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).
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Historical Data: the above data is available in tabular and chart format for the years:
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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 2025
11 Aug 2025 - Level is at 133.96 MASL, virtually unchanged from last week.
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04 Aug 2025 - Level has decreased to 133.99 MASL
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28 Jul 2025 - Level is down very slightly to 134.04 MASL.
21 July 2025 - Level is down again, now at 134.09 MASL.
14 July 2025 - Level is back above the lower target. Now at 134.13 MASL.
7 July 2025 - Level is down below lower target. Now at 134.07 MASL.
23 June 2025 - Level is down a tad, now at 134.14 MASL.
9 Jun 2025 - Level has dropped; now at 134.18 MASL.
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27 May 2025 - Level has dropped a bit more; now at 134.32 MASL.
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12 May 2025 - Level has dropped slightly; now at 134.40 MASL.
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5 May 2025 - Levels are still dropping now at 134.42 MASL.
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28 Apr 2025 - Levels are dropping steadily; now at 134.58 MASL.
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14 Apr 2025 - Flows and levels appear to have peaked. Level now at 134.91 MASL.
7 Apr 2025 - Flows and levels have risen rapidly; level now at 134.89 MASL.
31 Mar 2025 - With the recent cold weather, the level has dropped; now at 134.62 MASL.
24 Mar 2025 - Flows and levels are rapidly rising; level now at 134.84 MASL.
17 Mar 2025 - Flows and levels are rising; the beginning of the Spring freshet. Now at 134.31 MASL
10 Mar 2025 - Level up a bit more; now at 134.18 MASL.
3 Mar 2025 - Level up a wee bit; now at 134.17 MASL.
24 Feb 2025 - Level is unchanged; still at 134.15 MASL
17 Feb 2025 - Level is up a tad to 134.15 MASL.
10 Feb 2025 - Level is holding pretty steady at 134.11 MASL.
3 Feb 2025 - Level is down a bit; now at 134.12 MASL.
20 Jan 2025 - Level is holding, now at 134.20 MASL.
15 Jan 2025 - Level is up a bit at 134.22 MASL
30 Dec 2024 - Level is holding at 134.18 MASL.