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.
The following 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 2017, provided in tabular and chart format.
Important note: I have made a format change to give readers a better sense of how the present water levels compare with 2016, the last time we had comparible low water levels. To keep the chart from looking too busy, I have replaced the Historical Maximum line with 2016 water levels. This is the blue line on the chart.
Notes for 2018
22 Oct 18 Levels have dropped to 133.98 MASL.
15 Oct 18 Levels up a bit after the rain last week; now at 134.01 MASL.
8 Oct 18 Levels down a bit to 133.99 MASL
1 Oct 18 Levels holding at 134.0 MASL
24 Sept 18 The rain brought levels up a bit; now at 134.0 MASL.
17 Sept 18 Levels are holding at 133.96 MASL.
10 Sept 18 Levels still dropping; now at 133.96 MASL.
4 Sept 18 Rain brought the lake up a few cm, but then it dropped back to 133.97 MASL.
27 Aug 18 Rain early in the week brought the lake up to 134.0 MASL, but then it dropped back down; now at 133.97 MASL.
20 Aug 18 Levels still dropping; now at 133.97 MASL.
15 Aug 18 MVCA Minor Drought Update #2 Statement
13 Aug 18 Levels are still dropping, now at 133.98 MASL.
8 Aug 18 Levels are dropping again, now at 133.99 MASL.
3 Aug 18 MVCA Minor Drought Update # 1 Statement
30 July 18 Lake levels recovered somewhat from all the rain last week but are dropping again. After peaking at 134.06 MASL on July 26, they have dropped to 134.01 MASL.
27 July 18 The recent rain has brought levels up a bit (134.06 MASL) but flows are still low and we still need rain.
26 Jul 18 MVCA has issued an Update #1 to their Low Water Advisory
23 July 18 Levels are still dropping and very near historical lows; now at 133.97 MASL.
16 July 18 Levels are still dropping, now at 134.01 MASL.
9 July 18 Levels are still dropping, now at 134.04 MASL.
4 Jul 18 MVCA has issued a LOW WATER Advisory, effective until 16 Jul 2018.
2 July 18 Water level still dropping, now at 134.08 MASL. Did I say we need rain?
25 June 18 Water level still dropping, now at 134.12 MASL. We could use some rain!
18 June 18 Levels are a little below average for this time of year, now at 134.17 MASL
11 June 18 Levels are holding close to normal for this time of year, now at 134.22 MASL.
6 June 18 Levels are still dropping, although this rain will probably bring them up a bit. Now at 134.22 MASL.
28 May 18 Levels are still dropping; just a tad below average for this time of year at 134.29 MASL.
21 May 18 Levels are dropping; now in the target range at 134.46 MASL.
14 May 18 Lake levels are dropping, now at 134.65 MASL. This is still much higher than average for this time of year.
11 May 18 MVCA has terminated its Flood Watch and Flood Warning for the watershed.
7 May 18 Mississippi Lake peaked on May 3 at 135.09 MASL. It has been dropping steadily since then but problems with the MVCA lake guage have prevented getting an updated level. I estimate the lake is about 134.96 MASL. ***Gauge is fixed, level now at 134.96 MASL.***
30 Apr 18 Levels are rising rapidly; now at 135.01 MASL. MVCA expects lake to increase to between 135.2 and 135.25 MASL over the next two days.
