Minimum environmental demands by the Montana Method (Liu et al. 2016)
| Percent of average annual flow . | Flow category or habitat quality in the river . | |
|---|---|---|
| October–March | April–September | Optimal condition |
| 40 | 60 | Outstanding |
| 30 | 50 | Excellent |
| 20 | 40 | Good |
| 10 | 30 | Moderately degraded |
| 10 | 10 | Poor |
| 10 < | 10 < | Highly to severely degraded |
| Percent of average annual flow . | Flow category or habitat quality in the river . | |
|---|---|---|
| October–March | April–September | Optimal condition |
| 40 | 60 | Outstanding |
| 30 | 50 | Excellent |
| 20 | 40 | Good |
| 10 | 30 | Moderately degraded |
| 10 | 10 | Poor |
| 10 < | 10 < | Highly to severely degraded |