The table below presents the percentage allowable abstraction for each combination of environmental standard and sensitivity to abstraction, for the percentiles 0.1 to 99.9 (based on allowable percentage abstraction values at Q60, Q70 and Q95).
Environmental Standard | Sensitivity to abstraction | Q0.1 to Q59 & mean flow | Q60 to Q69 | Q70 to Q89 | Q90 to Q94 | Q95 to Q99.9 |
---|---|---|---|---|---|---|
High | Low | 10 | 10 | 10 | 10 | 5 |
High | Medium | 10 | 10 | 10 | 10 | 5 |
High | High | 10 | 10 | 10 | 10 | 5 |
High | No Data | |||||
Good | Low | 35 | 30 | 25 | 25 | 20 |
Good | Medium | 30 | 25 | 20 | 20 | 15 |
Good | High | 25 | 20 | 15 | 15 | 10 |
Good | No Data | |||||
Moderate | Low | 70 | 50-70 | 50-70 | 50 | 45 |
Moderate | Medium | 70 | 45-70 | 45-70 | 45 | 40 |
Moderate | High | 70 | 40-70 | 40-70 | 40 | 35 |
Moderate | No Data | |||||
Poor | Low | Qx less 25% of Q90 | Qx less 25% of Q90 | Qx less 25% of Q90 | 75 | 70 |
Poor | Medium | Qx less 30% of Q90 | Qx less 30% of Q90 | Qx less 30% of Q90 | 70 | 65 |
Poor | High | Qx less 35% of Q90 | Qx less 35% of Q90 | Qx less 35% of Q90 | 65 | 60 |