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Water Levels

Current and comparative water levels -- Lake Ontario

Canada source: Current Water Levels Bulletin and Back Issues of the Bulletin

See also http://www.waterlevels.gc.ca/C&A/bulletin_e.html


USA Source: http://www.glerl.noaa.gov/data/now/wlevels/plots/ontario.gif

USA Source: http://www.glerl.noaa.gov/data/now/wlevels/plots/ont_lvl.gif

Historical levels:
Historical Lake Ontario water levels

Upstream

Recent related news

June 16 2012

REMEMBER LAST YEAR?

That was then.

The latest LAKE ONTARIO WATER LEVEL FORECAST now predicts relatively low water throughout the summer.

Which is to say, at least a foot lower than last summer through the end of July.

Overall the bad news persists: the big lakes upstream -- Lakes Huron and Superior -- are still far below long-term averages.

Water level forecast for Lake Ontario
Posted June 16 2012
Category: Water levels

January 30 2012

SURPRISE! You would think that a winter with negligible snow accumulation would have negative impacts for Lake Ontario Water Levels come springtime.

The latest LAKE ONTARIO WATER LEVEL FORECAST predicts higher than normal water levels into the summer.

This makes little sense because the big lakes upstream are still well below long-term averages.

Water level forecast for Lake Ontario
Posted January 30 2012
Category: Water levels

August 16 2011

WHAT GOES UP, it is said, must come down.

The latest LAKE ONTARIO WATER LEVEL FORECAST shows the extent to which Lake Ontrio levels have dropped since late spring.

Right now we are about the long term average.

As for the big lakes upstream, they are still well below long-term averages, but higher than predited earlier this year.

Water level forecast for Lake Ontario
Posted August 16 2011
Category: Water levels

May 20 2011

EPIC.

Posted May 20 2011
Category: Water levels

April 28 2011

ANTEDILUVIAN FORECASTS laid waste.

No surprise; the latest LAKE ONTARIO WATER LEVEL FORECAST is up sharply over what was predicted earlier this spring.

Right now we are about 8 inches higher, just above long-term average, and the outlook for the first half of the summer looks about 4 inches higher than forecast six weeks ago. That's great news.

Water level forecast for Lake Ontario

As for the big lakes upstream, no tangible change in their forecast levels; still well below long-term averages.

Posted April 28 2011
Category: Water levels

March 11 2011

As you might expect given recent rains, LAKE ONTARIO WATER LEVELS are up sharply.

The latest WATER LEVEL REPORT now shows insight into what to expect throughout the Summer: slightly higher levels than last year, and slightly higher than last December's forecast, but still about 5" below long-term averages.

Water level forecast for Lake Ontario

As for the big lakes upstream, their forecasts have been revised downward since we last looked; so bleaker.

Water level forecast for lakes Superior and Michigan-Huron
Posted March 11 2011
Category: Water levels

December 17 2010

The latest WATER LEVEL REPORT gives insight into what to expect come Spring.

Looks like, for the second year in a row, we'll be facing low water levels again.

But what's worse is the forecast for the big lakes upstream; that's not good at all.

Posted December 17 2010
Category: Water levels

August 5 2010

The latest WATER LEVEL REPORT from the US Army Corps of Engineers is up..

Levels are much better; we're at the the long-term average, still about 5" below last year at this time.

Posted August 5 2010
Category: Water levels

May 7 2010

REVISED DOWNWARD for May and June. Ouch!

Posted May 7 2010
Category: Water levels

April 26 2010

STILL BLEAK is the spring water level forecast.

Posted April 26 2010
Category: Water levels

March 7 2010

THE FORECAST for spring water levels remains bleak.

Posted March 7 2010
Category: Water levels

October 11 2009

THE EARLY FORECAST for next spring indicates lower-than-average levels for Lake Ontario.

Bear in mind this is the fourth year in a row that early forecasts predict low-water and it hasn't turned-out that way come springtime.

Posted October 11 2009
Category: Water levels

August 5 2009

LAKE ONTARIO WATER LEVELS are currently above average, almost exactly where they were last year at this time.

The good news is the big-lakes upstream are replenishing. You may recall that upper-lake levels were bleak back in 2007. Lake Superior was about 18" below average in August 2007 and Lakes Michigan and Lake Huron were about 23" below average in December 2007.

