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.
This 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.
Notes for 2019
21 Apr 19 MVCA has issued a Flood Warning Update #2 for the watershed
20 Apr 19 Levels are very high at 135.36 MASL. This is nearly as high as 2014 (135.42 MASL) but still much below the 1998 peak of 135.73 MASL
MVCA has issued a Flood Warning Update #1 for the watershed
17 Apr 19 MVCA has upgraded its flood watch to a Flood Warning for Mississippi Lake
15 Apr 19 Levels are up sharply, now at 134.83 MASL.
MVCA has issued a Flood Watch statement for Mississippi Lake
8 April 19 Levels continue to increase, now at 134.6 MASL.
5 Apr 19 MVCA has issued a Water Safety Update #3 statement
4 Apr 19 Levels and flows are rapidly increasing; Lake Level now at 134.38 MASL.
2 Apr 19 MVCA has issued another Water Safety Update statement
29 Mar 19 MVCA has issued a Water Safety Update #2 statement
25 Mar 19 Levels and flows are increasing. Lake level now at 134.18 MASL.
19 Mar 19 Levels holding at 134.09 MASL. The warmer weather got postponed to this week.
MVCA has issued a Flood Outlook Update statement, valid until 27 Mar 19.
11 Mar 19 Lake levels have dropped to 134.09 MASL. We can expect levels to start to rise with the milder weather later this week.
5 Mar 19 MVCA has issued a Flood Outlook Statement, valid until 18 Mar 19.
4 Mar 19 Lake Levels are stable at 134.13 MASL.
25 Feb 19 Levels are stable at 134.12 MASL.
18 Feb 19 Levels are stable at 134.13 MASL.
13 Feb 19 Lake levels up a tad at 134.13 MASL
4 Feb 19 Lake levels stable at 134.11 MASL
28 Jan 19 Lake levels are stable at 134.10 MASL.
21 Jan 19 Lake levels are now within the target limits at 134.12 MASL
14 Jan 19 Lake levels have dropped to 134.21 MASL.
11 Jan 19 MVCA has issued a Water Safety Statement regarding frazil ice, valid until 15 Jan 19
7 Jan 19 Lake levels still high at 134.30 MASL.
Notes for 2018
31 Dec 18 Lake levels are still rising, up to 134.32 MASL.
27 Dec 18 Lake levels are up significantly after all the rain last week, now at 134.27 MASL.
17 Dec 18 Lake level is down a bit, now at 134.17 MASL.
10 Dec 18 Lake level is up to 134.19 MASL. Where was all this water when we needed it last summer?
03 Dec 18 Levels have risen sharply with all the rain and snow, now at 134.15 MASL
See MVCA Low Water Level Termination Notice
26 Nov 18 Levels have settled back to 134.01 MASL.
19 Nov 18 Levels rose with all the precipitation then settled back to 134.04 MASL.
5 Nov 18 Levels are up after all the rain; now at 134.04 MASL.
29 Oct 18 Levels are up a bit after the snow & rain; now at 133.99 MASL.
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.
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.
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?
MVCA issued a High Water Statement on 2 July 2017, and a 10 Jul 2017 update.
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
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.
for 2016 and earlier water level data, please proceed to our ARCHIVE page