| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:03.84 | Border City Invitational 2025 | 2025-12-05 |
| 100m Breaststroke | 1:30.56 | GHAC Fall Invitational SCM | 2025-11-21 |
| 100m Butterfly | 1:14.81 | BAC SC Fall Invitational | 2025-11-07 |
| 100m Freestyle | 59.34 | Border City Invitational 2025 | 2025-12-05 |
| 100m IM | 1:14.44 | GHAC Fall Invitational SCM | 2025-11-21 |
| 200m Backstroke | 2:20.36 | Border City Invitational 2025 | 2025-12-05 |
| 200m Freestyle | 2:12.64 | Border City Invitational 2025 | 2025-12-05 |
| 200m IM | 2:45.01 | GHAC Fall Invitational SCM | 2025-11-21 |
| 400m Freestyle | 4:42.54 | Border City Invitational 2025 | 2025-12-05 |
| 400m IM | 5:43.09 | GHAC In-House Time Trial 200/400 IM | 2025-11-18 |
| 50m Backstroke | 30.33 | Border City Invitational 2025 | 2025-12-05 |
| 50m Freestyle | 27.12 | Border City Invitational 2025 | 2025-12-05 |
| 800m Freestyle | 10:06.27 | GHAC Fall Invitational SCM | 2025-11-21 |
Ouwehand, Leah's top personal bests include 100m Backstroke (1:03.84), 100m Breaststroke (1:30.56), 100m Butterfly (1:14.81), 100m Freestyle (59.34), 100m IM (1:14.44).
Ouwehand, Leah swims for Golden Horseshoe Aquatic Club.
Ouwehand, Leah has competed in 6 meets.