Long Island Sound near New London Harbor (IN MLLW)
Stage at this gauge is reported IN MLLW.
Flood levels
Official flood levels at this gauge: minor flooding begins at 5.0 ft; moderate flooding begins at 6.0 ft; major flooding begins at 7.8 ft.
| Minor flooding | 5.0 ft |
|---|---|
| Moderate flooding | 6.0 ft |
| Major flooding | 7.8 ft |
Highest recorded crests
- 10.6 ft on Sep 21, 1938 (historic crest)
- 9.6 ft on Aug 31, 1954 (historic crest)
- 8.0 ft on Oct 29, 2012 (historic crest)
- 7.6 ft on Nov 25, 1950 (historic crest)
What the water does
National Weather Service impact statements for this gauge, in the Weather Service's own words.
| 5.0 ft | Flooding occurs in the downtown Mystic area directly along the waterfront, primarily in the street on Gravel Street and River Road. Groton experiences minor shoreline flooding. |
|---|---|
| 6.0 ft | Coastal flooding causes Niantic River Road to close between 1st and 2nd Avenue. |
| 6.5 ft | Inundation of one to two feet of water occurs on streets and several properties in Saybrook Point, as well as in the Marina where several feet of water is possible, as water reaches over the seawall. |
| 8.0 ft | Along low lying portions of the Long Island Sound, two to three feet of inundation is possible a few blocks inland with one to two feet of inundation possible north of I-95 in several low spots around waterways such as the Niantic River in Niantic, the Mystic River in Mystic. Nearly fifteen miles inland along the Connecticut and Thames Rivers, inundation is also possible with major damage in regions such as West End Drive and Seaside Lane in Old Lyme. |
Forecast office: NWS Upton · River Forecast Center: Northeast River Forecast Center.
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Nearby stations and gauges
- NEW LONDON NOAA tide station · 0.7 mi
- Yale boathouse NOAA tide station · 4.8 mi
- Niantic NOAA tide station · 5.3 mi
- WEST MYSTIC NOAA tide station · 6.4 mi
- Silver Eel Pond NOAA tide station · 8.0 mi
- Little Gull Island NOAA tide station · 10.7 mi