28 Apr 18 MVCA has issued a Flood Warning Update #1
23 Apr 18 Levels are rising quickly; now at 134.66 MASL
17 Apr 18 Levels are up a bit; now at 134.44 MASL.
09 Apr 18 Levels rising slowly; now at 134.42 MASL
03 Apr 18 Levels are rising, now at 134.36 MASL.
26 Mar 18 Levels have dropped a tad, now at 134.20 MASL.
19 Mar 18 Levels have dropped some more; now at 134.28 MASL.
12 Mar 18 Levels have dropped a bit, now at 134.40 MASL
7 Mar 18 Levels are rising, now at 134.45 MASL
26 Feb 18 With the rain and mild weather, levels are rising; now at 134.35 MASL
19 Feb 18 Levels are stable at 134.17 MASL.
05 Feb 18 Levels holding at 134.24 MASL
29 Jan 18 Levels are stable at 134.24 MASL.
23 Jan 18 Levels are up a tad; now at 134.26 MASL.
15 Jan 18 Levels have increased sharply after the thaw and rain last week; now at 134.23 MASL.
9 Jan 18 Levels have dropped a bit in the past 2 weeks, now at 134.11 MASL.
Notes for 2017
27 Dec 17 Levels still dropping, now at 134.19 MASL.
20 Dec 17 Levels are still dropping, now at 134.23 MASL.
12 Dec 17 Levels are still dropping, now at 134.30 MASL.
4 Dec 17 Levels now down to 134.33 MASL.
27 Nov 17 Water levels are still declining; now at 134.38 MASL.
20 Nov 17 Water levels are slowly declining; now at 134.44 MASL.
13 Nov 17 Water levels have peaked and are now slowly declining; now at 134.50 MASL.
6 Nov 17 Water levels have increased 51 cm (20") in the last 8 days, now at 134.46 MASL.
1 Nov 17 MVCA has issued a Watershed Conditions Statement regarding recent rainfall
30 Oct 17 Levels have increased significantly with all the rain; now at 134.06 MASL
23 Oct 17 Levels continue to drop; now at 133.92 MASL.
16 Oct 17 Levels are down to 133.97 MASL; approaching the minimum target level for this time of year.
9 Oct 17 Levels have dropped to just below normal; now at 134.04 MASL
2 Oct 17 Levels have dropped to normal for this time of year; now at 134.08 MASL
26 Sept 17 Levels are still dropping; now at 134.11 MASL
18 Sept 17 Levels are still slowly dropping; now at 134.14 MASL
11 Sept 17 Levels are down a tad; now at 134.15 MASL
4 Sept 17 Levels continue to drop; now at 134.17 MASL
28 Aug 17 Levels continue to drop; now at 134.24 MASL
21 Aug 17 Levels are up a tad, now at 134.27 MASL
14 Aug 17 Levels continue to drop; now at 134.25 MASL.
8 Aug 17 MVCA has issued a Flood Watch Termination.
7 Aug 17 Levels have dropped to 134.30 MASL, getting closer to normal.
31 July 17 Levels are higher after all the rain last week, but have started to drop again, now at 134.46 MASL.
28 July 17 MVCA has issued a Flood Watch Update for Dalhousie Lake
24 July 17 Levels have dropped to 134.42 MASL. Let's hope we don't get all the rain predicted!
17 July 17 Levels peaked (again) July 15 and have started to drop; now at 134.55 MASL
12 July 17 MVCA issued a Flood Watch for Little Marble Lake and Dalhousie Lake
10 July 17 More rain and higher levels; up to 134.51 MASL. When will it end?
3 July 17 Just when everything was getting to normal conditions, we have had significant rainfall which has raised levels to 134.43 MASL.
26 June 17 Lake levels are close to average for this time of year, now at 134.29 MASL
19 June 17 Lake levels are slowly decreasing; now at 134.32 MASL.
12 June 17 Lake levels are holding steady at 134.47 MASL.
5 June 17 Lake levels are up a tad after all the rain; now at 134.47 MASL.
29 May 17 Lake Levels are still dropping, now at 134.45 MASL
22 May 17 Lake levels are still dropping, now at 134.75 MASL.
15 May 17 MVCA has issued a Flood Warning Termination, but advises that water levels will remain high for the next 7-10 days.
15 May 17 Levels peaked at 135.28 MASL on May 12 and have now dropped to 135.22 MASL. I have had many inquiries about how this compares
with previous years, so I have added a box (upper right) indicating this year's 2 peaks and peaks for the the 3 previous years with
12 May 17 MVCA has issued Flood Warning #3
9 May 17 MVCA has issued Flood Warning #2, quote: "Water levels on Mississippi Lake continue to climb and are expected to increase
another 10 to 20 cm before leveling off on Friday."
8 May 17 Water levels are up significantly, now at 134.97 MASL
7 May 17 MVCA has issued Flood Warning Update #1
6 May 17 MVCA has issued a Flood Warning as a result of continued significant rain fall.
2 May 17 MVCA has issued a Flood Outlook as a result of significant recent rainfall
1 May 17 Water levels are still dropping; now at 134.59 MASL.
25 Apr 17 View the MVCA Flood Watch Termination, issued 25 Apr 17
24 Apr 17 Water levels have dropped significantly, now at 134.83 MASL.
18 Apr 17 MVCA Flood Watch #4, quote: "Levels on Mississippi Lake are expected to continue to decline through the week"
17 Apr 17 Water levels peaked at 135.15 MASL on April 13; have now dropped to 135.11 MASL.
12 Apr 17 MVCA Flood Watch #3, quote: Water levels on Dalhousie and Mississippi Lake could increase by 10 to 15 cm over the weekend.
