Many flat area are along the Haw River.  However for larger flat areas for fishing, rowing laps, 
etc use the following guide:

1. The area above Sax. dam provides about a mile + of wide slow water in normal conditions.
2. From the City of Haw River to the Graham out-take spot.  There may be debris at the I-40 bridge. This may be about 2.5 miles long or a 1 to 1.5 hour paddle.
3.