Great Lake Water Levels Info

Great Lake Water Levels Info

I like to check Great Lake water levels.  With this season's (so far, at least) cold and snow things have improved dramatically.  Lake MI, for example, is about 14" above last January 3rd (see yellow highlighted area below)....and is only 3" below its normal level for that date. 

Of course, water levels will drop naturally until they historically rise in the summer.   Good news for us lake people....and certainly good news for water from real estate prospects. I think many of us were beginning to worry that water levels were on a continual decline.  Of course, one season does not make a long term trend but it is certainly welcome.

January 3, 2014
WEATHER CONDITIONS
The Great Lakes basin finished the month of December with below average precipitation except for the Lake Erie basin which received above average precipitation.  Temperatures fell on Monday of this week and remained below their seasonal averages throughout the week.  Southern portions of the basin received heavy snowfall on Wednesday and Thursday.  Further snow showers are possible on Saturday and Sunday for most of the basin.  Temperatures are expected to drop even lower to start next week with extremely frigid conditions expected for Monday and Tuesday.
LAKE LEVEL CONDITIONS
Lakes Superior and Michigan-Huron are 12 and 14 inches, respectively, above their levels of a year ago.  Lakes St. Clair, Erie, and Ontario are 14, 10, and 11 inches, respectively, above what they were at this time last year.  Over the next 30 days, lakes Superior, Michigan-Huron, and St. Clair are expected to drop 3, 1, and 1 inches, respectively.  Lake Erie is projected to remain near its current level over the next month while Lake Ontario is forecasted to rise 2 inches over the next month.  See our Daily Levels web page for more water level information.
FORECASTED MONTHLY OUTFLOWS/CHANNEL CONDITIONS
Lake Superior’s outflow through the St. Mary’s River is predicted to be near average for the month of January.  Lake Michigan-Huron’s outflow into the St. Clair River and the Lake St. Clair outflow into the Detroit River are also expected to be near average.  Likewise, the outflow of Lake Erie into the Niagara River and the outflow of Lake Ontario into the St. Lawrence River are projected to be near average in January.
ALERTS
Official records are based on monthly average water levels and not daily water levels.  Lake Michigan-Huron is below chart datum and expected to remain below datum over the next several months. Users of the Great Lakes, connecting channels and St. Lawrence River should keep informed of current conditions before undertaking any activities that could be affected by changing water levels.  Mariners should utilize navigation charts and refer to current water level readings.
SUPERIOR
MICH-HURON
ST. CLAIR
ERIE
ONTARIO
Forecasted Water Level for Jan 3, 2014 (feet)
601.44
577.26
573.62
571.00
244.75
Chart Datum (feet)
601.10
577.50
572.30
569.20
243.30
Difference from chart datum (inches)
+4
-3
+16
+22
+17
Difference from average water level for Dec 3, 2013 (inches*)
-2
-1
+3
+4
+2
Difference from average water level for Jan 3, 2013 (inches*)
+12
+14
+14
+10
+11
Difference from long-term monthly average of Jan (inches)
0
-14
0
+2
+2
Difference from highest monthly average of record for Jan (inches)
-15
-48
-38
-32
-22
Year of highest recorded monthly mean
1986
1987
1986
1987
1946
Difference from lowest monthly average of record for Jan (inches)
+19
+14
+38
+33
+31
Year of lowest recorded monthly mean
1926
1965
1936
1935
1935
Projected change in levels by Feb 3, 2014 (inches)
-3
-1
-1
0
+2
ALL DATA SHOWN IN THIS
Andrea Crossman

Andrea Crossman

Waterfront Specialists
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