Mystic River Water Level

Q: What is the water level of Mystic River today?

Mystic River water levels are measured at USGS gauge POQUONNOCK RIVER AT LONG HILL, CT; the current gauge height updates on this page throughout the day, alongside a 30-day trend.

Q: Is Mystic River high or low right now?

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

Live gauge height for Mystic River, measured at USGS station POQUONNOCK RIVER AT LONG HILL, CT (4.0 mi from the nearest mapped ramp).

Current gauge height

5.28 ft

Updated 1 hr ago

vs. 30-day average

—

Streamflow

4 cfs

Boat Ramps on Mystic River (3)

Mystic River Bridge — Groton, Connecticut
Mystic River Boat Ramp — Stonington, Connecticut
Mystic River Boat Ramp — Groton, Connecticut

See all Mystic River boat ramps →

Mystic River Water Level FAQ

What is the water level of Mystic River today?

The USGS gauge for Mystic River (POQUONNOCK RIVER AT LONG HILL, CT) currently reads a gauge height of 5.28 feet. Readings update throughout the day from USGS instrumentation.

Is Mystic 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 Mystic River?

BoatLaunchMap lists 3 boat ramps on Mystic River, each with directions, ratings, and launch details.

Data: U.S. Geological Survey, station 01119001. Gauge height is measured relative to the station datum, not lake depth. Always verify conditions on site before launching.