| Area | Value |
|---|---|
| 1. Dudley Park (WA) | 4.5m/sec |
| 2. Lakelands (WA) | 4.2m/sec |
| 3. Erskine (WA) | 4.0m/sec |
| 4. Coodanup | 3.9m/sec |
| 5. Dawesville | 3.9m/sec |
| 6. West Pinjarra | 3.9m/sec |
| 7. Bouvard | 3.9m/sec |
| 8. Silver Sands | 3.9m/sec |
| 9. South Yunderup | 3.9m/sec |
| 10. Stake Hill | 3.9m/sec |
| 11. Wannanup | 3.9m/sec |
| 12. Barragup | 3.9m/sec |
| 13. Falcon | 3.9m/sec |
| 14. Furnissdale | 3.9m/sec |
| 15. Greenfields | 3.9m/sec |
| 16. Halls Head | 3.9m/sec |
| 17. Herron | 3.9m/sec |
| 18. Madora Bay | 3.9m/sec |
| 19. Mandurah | 3.9m/sec |
| 20. Meadow Springs | 3.9m/sec |
| 21. Nambeelup | 3.9m/sec |
| 22. North Dandalup | 3.9m/sec |
| 23. North Yunderup | 3.9m/sec |
| 24. Pinjarra | 3.9m/sec |
| 25. Coolup | 3.8m/sec |