| Cultivar | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Boundary Waters' | Large | Blue/Green | - | - | Unknown | Near-White | July | Olson, Tom | .1999 |
| 'Breakwater' | Medium | Blue/Green | Marginal | Yellow | Unknown | Near-White | June | Goodwin, Randy | .2020 |
| 'Cascading Waters' | Large | Med-Green | Marginal | White | Hybrid | Pale-Lavender | August | Dean, Don | .2005 |
| 'Chris' Little Watermelon' | Small | Med-Green | | | Nat-Sport | Pale-Lavender | | Brinkmann, Christina | --NR-- |
| 'Clattering Water' | Medium | Blue/Green | - | - | Sport | Med-Lavender | - | Fransen, Marco & Fransen, Joyce | --NR-- |
| 'Cool Waters' | Medium | Blue/Green | - | - | Hybrid | Light-Purple | June into July | Zilis, Mark | .2010 |
| 'Cosmic Watercolors' | Medium | Med-Green | Streaked | Yellow | Hybrid | Near-White | July into August | Kuenster, Rod | .2011 |
| 'Dark Waters' | Large | Dark-Green | - | - | Unknown | Light-Purple | July | Rogers, Floyd | .2005 |
| 'Deep Waters' | Large | Blue/Green | - | - | Hybrid | Pale-Lavender | July into August | Dean, Don | .2014 |
| 'Dusty Waters' | Small | Blue/Green | - | - | Sport | Near-White | July | Naylor Creek Nursery | --NR-- |
| 'Emerald Waters' | Small | Med-Green | - | - | TC Sport | Pale-Lavender | July into August | Micheletti, Tom | .2011 |
| 'Falling Waters' | Large | Med-Green | Medial | Yellow | Hybrid | Med-Lavender | July | Lachman, Wm & Lachman, Eleanor & Walek, Kevin | .2009 |
| 'Falling Waters Streaked' | - | - | - | - | Sport | - | - | Schmid, Tom | --NR-- |
| 'Frensham Icy Blue Waters' | Large | Blue/Green | | - | Unknown | Near-White | July into August | Colley, June & Baker, John | .2020 |
| 'Holar Smoky Water' | Medium | Blue/Green | - | - | Hybrid | - | - | Van Keer, Ronny | --NR-- |
| 'Honey Hill Water Ladle' | Large | Dark-Green | - | - | Hybrid | Near-White | July | Hadrava, Jerry | .1999 |
| 'Kiwi Watercolours' | - | Yellow | - | - | Unknown | - | - | Sligh, Barry | --NR-- |
| 'Krugerrand Watermark' | Large | Light-Green | Marginal | Yellow | Unknown | - | - | Doughty, Chuck | --NR-- |
| 'Lakeside Waterfall' | Small | Yellow | - | - | Unknown | Near-White | June | Chastain, Mary | .1998 |
| 'Living Water' | Medium | Med-Green | Marginal | Yellow | Sport | - | June into July | Silvers, Bill | .2009 |
| 'Misty Waters' | Large | Blue/Green | - | - | Unknown | Near-White | July into August | Fisher, Eunice V. | .1986 |
| 'Nature's Watercolor' | - | - | - | - | Hybrid | - | - | Jolliffe, Thomas | --NR-- |
| 'Quiet Water Disturbed' | Large | Dark-Green | - | - | Unknown | - | June into July | Nyikos, Frank | .2002 |
| 'Quiet Waters' | Medium | Med-Green | Marginal | White | Hybrid | - | - | Bisschop, Lynn | .2008 |
| 'Rippling Waters' | Large | Med-Green | - | - | Unknown | - | - | Wade, Van | --NR-- |
| 'Rosedale Water Spout' | - | - | - | - | Duplicate | - | - | Duplicate Name | --NR-- |
| 'Rosedale Watersprout' | Medium | Dark-Green | Medial | White | Unknown | Pale-Lavender | June into July | Hadrava, Jerry | --NR-- |
| 'Rosedale Waterwheel' | Large | Med-Green | Marginal | White | Hybrid | Light-Purple | July | Hadrava, Jerry | .2000 |
| 'Rough Waters' | Large | Blue/Green | - | - | Hybrid | Near-White | June into July | Armstrong, Maxine | .1969 |
| 'Sky Blue Waters' | Large | Blue/Green | Marginal | Yellow | Hybrid | Light-Purple | July into August | Elslager, Ed | .2005 |
| 'Still Waters' | Medium | Blue/Green | - | - | Hybrid | - | June | Ward, Dr Dick & Ward, Jane | .2010 |
| 'Strong Water' | - | - | - | - | Duplicate | - | - | Duplicate Name | --NR- |
| 'Tidewater' | Large | Blue/Green | - | - | Hybrid | Med-Lavender | August | Zilis, Mark | .2003 |
| 'Troubled Waters' | | | | | Hybrid | | | Balitewicz, Bob | --NR-- |
| 'Valley's Dancing Water' | Medium | Med-Green | - | - | Hybrid | - | July into August | Linneman, Jeroen | .2009 |
| 'Valley's Waterfall' | Medium | Blue/Green | Streaked | White | Unknown | - | - | Linneman, Jeroen | --NR-- |
| 'Water Lily' | Large | Med-Green | - | - | Unknown | - | - | O'Harra, Russ | --NR-- |
| 'Water Wings' | Large | Yellow | - | - | Hybrid | Near-White | July | Van Ostrand, John | --NR-- |
| 'Watercolours' | Giant | Med-Green | Streaked | Speckles | Sport | Pale-Lavender | July into August | Sligh, Barry | .2000 |
| 'Waterford' | Large | Blue/Green | - | - | Hybrid | Near-White | June into July | Moldovan, Steve | .1983 |
| 'Watermark' | Large | Light-Green | Marginal | Yellow | Sport | Pale-Lavender | July into August | Van Eechaute, Danny | .2005 |
| 'Watermelon Pie' | - | - | - | - | Unknown | - | - | Unknown | --NR-- |
| 'Watermelon Rind' | Small | Dark-Green | - | - | Hybrid | - | - | Davis, Roy & Davis, Rhonda | --NR-- |
| 'Water's Edge' | Medium | Blue/Green | - | - | Unknown | - | - | Stegeman, Bev & Stegeman, Dave | --NR-- |
| 'Waterslide' | Medium | Blue/Green | - | - | Hybrid | Med-Lavender | August | Hansen, Hans & Walters Gardens | .2018 |
| 'Waterworks' | Small | Med-Green | Streaked | White | Hybrid | Light-Purple | July | Malloy, Alex | .2003 |
| 'Waukon Water' | Medium | Blue/Green | - | - | Unknown | Pale-Lavender | - | Axmear, Bob | --NR-- |
| 'Whitewater' | Miniature | Med-Green | Streaked | Speckles | Unknown | - | - | Tower, Alan | .2002 |
| 'Wright Falling Water' | Large | Yellow | - | - | Unknown | Pale-Lavender | July into August | Zolock, Steve & Zolock, Sarah | .2008 |
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