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 310.1 0.500 0.000 0.456 0.000 Seawater 26.5 0.500 1.000 0.039 0.078 Tidal freshwater 3.4 0.250 0.250 0.003 0.003 Sum At = 340 km2 - - 0.498 0.080 Primary symptoms level of expression value for the estuary: 0.29 Low

  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 310.1 0.500 1.000 1.000 0.456 0.912 0.912 Seawater 26.5 0.250 1.000 0.250 0.019 0.078 0.019 Tidal freshwater 3.4 0.500 0 0 0.005 0 0 Sum At = 340 km2 - - - 0.481 0.990 0.932 Secondary symptoms level of expression value for the estuary: 0.99 High

  Synthesis

Indices Methods Parameters/ Values / EAR Index category Overall Eutrophic Condition (OEC) PSM Chlorophyll a 0.498 0.29 Low Moderate High Macroalgal growth 0.080 SSM Dissolved oxygen 0.481 0.99 High Nuisance algal blooms 0.990 Toxic algal blooms 0.932