| Area | Value |
|---|---|
| 1. Dudley Park (WA) | 4.3m/sec |
| 2. Bouvard | 4.0m/sec |
| 3. Coodanup | 4.0m/sec |
| 4. West Pinjarra | 4.0m/sec |
| 5. Pinjarra | 4.0m/sec |
| 6. Silver Sands | 4.0m/sec |
| 7. South Yunderup | 4.0m/sec |
| 8. Stake Hill | 4.0m/sec |
| 9. Wannanup | 4.0m/sec |
| 10. Barragup | 4.0m/sec |
| 11. Dawesville | 4.0m/sec |
| 12. Falcon | 4.0m/sec |
| 13. Furnissdale | 4.0m/sec |
| 14. Greenfields | 4.0m/sec |
| 15. Halls Head | 4.0m/sec |
| 16. Herron | 4.0m/sec |
| 17. Lakelands (WA) | 4.0m/sec |
| 18. Madora Bay | 4.0m/sec |
| 19. Mandurah | 4.0m/sec |
| 20. Meadow Springs | 4.0m/sec |
| 21. Nambeelup | 4.0m/sec |
| 22. North Dandalup | 4.0m/sec |
| 23. North Yunderup | 4.0m/sec |
| 24. Erskine (WA) | 3.8m/sec |
| 25. Coolup | 3.6m/sec |