Lake Superior has been, for most of the summer, above last-year's levels, generally about 5 to 7" below its long-term average levels. Lakes Michigan and Huron are a full 5 to 10" above last summer's levels, and currently within 6" of long-term averages.

Lake Ontario Levels

More history in the K7 Water Levels topic.

Posted August 5 2009
Category: Water levels

March 16 2009

LAKE ONTARIO SPRING WATER LEVELS are looking good after a winter with lots of precipitation in the Great Lakes Basin.

That's good because last November's forecast was bleak. The latest forecasts are a full-foot above that.

If water levels matter to you, don't miss the International St. Lawrence River Board of Control public teleconference tomorrow (Tuesday) between 7:00-8:30 pm.

Lake Ontario Levels

Posted March 16 2009
Category: Water levels

November 28 2008

HOPE FOR A BRUTAL WINTER because, if current forecasts hold, we may be facing low water in the spring, about a foot lower than in recent years.

Lake Ontario Levels

Moreover the water-level news from the big-lakes upstream isn't great. Throughout most of 2008 water levels on Lake Superior were rebounding towards normal. Now that gap appears to be widening again.

Downstream from Lake Superior, Lakes Michigan and Huron are still a full 15-inches below normal levels.

Lake Ontario Levels

Posted November 28 2008
Category: Water levels

July 31 2008

WATER LEVELS ARE STILL ABOVE AVERAGE, about a foot above last year at this time, after peaking impressively in mid-May. Mid-summer  Lake Ontario Levels

The big news is upstream: Lake Superior water levels have rebounded remarkably since this time last year. Mid-summer  Lake Superior Levels

Posted July 31 2008
Category: Water levels

June 25 2008

AT THE KINGSTON PUBLIC HEARING of the International Board of Control, which was held Tuesday evening at City Hall, speakers expressed overwhelming support in favour of Plan B+.

Plan B+ is the lake water-level management scheme which would see generally more water retained in Lake Ontario, for longer periods, under a wide range of conditions, especially during fair weather seasons.

Call it "the keep more water here plan". It's also the plan computer models show as having the higher range of water levels -- the highest highs, but also the lowest lows -- during the boating season. It's also the plan favoured by many environmental groups.

But many who have built in places that prudence would never advise aren't keen on Plan B+. Some were here in Kingston City Hall on Tuesday night too.

Plan B+ and Plan 2007 compared under average and extreme high and low-water conditions.

Posted June 25 2008
Category: Water levels

May 16 2008

Posted May 16 2008
Category: Water levels

May 7 2008

IJC Plans

A PRIMER ON IJC PLANS is a new K7 page that shows how Lake Ontario water levels in two plans still under consideration by the International Joint Commission differ from the plan we've had for the past 50 years.

Posted May 7 2008
Category: Water levels

April 25 2008

IT'S BEEN A WHILE, likely since 1998, that we've had such high water on Lake Ontario.

High Lake Ontario water levels

Posted April 25 2008
Category: Water levels

February 29 2008

A Challenge from Collins Bay Marina

A CHALLENGE FROM COLLINS BAY MARINA in support of the International Water Levels Coalition (IWLC).

The IWLC is a citizens group that acts as a watchdog and advocate on water level issues to the International Joint Commission (IJC) and International St. Lawrence River Board of Control (ISLRBC).

The IWLC mission is tremendously important, but their membership, especially in Canada, is quite small. This year, Collins Bay Marina took steps to help expand that membership and strengthen their voice on our behalf.

The challenge is to other marinas and clubs to urge their members to support the IWLC.

We would like to challenge each marina, association, boating business and yacht club on the St. Lawrence River and Lake Ontario to mount a similar membership drive for the IWLC. Aware citizens, active in making our needs known to government, are the only route we have to protecting our waters, our recreation and our businesses.

Read the challenge and sign-up to become a IWLC member (Cost: $10).

Posted February 29 2008
Category: The environment

February 14 2008

LAKE ONTARIO WATER LEVELS are looking good again, especially considering all the snow on the ground in the Great Lakes basin.

Currently Lake Ontario levels are about average for this time of year, after a period of abnormally low water last fall.

The good news is Lake Ontario levels are 10-inches above predictions from three months ago.

