Weekly Water Level Bulletin

  For the week ending:  13/04/2026

  SUPERIOR     HURON      ST CLAIR      ERIE     ONTARIO   MONTREAL
                                         PORT
 THUNDER BAY  GODERICH   BELLE RIVER   STANLEY   KINGSTON  JETTY NO.1

 Last daily mean available
    183.17     176.37      175.05       174.27     75.02       6.74

 Latest weekly mean
    183.18     176.31      175.07       174.24     74.99       6.77

 Highest water level during the week
    183.26     176.51      175.20       174.42     75.11       6.98

 Lowest water level during the week
    183.08     176.15      174.98       174.03     74.91       6.61

 Latest weekly mean relative to chart datum
    - 0.02     + 0.31      + 0.67       + 0.74    + 0.79     + 1.58

 Change from previous weekly mean
    + 0.04     + 0.06      + 0.09       + 0.07    + 0.11     + 0.48

 Change from last year's weekly mean
    + 0.10     - 0.02      - 0.10       - 0.11    + 0.25     - 0.40

 Elevations are in metres above IGLD (1985)

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