throat