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 451 1.000 0.000 0.989 0.000 Tidal freshwater 5 0.500 0.250 0.005 0.003 Sum At = 456 km2 - - 0.995 0.003 Primary symptoms level of expression value for the estuary: 0.50 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 451 0.250 1.000 0.250 0.247 0.989 0.247 Tidal freshwater 5 0.250 0.250 0.250 0.003 0.003 0.003 Sum At = 456 km2 - - - 0.250 0.992 0.250 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 0.995 0.50 Moderate High Macroalgal growth 0.003 SSM Dissolved oxygen 0.250 0.99 High Nuisance algal blooms 0.992 Toxic algal blooms 0.250