Yesterday I put in at Trophy Club Park (off 114 headed to Dallas) The "river" is a feeder to Lake Grapevine.  I just charted a map of the paddling trip. We covered about 12 miles (thought it was 14) The weather was great. Not too much wind and plenty of sun. This was an easy paddle.  and not too far to drive. This paddle trip was with MeetUp group DFW Paddlesports, Kayak, Canoe, and SUP.