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Lake Ontario

NOAA Releases New Poster of Lake Ontario Floor

A new color poster depicting features on the floor of Lake Ontario has been released by the Commerce Department's National Oceanic and Atmospheric Administration (NOAA). This is the third Great Lake to be depicted with new, highly detailed bathymetry, following Lakes Michigan and Erie. In addition to the main map, insets show details of bottom relief in part of the Rochester Basin, and in the vicinity of Charity Shoal. Also included are text explaining the geology and geomorphology of the main lake floor features, and a list of references. The bathymetry was produced with data from the entire historic hydrographic sounding database from the United States and Canada. Many earlier interpretations of Lake Ontario geomorphology are confirmed by the new bathymetry; and new ideas have emerged that have significant implications for a number of environmental concerns. Certain ridges on the floor of the Rochester Basin may record flow direction of advancing ice and/or subglacial meltwater. In addition, a small circular depression coincides with the feature referred to as Charity Shoal. Although the origin of the feature remains unknown, it bears a "striking" resemblance to a simple impact crater. Data and imagery from Lake Ontario bathymetry are ready for incorporation into geographic information systems as base layers for various applications

Great Lakes Windfarm Project Shelved

A new state blueprint presents a preference to focus wind farm developments off the Rockaways, in New York City, not the Lakes. The Cuomo administration, which last year scuttled as too expensive a plan to construct the nation’s first wind energy farm in the Great Lakes, is putting its offshore focus in an area 15 miles into the Atlantic Ocean off New York City., reports The Buffalo News. Now questions are arising about whether Lake Erie and Lake Ontario will ever be tried

St. Lawrence Seaway Draft

The Great Lakes-St. Lawrence Seaway System issued a Notice stating that, effective May 24, the maximum allowable draft in the Montreal to Lake Ontario section will be increased to 80.8 dm (26’ 06”), subject to favorable water elevations. The draft increase will be for all inland ships and for ocean ships equipped with an operational bow thruster. For ocean ships not equipped with bow thrusters, the maximum allowable draft will be 80.0 dm (26’ 03”). Seaway Notice No. 10 of 2004 (HK Law)

St. Lawrence Seaway: 2012 - Notice to Shipping (# 18)


Maisonneuve Region; Montreal / Lake Ontario Section. Maintenance / Repair Work at Eisenhower Lock: Maintenance / repair work will be performed at Eisenhower Lock beginning on August 27, 2012 for a period of approximately 5 days. During this period, the north side filling valve will be out of service resulting in a slightly longer time to raise a vessel in the lock.    

Today in U.S. Naval History: May 30

Today in U.S. Naval History - May 30 1814 - Navy gunboats capture three British boats on Lake Ontario near Sandy Creek, N.Y. For more information about naval history, visit the Naval History and Heritage Command website at

Today in U.S. Naval History: August 8

Today in U.S. Naval History - August 8 1813- U.S. Schooners Hamilton and Scourge founder in storm on Lake Ontario 1959 - Announcement of Project Teepee, electronic system to monitor 95 percent of earth's atmosphere for missile launchings or nuclear explosions. System developed by William Thaler, Office of Naval Research physicist. 1972 - Women authorized for sea duty as regular ship's company For more information about naval history

Seaway's Shipping Season to Open March 31

The Montreal to Lake Ontario and Welland Canal sections of the St. Lawrence Seaway will open for navigation at 8:00 a.m., March 31, according to an announcement made by the St. Lawrence Seaway Development Corp. (SLSDC). SLSDC administrator Albert S. Jacquez said, "This year's opening is especially significant because 1999 also happens to be the 40th anniversary of the dedication of the St. Lawrence Seaway at ceremonies in 1959, involving President Dwight D. Eisenhower and Queen Elizabeth II

Great Lakes, Seaway 2010 Navigation Season

The Great Lakes-St. Lawrence Seaway Corporation announced the opening of the 2010 navigation season, scheduled to take place on the following dates and times: • Montreal / Lake Ontario, March 25, 2010 - 0800 hours (D.S.T.) • Welland Canal, March 25, 2010 - 0800 hours (D.S.T.) Vessel transits will be subject to weather and ice conditions. Restrictions may apply in some areas until lighted navigation aids have been installed.

American MetalCraft Marine Sponsors Seaway Day

Photo courtesy MetalCraft Marine

Sailing Seaway Clayton presented by Davidson Auto Group and Lake Ontario Realty announced that American MetalCraft Marine of Clayton, New York has been named title sponsor of Seaway Day on Saturday, June 18. American MetalCraft Marine Seaway Day will feature tall ship Lynx, along with local vessels on display including tugboat Bowditch and former military landing vessels Thors Hammer and Maple Grove. The day will be capped off with a live performance by Bad Husbands Club at 7 p.m

St. Lawrence Seaway Opening Date Pushed Back

Tthe opening date for the St. Lawrence Seaway 2015 navigation season has been delayed following review and consideration of factors and conditions affecting safe navigation and effective system transit. The new opening date is scheduled for: Montreal / Lake Ontario: April 2,2015-0800 hours(D.S.T.) Welland Canal: April 2, 2015 -0800 hours (D.S.T.) Vessel transits will be subject to weather and ice conditions.

Walk-through Lockages at Iroquois Lock - Montreal / Lake Ontario

locks on the St. Lawrence

  Mariners are reminded that during a walk-through lockage at Iroquois Lock: • The vessel must maintain contact with the lock on marine VHF channel 17 during the entire lockage. The vessel may leave channel 17 only after having left the lock.

