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Lake Water Levels

The above chart provides a weekly 'snapshot' of water levels on Mississippi Lake.


During periods of rapid change in water levels (spring runoff or severe storms) the chart may be updated at more frequent intervals. Throughout most of the year, the levels should track within the target range (black lines). During the spring runoff, there is no target range due to the variability in timing of spring melt and ice conditions.  Through most of the summer we would expect to see a gradual decline in levels (within the target range).

Historical Data:  the above data is available in tabular and chart format for the years:

                              2016, 2017, and 2018

                              2019, 2020, and 2021

                              2020, 2021, and 2022

The Mississippi Lake water level chart is produced by MLA, using information gathered by the Mississippi Valley Conservation Authority (MVCA).  Here are direct links to the MVCA website for additional information regarding the entire Mississippi River Watershed:


FLOOD WARNING information.  It is important to note that severe storms, with subsequent heavy rainfall, may result in fairly rapid increases in water levels.  Consult the MVCA for detailed information and guidance regarding flooding conditions;

Water Levels elsewhere in the Watershed. MVCA tracks lake levels and stream flow throughout the watershed. 


Mailing Lists to subscribe directly to MVCA for information regarding a variety of topics.

Notes for 2023

5 June 2023


29 May 2023


22 May 2023


15 May 2023


8 May 2023



6 May 2023

1 May 2023


24 Apr 2023


17 Apr 2023

10 Apr 2023

3 Apr 2023


27 Mar 2023


20 Mar 2023


13 Mar 2023


6 Mar 2023


27 Feb 2023


20 Feb 2023


15 Feb 2023


6 Feb 2023


30 Jan 2023


24 Jan 2023


20 Jan 2023


9 Jan 2023


1 Jan 2023




Lake Level is still dropping, below target and average. Now at 134.14 MASL.


Lake level is still dropping; now at 134.34.MASL.


The lake level is dropping rapidly and is within the summer target range; now at 134.49 MASL.


The lake peaked on May 8 (135.05 MASL) and level is dropping; now at 134.82 MASL.


Flows have started to decrease and the Lake level seems to be near it's peak; now at 135.05 MASL.


I know it's not Monday, but I felt an update was appropriate. The Lake level has increased 36 cm since Monday. Flows are still increasing, so the level should come up some more before it peaks


Flows and levels still dropping, now at 134.62 MASL. The recent rainfall may bring levels up a bit.


Flows and levels are dropping rapidly. Lake level now at  134.83 MASL


It looks like the lake level has peaked; now at 135.17 MASL.


Levels are rising rapidly; now at 135.01 MASL. MVCA does not anticipate flooding on Mississippi Lake at this time, but things could change with higher temperatures in the forcast.


The Spring freshet has begun; level has risen to 134.44 MASL.


Level has come up a bit to 134.29 MASL.


Level is holding at 134.22 MASL.


Level is down a tad to 134.22 MASL.


Level is down a bit more; now at 134.24 MASL.


Level is down a bit; now at 134.28 MASL.


Level is up some more; now at 134.32 MASL.


Level is up a bit. Now at 134.25 MASL.


Lake level is down to target range. Now at 134.21 MASL.


Lake Level is down some more, but still well above average. Now at 134.30 MASL.


Lake level is down a bit more; now at 134.37 MASL.


Lake level has settled down a bit. Gauge is now working, level is 134.41 MASL.


Lake level is up quite a bit; now at 134.60 MASL.


Lake level is up with all the rain. Starting a new year, the chart does not show a single point, so I have placed a RED bullet on the new level; 134.33 MASL.


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