Overall level of expression of Eutrophic condition

1             High primary symptoms           0,6             Moderate primary symptoms           0,3             Low primary symptoms           0   0,3   0,6   1     Low secondary symptoms   Moderate secondary symptoms   High secondary symptoms

  Primary symptoms 

Zone Area(km2) (Az) Value(Vij) Az/At x Vij Chlorophyll a Macroalgal growth Chlorophyll a Macroalgal growth Mixing 156 0.500 0.000 0.114 0.000 Seawater 17.1 0.250 0.000 0.006 0.000 Tidal freshwater 511.6 1.000 0.000 0.747 0.000 Sum At = 684.7 km2 - - 0.867 0.000 Primary symptoms level of expression value for the estuary: 0.43 Moderate

  Secondary symptoms

Zone Area(km2) (Az) Value(Vij) Az/At x Vij Dissolved oxygen Nuisance algal blooms Toxic algal blooms Dissolved oxygen Nuisance algal blooms Toxic algal blooms Mixing 156 0.250 1.000 0.000 0.057 0.228 0.000 Seawater 17.1 0.000 0.000 0.000 0.000 0.000 0.000 Tidal freshwater 511.6 0.500 1.000 0.250 0.374 0.747 0.187 Sum At = 684.7 km2 - - - 0.431 0.975 0.187 Secondary symptoms level of expression value for the estuary: 0.98 High

  Synthesis

Indices Methods Parameters/ Values / EAR Index category Overall Eutrophic Condition (OEC) PSM Chlorophyll a 0.867 0.43 Moderate High Macroalgal growth 0.000 SSM Dissolved oxygen 0.431 0.98 High Nuisance algal blooms 0.975 Toxic algal blooms 0.187