River Facts


The St. Lawrence River is one of the longest rivers in North America. And, is the outflow for the entire Great Lakes system. The Great Lakes hold nearly 20% of the world's fresh water.

The River flows 744 miles from Lake Ontario into the world's largest estuary, the Gulf of St. Lawrence. Only 114 miles of the River are located in New York State.

The River is 250 feet at its deepest point.

Flowing through both Canadian and US lands, the St. Lawrence River is a bi-national waterway, providing drinking water to local municipalities on both sides of the River and a vital tourism-based economy to local towns.

The St. Lawrence River has a discharge rate of 347, 849 cubic feet of water per second.

The Upper St. Lawrence is home to the Thousand Islands region. There are exactly 1,864. To be counted as an island, the piece of land must be surrounded by water, above water all year long, and support at least one tree.

For more information about the St. Lawrence River and Thousand Islands, visit:

  • Seaway Trail - The Seaway Trail is a National Scenic By-Way that leads tourists along the many historic and natural features of the St. Lawrence River and Lake Ontario in New York state.
  • Thousand Islands Photo Art - View the Thousand Islands with a birds-eye view through the photography of Ian Coristine.
  • Thousand Islands Life - An on-line magazine devoted to the history and culture of the Thousand Islands region.

Latest News

High Water! Rochester Democrat & Chronicle Says ‘Stop the blame game’
"It is time to stop playing the blame game," so says the Editorial Board in a June 24th editorial, referencing an article published the same day exhaustively examining the causes of this year's high water. The article, "High winds, high water, lots of hot air:Facts and fiction about Lake Ontario's Plan 2014", looks at all the accusations against the plan and concludes, "there is no proof whatsoever that the fault lies anywhere other than with nature." read more

High Water Level Cause? Answer from South Shore
A week ago we posted, "Nature plays the biggest role in water levels in the Lake Ontario-St. Lawrence River system," disputing the unfounded, but frequently made claim that the new water management plan - Plan 2014 - is to blame. Yesterday in a lengthy, well-sourced and comprehensive article the Rochester Democrat and Chronicle agreed. read more

Plan 2014 is the Right Plan for the St. Lawrence River
Unfortunately, even before it was unanimously approved by the International Joint Commission, a few elected officials and self-appointed spokespersons from the south shore of Lake Ontario began using “alternative facts” to block its approval and now its operation. read more

Agenda Set for Save The River’s 28th Winter Environmental Conference
Saturday, February 4, attendees of this annual conference focused on the health of the St. Lawrence River will hear from an influential and diverse group of speakers. read more

Interested in Plan 2014?
Then sign up for our Winter Environmental Conference, and hear from the International Joint Commission's Public Information Officer who has been there since before Plan 2014 (& its predecessors) was even a consideration. read more

Beach Watch Weekly Report: Week 9
Save The River Reports on Week 9 of Beach Watch Program Clayton, NY (August 31, 2016) – Save The River’s Beach Watch Program is in the process of monitoring popular summer swimming locations on the River from July 5th through August 29th on a weekly basis.  Save The River reports all samples collected on August 29th, […] read more

2016 Beach Watch: Week 7 Results
Save The River Reports on Week 7 of Beach Watch Program Clayton, NY (August 18, 2016) – Save The River’s Beach Watch Program is in the process of monitoring popular summer swimming locations on the River from July 5th through August 29th on a weekly basis.  Save The River reports all samples collected on August […] read more

Water Quality to be Tested at Popular Swimming Areas
Save The River’s annual summer Beach Watch Program will begin July 5th and will run through August 29th.  The program will provide weekly snapshots of water quality at popular swimming areas during the peak recreational swimming season.  Sites to be tested include Wilson’s Beach in Cape Vincent, Potter’s Beach on Grindstone Island, Frink Dock in […] read more

On the 46th Earth Day the St. Lawrence is a Most Endangered River
This is wrong! It shouldn't be! And, it doesn't have to be! read more

Dr. Daniel Macfarlane, environmental historian, to speak on Plan 2014 at Winter Environmental Conference
His extensive knowledge of the history of the Seaway and dams that have caused ecological damage to wetland habitat and declines in key species will be very helpful as we approach the second anniversary of the referral of Plan 2014 read more

See our blog for more news!     

About Us

Founded in 1978, Save The River is a non-profit, member-supported environmental organization whose mission is to restore, preserve and protect the ecological integrity of the Upper St. Lawrence River through advocacy, education and research. Since 2004 Save The River has been a member of the Waterkeeper Alliance as the Upper St. Lawrence Riverkeeper.

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The River

The St. Lawrence River is one of the largest Rivers in the world and a magnificent place to live, work and play. Save The River has been working for more than 35 years to protect the River for current and future generations.

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Join or Give

Over half of Save The River's budget comes from individual memberships and contributions. Supporting us with an annual membership donation will keep our River advocacy, education and research programs going strong.

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Save The River was designated the Upper St. Lawrence Riverkeeper and is a member of the international Waterkeeper Alliance. The Waterkeeper Alliance is the world’s fastest growing environmental movement, with more than 200 local Waterkeepers patrolling rivers, lakes and coastal waterways on 6 continents.

Photos from around the River

Off to the races by Pam Quimby  Resting by Pam Quimby  On the Rocks by Nick Apel  Classic Sunset by Barb Hupp  TI Park Library by Meg Kerr  Fall by Carrie Kerr  Girls by Juliane Bauer  Winter Navigation by Sherman Ward  Off on the River by Jenni Werndorf  A Seaway View by Devon Colby 
 Pictures from our Flickr photostream

409 Riverside Drive
Clayton, NY 13624

(315) 686-2010


© Save The River 2014