| Area | Value |
|---|---|
| 1. Dudley Park (WA) | 4.7m/sec |
| 2. Erskine (WA) | 4.3m/sec |
| 3. Lakelands (WA) | 4.2m/sec |
| 4. Coodanup | 4.1m/sec |
| 5. Dawesville | 4.1m/sec |
| 6. West Pinjarra | 4.1m/sec |
| 7. Bouvard | 4.1m/sec |
| 8. Silver Sands | 4.1m/sec |
| 9. South Yunderup | 4.1m/sec |
| 10. Stake Hill | 4.1m/sec |
| 11. Wannanup | 4.1m/sec |
| 12. Barragup | 4.1m/sec |
| 13. Falcon | 4.1m/sec |
| 14. Furnissdale | 4.1m/sec |
| 15. Greenfields | 4.1m/sec |
| 16. Halls Head | 4.1m/sec |
| 17. Herron | 4.1m/sec |
| 18. Madora Bay | 4.1m/sec |
| 19. Mandurah | 4.1m/sec |
| 20. Meadow Springs | 4.1m/sec |
| 21. Nambeelup | 4.1m/sec |
| 22. North Dandalup | 4.1m/sec |
| 23. North Yunderup | 4.1m/sec |
| 24. Pinjarra | 4.1m/sec |
| 25. Coolup | 3.7m/sec |