| Rank | Athlete | Year | Rounds | Strokes | Average |
| 1 | Ann Schnell | 2003-04 | 27 | 179 | 6.63 |
| 2 | Lindsey Sims | 2002-03 | 29 | 198 | 6.83 |
| 3 | Sayde Murray | 2005-06 | 24 | 168 | 7.00 |
| 4 | Lesley Stracks | 1993-94 | 16 | 114 | 7.13 |
| 5 | Tiffany Maurycy | 1989-90 | 20 | 147 | 7.35 |
| 6 | Erika Oldenkamp | 2005-06 | 24 | 182 | 7.58 |
| 7 | Ann Schnell | 2001-02 | 26 | 199 | 7.65 |
| 8 | Lindsey Sims | 1999-00 | 24 | 184 | 7.67 |
| 9 | Ann Schnell | 2000-01 | 27 | 208 | 7.70 |
| 10 | Misha Harvey | 2005-06 | 18 | 140 | 7.78 |