Water Clarity

Water Quality Data - Depth Clarity and Phosphorus Levels

Year

Mean Secchi Depth

ug/Litre Phosphorus

Lake Condition

1997

3.2 metres

12.0

Mesotropic

1998

2.9 metres

14.3

Eutrophic

1999

2.6 metres

11.2

Eutrophic

2000

3.1 metres

8.0

Mesotropic

2001

3.2 metres

16.0

Mesotropic

2002

2.8 metres

14.4

Eutrophic

2003

2.93 metres @ 3 Mile
2.85 @ Pickerel Bay

No data

Eutrophic

2004

2.82 metres @ 3 Mile
2.92 @ Pickerel Bay

No data

Eutrophic

Trophic States

Oligotrophic   

Clear waters with little organic matter or sediment and minimum biological activity.

Mesotrophic 

Waters with more nutrients, and therefore, more biological productivity.

Eutrophic

Waters extremely rich in nutrients, with high biological productivity.   Some species may be choked out.

Hypereutrophic

Murky, highly productive waters, closest to the wetland status.   Many clearwater species cannot survive.

Dystrophic

Low in nutrients, highly coloured with dissolved humicorganic material.  (Not necessarily a part of the naturaltrophic progression.)