The bad news: the big lakes upstream are still far below their seasonal averages. Lake Superior is 10-inches below average, and lakes Michigan and Huron are about 20-inches low. Lake Ontario Water Levels, February 2008 Upper Great Lake Water Levels, February 2008

Posted February 14 2008
Category: The environment

November 24 2007

A GLANCE AT LAKE ONTARIO WATER LEVELS tells us that sometime on Thursday November 22nd levels measured at Kingston dipped below chart datum.

Currently we're a full 2-feet below last year's levels.

Here is a historical graph of Great Lakes' water levels dating back to 1918. Here's the same data in tabular form. The last time Lake Ontario was below datum was in 1965, though we've been very close to chart-datum twice in the past 8-years.

Lake Ontario Water Levels, Nov 2007 Lake Ontario Water Levels, Nov 2007 Graph of historic Lake Ontario water levels
Posted November 24 2007
Category: Water levels

July 23 2007

It's been a while since we've featured the THE LATEST GREAT LAKES WATER LEVELS FORECAST by the US Army Corps of Engineers.

Lake Ontario levels are about six inches below normal for this time of year, so beware.

Posted July 23 2007
Category: The environment

April 29 2007

Seeing as boats are being launched across the region, THE LATEST GREAT LAKES WATER LEVELS FORECAST by the US Army Corps of Engineers predicts plenty of water. Currently we're above last season's max.

Posted April 29 2007
Category: Water levels

March 4 2007

THE LATEST GREAT LAKES WATER LEVELS FORECAST by the US Army Corps of Engineers shows that Lake Ontario water levels have dropped dramatically in the past month. Last month's levels forecast predicted little change through Spring. That's no longer the case.

Posted March 4 2007
Category: Water levels

February 6 2007

THE LATEST GREAT LAKES WATER LEVELS FORECAST by the US Army Corps of Engineers predicts plenty of water at the docks this spring, about a foot deeper than last year's levels.

Right now, when levels are normally at their lowest, levels are at last year's maximum.

More in the Water Levels topic.

Posted February 6 2007
Category: Water levels

November 18 2006

A GLANCE UPSTREAM AT WATER LEVELS IN THE GREAT LAKES shows that the big lakes, Superior and Michigan / Huron, continue to be notably below average. Lake Superior levels are approaching record lows for this time of year. Superior's November levels haven't been this low since the 1930's.

Posted November 18 2006
Category: Water levels

September 18 2006

UPPER GREAT LAKES WATER LEVELS ARE VERY LOW, and there's no relief in sight. Huron and Michigan are at their lowest levels since the 1960s and Lake Superior is at its lowest since 1926.

Posted September 18 2006

September 14 2006

THE WHIG REPORTS on the three options presented by the International Joint Commission for regulating Lake Ontario water levels. See the commission's 162 page report, including some fascinating annexes.

Lake Ontario Waterkeeper endorses Plan B+:

Plan B+ represents a favorable compromise between pre-dam ideal environmental conditions and human uses of the Lake and River waterways. LOW notes that this is the only candidate plan that is directed towards the goals of the study, that is improving the Lake and River ecosystem. By permitting a greater range of fluctuations, meadow marsh habitat in Lake Ontario will be significantly improved. Plan B+ does more than any other plan to address species at risk, with notable improvements to populations of least bittern, black tern, yellow rail, and king rail.
Posted September 14 2006

September 2 2006

LAKE ONTARIO WATER LEVELS PEAKED IN EARLY AUGUST and have since receded. This year's peak was about four inches below, and about three months later, than last years'. Upstream the big lakes -- Lakes Michigan, Huron and Superior, are at way below average levels.

Posted September 2 2006

August 15 2006

LAKE ONTARIO WATER LEVELS ARE UP, now about four inches above average. Upstream, Lake Superior is 10 inches below average, and Lakes Michigan and Huron are 20 inches below average water levels.

Posted August 15 2006

July 18 2006

Finally, after being notably low, Lake Ontario water levels are about normal for this time of year.

Posted July 18 2006

June 27 2006

As we approach July, Lake Ontario water levels are still about six inches below average, and about four inches below last year's level at this time. The forecast calls for levels to rise through July, when historically levels fall.

Posted June 27 2006

June 2 2006

The notable difference in Lake Ontario water levels between this year and 2005 is narrowing.

Posted June 2 2006
( Topic last updated: 2009.10.11 12:58:32 AM )