Date
BIG RIDEAU LAKE
UPPER RIDEAU LAKE
NEWBORO LAKE
OPINICON LAKE
SAND LAKE
CRANBERRY LAKE
COLONEL BY LAKE
High
Median
Low
High
Median
Low
High
Median
Low
High
Median
Low
High
Median
Low
High
Median
Low
High
Median
Low
01-Jan
123.40
123.10
122.85
124.18
124.04
123.89
121.89
121.82
121.55
118.55
118.48
118.29
115.86
115.72
115.65
98.60
98.30
98.10
88.71
88.48
88.30
15-Jan
123.40
123.10
122.85
124.18
124.04
123.89
121.82
121.70
121.46
118.48
118.37
118.16
115.86
115.72
115.65
98.60
98.25
98.04
88.71
88.48
88.24
01-Feb
123.40
123.10
122.85
124.18
124.04
123.89
121.74
121.59
121.37
118.40
118.25
118.03
115.86
115.72
115.65
98.60
98.20
97.96
88.71
88.48
88.16
15-Feb
123.53
123.25
122.70
124.30
124.10
123.58
121.80
121.59
121.28
118.46
118.25
117.91
115.86
115.72
115.65
98.45
98.15
97.90
88.71
88.48
88.10
01-Mar
123.65
123.35
122.60
124.40
124.20
123.58
121.86
121.59
121.28
118.53
118.25
117.91
115.86
115.72
115.65
98.30
98.10
97.90
88.71
88.48
88.10
15-Mar
123.75
123.45
122.60
124.52
124.29
123.58
121.92
121.67
121.28
118.60
118.34
117.91
115.97
115.78
115.65
98.50
98.22
97.90
88.71
88.52
88.10
01-Apr
123.90
123.58
122.60
124.65
124.38
123.58
122.00
121.77
121.28
118.67
118.45
117.91
116.10
115.85
115.65
98.70
98.37
97.90
88.71
88.57
88.10
15-Apr
123.90
123.70
122.60
124.65
124.47
123.58
122.06
121.86
121.28
118.74
118.55
117.91
116.10
115.92
115.65
98.70
98.52
97.90
88.71
88.62
88.10
01-May
123.95
123.85
123.20
124.65
124.56
124.06
122.12
121.95
121.80
118.80
118.65
118.40
116.10
115.98
115.82
98.70
98.65
98.20
88.78
88.66
88.38
15-May
123.95
123.85
123.80
124.65
124.65
124.55
122.12
122.05
122.00
118.80
118.75
118.70
116.10
116.04
116.00
98.70
98.65
98.50
88.78
88.70
88.65
01-Jun
123.95
123.85
123.80
124.65
124.65
124.52
122.12
122.05
122.00
118.80
118.75
118.70
116.10
116.04
116.00
98.70
98.65
98.40
88.78
88.70
88.65
15-Jun
123.95
123.85
123.75
124.65
124.65
124.49
122.12
122.05
122.00
118.80
118.75
118.70
116.10
116.04
116.00
98.70
98.60
98.32
88.78
88.70
88.65
01-Jul
123.95
123.80
123.65
124.65
124.65
124.46
122.12
122.05
122.00
118.80
118.75
118.70
116.10
116.04
116.00
98.68
98.56
98.24
88.78
88.70
88.65
15-Jul
123.95
123.75
123.55
124.65
124.65
124.43
122.12
122.05
122.00
118.80
118.75
118.70
116.10
116.04
116.00
98.66
98.52
98.15
88.78
88.70
88.65
01-Aug
123.95
123.70
123.45
124.65
124.65
124.40
122.12
122.05
122.00
118.80
118.75
118.70
116.10
116.04
116.00
98.64
98.48
98.06
88.78
88.70
88.65
15-Aug
123.95
123.65
123.35
124.65
124.65
124.37
122.12
122.05
122.00
118.80
118.75
118.70
116.10
116.04
116.00
98.62
98.44
97.98
88.78
88.70
88.65
01-Sep
123.95
123.60
123.25
124.65
124.65
124.34
122.12
122.05
122.00
118.80
118.75
118.70
116.10
116.04
116.00
98.60
98.40
97.88
88.78
88.70
88.65
15-Sep
123.80
123.45
123.15
124.54
124.54
124.31
122.12
122.05
122.00
118.80
118.75
118.70
116.10
116.04
116.00
98.60
98.36
97.80
88.78
88.70
88.65
01-Oct
123.65
123.25
123.00
124.44
124.44
124.28
122.12
122.05
122.00
118.80
118.75
118.70
116.10
116.04
116.00
98.60
98.33
97.89
88.78
88.70
88.65
15-Oct
123.54
123.10
122.85
124.34
124.34
124.18
122.12
122.05
121.88
118.80
118.75
118.60
116.10
116.04
115.91
98.60
98.30
97.99
88.78
88.70
88.53
01-Nov
123.40
123.10
122.85
124.23
124.23
124.08
122.12
121.93
121.76
118.80
118.61
118.49
116.10
115.93
115.82
98.60
98.30
98.10
88.78
88.58
88.41
15-Nov
123.40
123.10
122.85
124.18
124.14
123.98
122.00
121.82
121.66
118.68
118.48
118.38
115.97
115.83
115.74
98.60
98.30
98.20
88.71
88.48
88.30
01-Dec
123.40
123.10
122.85
124.18
124.04
123.89
121.89
121.82
121.55
118.55
118.48
118.29
115.86
115.72
115.65
98.60
98.30
98.20
88.71
88.48
88.30
15-Dec
123.40
123.10
122.85
124.18
124.04
123.89
121.89
121.82
121.55
118.55
118.48
118.29
115.86
115.72
115.65
98.60
98.30
98.10
88.71
88.48
88.30
Big Rideau Chart Datum*:
Upper Rideau Chart Datum*:
Newboro Lake Chart Datum*:
Opinicon Lake Chart Datum*:
Sand Lake Chart Datum*:
Cranberry Lake Chart Datum*:
Colonel By Lake Chart Datum*:
123.1 metres ASL
124.0 metres ASL
122.0 metres ASL
118.7 metres ASL
116.0 metres ASL
97.7 metres ASL
88.6 metres ASL
* Chart datum is the low water level of the lakes and rivers. It is established such that the water level will be above chart datum 95% of the time during navigation season
Data supplied by Kerry McGonegal, Rideau Canal Office, Parks Canada
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