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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:  this is the data used to compile the above chart, updated to 2018, provided in tabular and chart format.

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 2020

23 nov 2020


9 Nov 2020


2 Nov 2020


26 Oct 2020


19 Oct 2020


12 Oct 2020


5 Oct 2020


28 Sept 2020


21 Sept 2020


14 Sept 2020


7 Sept 2020


1 Sept 2020


24 Aug 2020


17 Aug 2020


10 Aug 2020

3 Aug 2020

Level has come up a bit; now at 134.11 MASL.


Level has dropped a bit; now at 134.1 MASL.


Level has come up with the recent rain; now at 134.15 MASL.


Level has come up with all the rain; now at 134.09 MASL.


Level is holding at 134.02 MASL.


Level is holding at 134.01 MASL as MVCA begins to draw down lakes for the winter.


Level has dropped to 134.02 MASL, a little below average for this time of year.

Level has dropped to 134.06 MASL, just a bit below average for this time of year.

Level has dropped to 134.09 MASL; just about average for this time of year.


Level is slightly above average at 134.12 MASL.

Level is holding at 134.13 MASL.

With all the recent rain. the level has increased to 134.13 MASL.

Level is holding, now at 134.08 MASL.

Level is at 134.09 MASL, just about average for this time of year.

Level is up to 134.09 MASL; the rain has really helped.

Level has increased to 134.03 MASL; we finally got some rain!