BGA - Observation Point (0)
| BGA Level 1 - Decreasing |
| BGA Level 1 - Increasing |
| BGA Level 1 - Steady |
| BGA Level 1 - Unknown |
| BGA Level 2 - Decreasing |
| BGA Level 2 - Increasing |
| BGA Level 2 - Steady |
| BGA Level 2 - Unknown |
| BGA Level 3 - Decreasing |
| BGA Level 3 - Increasing |
| BGA Level 3 - Steady |
| BGA Level 3 - Unknown |
| Black Water |
| Fish Death |
BGA - Observation Line (1)
| BGA River Safe |
| BGA River Caution |
| BGA River Declared |
| Black Water |
BGA - Observation Area (2)
| BGA Declared Waterbody |
| Caution - Potential BGA outbreak |
| Subject to BGA outbreak |
|