Boat Ramp Guide
river CT

Thames River Water Level

Live water level data from USGS monitoring gauges near Thames River. Monitoring conditions for 3 boat ramps.

Current Level

5.47 ft
Status Unavailable
USGS Gauge: POQUONNOCK RIVER AT LONG HILL, CT Updated 43m ago

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Stay informed about water level changes and weekly conditions at Thames River. We'll email you when it matters.

Monitoring Gauges

POQUONNOCK RIVER AT LONG HILL, CT

USGS 01119001 · Stream gauge · 2.6 mi from nearest ramp

Full USGS data →

YANTIC RIVER AT YANTIC, CT

USGS 01127500 · Stream gauge · 7.4 mi from nearest ramp

Full USGS data →

How Water Levels Affect Boat Ramp Access

Thames River has 3 public boat ramps. When water levels drop significantly below normal, concrete ramps may not extend to the waterline and natural or gravel launches can become impassable. Carry-in launches for kayaks and canoes are generally less affected by water level changes.

Check the current gauge reading above before trailering to Thames River. For detailed information on individual ramps, visit the Thames River boat ramps page.

Frequently Asked Questions

What is the current water level of Thames River?
As of May 3, 2026, the gauge height at Thames River is 5.47 ft. This is being monitored for this time of year.
How do water levels affect boat ramp access at Thames River?
Thames River has 3 public boat ramps. When water levels are significantly below normal, some ramps may become difficult to use or inaccessible. Concrete ramps are generally usable at a wider range of water levels than natural or gravel launches.
Where does this water level data come from?
Water level data is provided by the U.S. Geological Survey (USGS) National Water Information System. Readings are updated approximately every 15 minutes from automated monitoring gauges. Data shown here is provisional and subject to revision.
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