Description | Base flow regimes (% of original average flow in period) | |
---|---|---|
October-March | April-September | |
Flushing or maximum | 200 | 200 |
Optimum range | 60–100 | 60–100 |
Outstanding | 40 | 60 |
Excellent | 30 | 50 |
Good | 20 | 40 |
Fair or degrading | 10 | 30 |
Poor or minimum | 10 | 10 |
Severe degradation | 10–0 | 10–0 |