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CHS crest       The Canadian Hydrographic Service
      Central and Arctic Region

GREAT LAKES WATER LEVELS


Monthly mean water level in metres referred to chart datum.

Lakes

 

Superior

Huron

St.Clair

Erie

Ontario

2009

January

-0.06 0.01 0.55 0.55 0.56
 

February

-0.10

0.01 0.55 0.57 0.62
 

March

-0.12

0.09 0.66 0.82 0.72
 

April

-0.07

0.20 0.74 0.92 0.92
 

May

0.05

0.34 0.80 0.96 0.99
 

June

0.10

0.41 0.85 0.95 0.96
 

July

0.14 0.44 0.84 0.92 0.92
 

August

0.19 0.44 0.80 0.85 0.83
 

September

0.21 0.37 0.73 0.74 0.58

October

0.16 0.29 0.59 0.63 0.40
 

November

0.15 0.27 0.53 0.57 0.30
 

December

0.10 0.22 0.47 0.52 0.28

2010

January

0.01 0.15 0.34 0.49 0.31

February

-0.06

0.11 0.04 0.42 0.34

March

-0.11 0.09 0.36 0.47 0.35

April

-0.12 0.11 0.49 0.59 0.46

May

-0.12 0.13 0.58 0.71 0.51

June

-0.07 0.20 0.67 0.82 0.65

July

-0.01 0.26 0.68 0.77 0.77

August

0.0 0.24 0.65 0.69 0.70

September

0.02 0.16 0.52 0.52 0.52

October

-0.01 0.07 0.45 0.47 0.41

November

-0.06 -0.04 0.32 0.38 0.30

December

-0.13 -0.14 0.31 0.36 0.32

2011

January

-0.08 -0.19 0.08 0.33 0.29

February

-0.27 -0.22 0.10 0.25 0.21

March

-0.33 -0.19 0.27 0.53 0.41

April

-0.29 -0.09 0.49 0.70 0.65

May

-0.16 0.1 0.75 0.96 1.03
June -0.05 0.21 0.82 1.08 1.13
July 0.05 0.26 0.81 0.98 0.94
August 0.08 0.24 0.76 0.88 0.74
September 0.03 0.13 0.24 0.80 0.56
October 0.01 0.08 0.62 0.77 0.46

November

-0.04 0.07 0.55 0.71 0.38

December

-0.11 0.04 0.08 0.90 0.42

2012

January

-0.19 -0.01 0.62 0.88 0.60

February

-0.26 -0.04 0.59 0.87 0.79

March

-0.27 0.00 0.55 0.86 0.77

April

-0.2 0.03 0.59 0.81 0.72

May

-0.14 0.05 0.58 0.77 0.71
June 0.00 0.07 0.58 0.72 0.70
July 0.10 0.04 0.54 0.64 0.59
August 0.07 -0.03 0.45 0.54 -0.34
September 0.00 -0.14 0.35 0.45 0.30
October -0.07 -0.26 0.21 0.33 0.14
November -0.09 -0.33 0.19 0.35 0.09
December -0.14 -0.39 0.14 0.32 0.08

2013

January -0.21 -0.43 0.12 0.32 0.18
February -0.24 -0.39 0.14 0.36 0.32
March -0.29 -0.37 0.24 0.42 0.38
April -0.28 -0.25 0.36 0.52 0.52
May -0.09 -0.07 0.44 0.60 0.68
June 0.06 0.05 0.59 0.73 0.90
July 0.17 0.09 0.85 0.94 0.66
August 0.24 0.08 0.62 0.78 0.79
September 0.28 0.04 0.56 0.66 0.59
October 0.25 0.01 0.45 0.57 0.42
November 0.20 -0.01 0.39 0.47 0.40
December 0.15 -0.03 0.39 0.44 0.33

2014

January 0.09 -0.04 0.29 0.50 0.44
February 0.04 -0.05 0.20 0.44 0.41
March 0.03 -0.05 0.39 0.49 0.35
April 0.07 0.06 0.56 0.70 0.63

May

0.27 0.27 0.73 0.85 0.94

June

0.40 0.38 0.81 0.90 0.97

July

0.46 0.46 0.86 0.90 0.89

August

0.47 0.48 0.86 0.87 0.76
September 0.5 0.51 0.86 0.81 0.58

October

0.51 0.54 0.78 0.75 0.39

 


Elevation of chart datum in metres referred to International Great Lakes Datum 1985

Lake

 

Superior

Huron

St.Clair

Erie

Ontario

Chart Datum IGLD 1985 183.2 176.0 174.4 173.5 74.2
Last Updated: 11/05/2014

Important Notices


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