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

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

Save The River’s 27th Annual Winter Environmental Conference
Sewage, Oil, Microbeads - Oh my! Register now for the conference Saturday, February 6, 2016 read more

Wild & Scenic Film Festival at Clarkson University
Save The River & Clarkson University Present the Wild & Scenic Film Festival.Saturday, September 12, 2015. read more

Happy Birthday Haas!
It's been a year since Save The River published Juliane Flora's hit children's book Haas the Great Blue Heron read more

Save the date! September 12th, 3-5pm
Save The River and Clarkson University are bringing the Wild & Scenic Film Festival to the River region. read more

DEC Advises Anglers to be Aware of Spawning Lake Sturgeon
The New York State Department of Environmental Conservation (DEC) today reminded anglers to be aware of spawning lake sturgeon in New York's Great Lakes waters, Great Lakes connecting channels, and in tributaries of the Great Lakes, St. Lawrence River, Finger Lakes and Oneida Lake. read more

Know Your H20!*
This week is Canada Water Week to celebrate clean water across Canada. read more

Happy World Wetlands Day 2015!
On the River, supporting wetlands means adopting Plan 2014 – a modern water levels plan that will restore 64,000 acres of wetlands on the St. Lawrence River and Lake Ontario read more

Save The River Reports on Week 8 of Beach Watch Program
Save The River reports that all beach water samples taken on August 25th passed and the beaches are safe for swimming. 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