St. Lawrence River Water Level

Q: What is the water level of St. Lawrence River today?

St. Lawrence River water levels are measured at USGS gauge OSWEGATCHIE RIVER NEAR HEUVELTON NY; the current gauge height updates on this page throughout the day, alongside a 30-day trend.

Q: Is St. Lawrence River high or low right now?

This page compares the current reading against the trailing 30-day average and range for St. Lawrence River — above the average means higher water than usual, below means lower.

Live gauge height for St. Lawrence River, measured at USGS station OSWEGATCHIE RIVER NEAR HEUVELTON NY (10.6 mi from the nearest mapped ramp).

Current gauge height

1.23 ft

Updated 41 min ago

vs. 30-day average

—

Streamflow

440 cfs

Boat Ramps on St. Lawrence River (40)

Morrisburg Waterfront Park — South Dundas, Ontario
Kring Point State Park — Town of Alexandria, New York
Cedar Point State Park — Town of Cape Vincent, New York
Massena Intake Boat Launches — Massena town, New York
Centennial Park — Prescott, Ontario
Waddington Boat Launch — Waddington town, New York
Jacques Cartier State Park — Town of Morristown, New York
Patterson Street Boat Launch — Ogdensburg city, New York
Keewaydin State Park — Town of Alexandria, New York
Chippewa Bay Boat Launch — Chippewa Bay, New York

See all St. Lawrence River boat ramps →

St. Lawrence River Water Level FAQ

What is the water level of St. Lawrence River today?

The USGS gauge for St. Lawrence River (OSWEGATCHIE RIVER NEAR HEUVELTON NY) currently reads a gauge height of 1.23 feet. Readings update throughout the day from USGS instrumentation.

Is St. Lawrence River high or low right now?

Compare today's reading with the 30-day chart above — a reading near the top of the range means high water, near the bottom means low water.

Where can I launch a boat on St. Lawrence River?

BoatLaunchMap lists 40 boat ramps on St. Lawrence River, each with directions, ratings, and launch details.

Data: U.S. Geological Survey, station 04263000. Gauge height is measured relative to the station datum, not lake depth. Always verify conditions on site before launching.