Great Lakes Limestone Trade Up 4% in August

Shipments of limestone from U.S. and Canadian quarries on the Great Lakes totaled 3.9 million tons in August, an increase of 4 percent compared to a year ago, and even more, 10 percent, when compared to the month’s long-term average, according to the Lakes Carriers’ Association (LCA)

World Carbon Debate Must Consider Great Lakes Shipping

CSL Groups Trillium Class vessel Thunder Bay, pictured here in Port Colborne, Ontario, regularly travels through the St. Lawrence Seaway to Great Lakes ports. (Photo: Thies Bognor; Supplied by CSL Group)

As the debate continues both at home and abroad on carbon offsetting measures, the Chamber of Marine Commerce is urging stakeholders and governments to consider the environmental advantages and the competitive challenges faced by the Great Lakes-St. Lawrence shipping industry.  

USCG, RCAF to Conduct Joint Training

A Royal Canadian Air Force CH-146 Griffon helicopter taxis past a U.S. Coast Guard Air Station Traverse City MH-65D Dolphin helicopter after joint training operations

  The crew of Coast Guard Air Station Traverse City is hosting an international joint search-and-rescue exercise with members of the Royal Canadian Air Force beginning Tuesday in and around the Traverse City area. The Royal Canadian Air Force's 424th Transport and Rescue Squadron based at

Last Saltie Departs Duluth; Lakers Make Final Push

The Palmerton departing beneath Duluth’s Aerial Bridge on Dec. 20.  Photo Credit:  Paul Scinocca

Duluth-Superior’s international shipping season winds to a close as last saltie departs; Great Lakes freighters make final push to mid-January   This weekend signaled the ‘beginning of the end’ of the 2014 shipping season – as the last oceangoing vessel (saltie) to

US, Canadian Coast Guard Icebreaking Underway

The crew of Coast Guard Cutter Neah Bay, homeported in Cleveland, works to keep the CSL Laurentien moving during an escort in eastern Lake Erie March 27, 2014. The crew experienced plate ice as thick as three feet and ice ridges as tall as eight feet. (U.S. Coast Guard photo courtesy of CSL Laurentien)

The U.S. and Canadian Coast Guards have begun collaborative icebreaking operations.   The U.S. and Canadian Coast Guards have commenced Operation Coal Shovel seasonal domestic ice breaking operations in the southern part of Lake Huron, Lake St. Clair, the St

Video: Coastguards Continue Great Lakes Icebreaking

Image: USCG

Continued icebreaking operations from the U.S. and Canadian Coast Guards open maritime lanes for commercial vessels The U.S. and Canadian Coast Guards are jointly continuing Operation Coal Shovel, the seasonal domestic icebreaking operations in the southern part of Lake Huron, Lake St

Ice Coverage on Great Lakes 89 pct: NOAA

Image: National Oceanic and Atmospheric Administration

 Ice coverage on the Great Lakes is nearing 90 percent, reveals high resolution satellites images from National Oceanic and Atmospheric Administration (NOAA).   The entire Great Lakes is at 88.8 percent ice coverage, with the highest totals coming from Lake Huron and Lake Erie at about

USCG Conducting Ice Flushing Operations

 The crew of the Coast Guard Cutter Bristol Bay conducts ice-flushing operations in the St. Clair River, Thursday, March 26, 2015. Ice flushing operations help keep brash ice from forming and encourages the flow of ice down river preventing possible flood situations. U.S. Coast Guard video by USCGC Bristol Bay.

  The Coast Guard cutter fleet is flushing ice through the Great Lakes river systems to prevent ice jams and facilitate commercial shipping as the shipping season begins and the ice on the Great Lakes dissipates.   Ice breaking operations, above freezing-temperatures

USCG Flush Ice down River Systems to Facilitate Shipping

courtesy USCG

  The Coast Guard cutter fleet is flushing ice through the Great Lakes river systems to prevent ice jams and facilitate commercial shipping as the shipping season begins and the ice on the Great Lakes dissipates. Ice breaking operations, above freezing-temperatures

Great Lakes Losing Ice

Great Lakes Ice Cover: Picture Credit: Great Lakes Environmental Research Laboratory

 The Great Lakes Environmental Research Laboratory reports ice cover for all of the Great Lakes combined at around 52%, thanks to milder temperatures and gusty winds over the past several weeks.   On March 1, nearly 89 percent of the Great Lakes were covered in ice

Low Water Levels on Lake St-Louis


  Mariners are advised that due to low water levels on Lake St-Louis the speed limit between buoys A30 and A40 is reduced as follows:  *  Vessels with a draft greater than 70 dm are limited to 10 knots upbound and 12 knots downbound.

Busy Season for Seaway

Port of Thunder Bay, the largest grain port on the Great Lakes, reported that its grain shipments were off to the strongest start this season

  Grain shipments through the St. Lawrence Seaway are up 7 per cent this season, continuing the pace set last year when ships carried the largest volume of grain through the navigation system in 14 years. According to The St. Lawrence Seaway Management Corporation

Great Lakes Towing Company Adds 4 Harbor Tugs

Tug Michigan (Photo: Great Lakes Towing Company)

The Great Lakes Towing Company, which operates the largest fleet of shipdocking tugboats on the U.S. Great Lakes-Saint Lawrence Seaway, has announced the addition of four more tugboats to its fleet. The four newly purchased tugs will be named after four of the Great Lakes; Tug Michigan

New Bank Lighting Montreal - Lake Ontario

New Bank Lighting in South Shore Canal

  A bank lighting renewal program from Montreal to Lake St Louis on the northern side of the dike will begin this fall. The project will be starting at the northern extremity of the dike (Montreal Harbor) towards St Lambert lock this winter and will be continuing up to Lake St Louis in

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