THEME: WATER in phrases which are read across and down featuring unnumbered and unclued spaces --- I think
GOOD ONES: River phenomena (or what literally happens six times in this puzzle) WATER + FALLS [literaaly the water falls because they are Down answers]
Breed canines? TEETHE
Scoreless trio? ESSES [3 s's]
NYC country club? THEUN
Broke ground HOED
BTW: I found this very difficult doing it in the doctor's waiting room this morning (that's why I'm late today. I do have access to the puzzles a day or so in advance to help in these posts and will attempt to use the service next time. I prefer solving puzzles by pen rather than by keypad.) Anyway, it was fun trying to figure out what to do.
RATING:
Three grins = Loved it; Two grins = Enjoyed it; One grin = A bit bland for my taste; One teardrop = Not much fun