| Interpretation table | ||||
| River health category | River Type | Ecological perspective | Water resource management perspective | |
| Sandy type river | Rock type river | |||
| Natural-A | >6.9 | >7.9 | No or negligible modification | Minimal human impact |
| Largely natural-B | >5.8 - 6.9 | >6.8 - 7.9 | Biodiversity and integrity are largely integral | Some human impact but ecosystem is integral/in good state |
| Moderately Modified-C | >4.9 - 5.8 | >6.1 - 6.8 | Sensitive species may be lost and possible dominance of tolerant or opportunistic species | Multiple disturbance associated with socio-economic development demands |
| Largely Modified-D | >4.3 - 4.9 | >5.1 - 6.1 | Dominated by tolerant species, alien species invasion and possible changes of biotic population dynamic. The system maybe reverted however | Unsuitable overexploitation of resource driven by increasing demography |
| Seriously Modified-E | ≤4.3 | ≤5.1 | Overall species dynamics modification at high intensity, impact is detrimental and may results to ecosystem. The system may be irreversible | Absolute and extensive resource exploitation. Resource no longer sufficient to supply ecological and ecosystem services |