10 Apr 17 Levels are still rising and should peak in a few days; now at 135.03 MASL.
3 Apr 17 Levels are rising agin; now at 134.47 MASL.
27 Mar 17 Levels continue to drop, now at 134.39 MASL.
20 Mar 17 Levels have dropped to 134.47 MASL; not too surprising with the colder weather.
13 Mar 17 Levels are still rising, now at 134.65 MASL
6 Mar 17 Levels are rising rapidly, now at 134.59 MASL
27 Feb 17 Levels are rising due to recent rainfall; now at 134.32 MASL
21 Feb 17 Levels are holding at 134.22 MASL
6 Feb 17 Levels have dropped a bit to 134.17 MASL and are now in the target zone
23 Jan 17 Levels are holding at 134.27 MASL. MVCA has declared end of drought
16 Jan 17 Levels are now up to 134.28 MASL
9 Jan 17 All the recent precipitation has helped raise lake levels to 134.17 MASL
6 Jan 17 Lake levels have increased to 134.1 MASL
5 Jan 17 Watershed conditions have improved to Level I / Minor Drought levels.
View the latest MVCA Low Water Update #11, issued 5 Jan 2017.
Notes for 2016
27 Dec 16 Levels are holding at 134.05 MASL. Happy New Year everyone.
19 Dec 16 Levels have stabilized at 134.05 MASL. Merry Christmas everyone and all the best in the New Year.
12 Dec 16 Levels are up to 134.05 MASL, the highest the lake has been since mid-June
5 Dec 16 Levels are up to 134.02 MASL due to recent rain and snow
21 Nov 16 Levels are up a tad to 133.99 MASL
14 Nov 16 Levels have dropped to 133.96 MASL
7 Nov 16 Levels have dropped to 133.97 MASL
2 Nov 16 Levels are back down to 133.98 MASL
The SEVERE DROUGHT continues. View MVCA Low Water Update #8, issued 2 Nov 16.
24 Oct 16 Levels are up to 134.0 MASL due to all the rain this weekend
17 Oct 16 Levels are down to 133.96 MASL
Level III / SEVERE Drought conditions DEEPEN - View MVCA Low Water Update #7, issued 17 Oct 16.
10 Oct 16 Levels holding at 133.98 MASL
3 Oct 16 Levels holding at 133.98 MASL
29 Sep 16 We're still in SEVERE DROUGHT conditions. View MVCA Low Water Update #6, issued 29 Sep 16.
20 Sep 16 Levels up a bit to 133.98 MASL.
14 Sep 16 The SEVERE DROUGHT CONTINUES. View MVCA Low Water Update #5, issued 14 Sep 16
12 Sep 16 Levels up a tad to 133.97 MASL.
5 Sep 16 Levels have dropped to 133.96 MASL
29 Aug 16 Levels have dropped back to 133.98 MASL.
29 Aug 16 The drought continues, despite recent rainfall. View the latest MVCA Statement, Low Water Update #4, issued 25 Aug 16.
22 Aug 16 All the rain has helped get levels up to 134.01 MASL
16 Aug 16 Levels are up a bit to 134.0 MASL
11 Aug 16 View the latest MVCA Watersheds Statement regarding SEVERE DROUGHT conditions
8 Aug 16 Levels are holding at 133.97 MASL
2 Aug 16 Levels are holding at 133.97 MASL
26 July 16 View the latest MVCA Watershed Statement, issued 26 July, regarding the current drought.
25 July 16 Levels are back down to 133.97 MASL.
18 July 16 Levels are up a bit more.
11 July 16 For the 1st time this season water levels are up a tad (1 cm)
4 July 16 Water levels down a tad
30 June 16 Drought conditions persist. We need rain ! View the latest MVCA Watersheds Statement, issued 30 June.
27 June 16 Levels have dropped below historical levels for this time of year.
20 June 16 Levels have dropped to near historical lows. With little rain in the forecast, the situation will get worse before it gets better.
Please consult the latest MVCA Watersheds Statement regarding the current Drought Conditions
13 June 16 Levels are still dropping; not enough rain to help and little rain in the forecast. We need a lot of rain to bring levels back to normal.
6 June 16 Levels are near historic lows for this time of year. The rain yesterday should help bring levels up
30 May 16 Levels are still dropping and are well below target levels. We need substantial rainfall to bring flows and levels up
24 May 16 Levels are below average and almost down to last year's very low levels. Rain later this week should help.
16 May 16 Levels are below average but still above last year at this time
9 May 16 Levels are still dropping; we need rain!
2 May 16 Levels have dropped to the target range.
25 April 16 Levels and flows are dropping and are approaching target levels
18 April 16 Levels and flows are dropping
15 Apr 16 Flood watch termination
11 Apr 16 MVCA has issued update #3 to the Flood Watch
11 Apr 16 Lake Level peaked at 134.89 masl on April 7, 2016
7 Apr 16 MVCA has issued update #2 to the Flood Watch
5 Apr 16 MVCA has issued an update to the Flood Watch
4 Apr 16 MVCA has issued update #1 to the Flood Watch
3 Apr 16 MVCA has issued a Flood Watch for the Mississippi River system.