Key Points 2008-09

Of the 30 lakes monitored during 2008-09:

· 4 were graded as oligotrophic (low nutrients)

· 9 were mesotrophic (medium nutrients)

· 14 were eutrophic (high nutrients)

· 2 supertrophic (very high nutrients)

· 1 was graded hypertrophic (saturated)

· 2 lakes have declined in water quality since 2007-08 – Ngakapua North and Waipara (both are mesotrophic to eutrophic status)

· 1 lake has improved water quality since 2007-08 – Whakaneke (hypertrophic to eutrophic)

· Changes are most likely due to natural nutrient cycles in each lake