Cohansey River at Greenwich (IN MLLW)
Stage at this gauge is reported IN MLLW.
Flood levels
Official flood levels at this gauge: minor flooding begins at 7.2 ft; moderate flooding begins at 8.2 ft; major flooding begins at 9.2 ft.
| Minor flooding | 7.2 ft |
|---|---|
| Moderate flooding | 8.2 ft |
| Major flooding | 9.2 ft |
Highest recorded crests
- 10.7 ft on Nov 25, 1950 (historic crest)
- 9.2 ft on Oct 25, 1980 (historic crest)
- 9.2 ft on Oct 30, 2012 (historic crest)
- 8.9 ft on Oct 29, 2021 (historic crest)
What the water does
National Weather Service impact statements for this gauge, in the Weather Service's own words.
| 7.2 ft | (MLLW) MINOR FLOODING. |
|---|---|
| 7.5 ft | (MLLW) COASTAL FLOOD ADVISORY LEVEL. |
| 8.0 ft | (MLLW) Flooding begins along Canton Road in Stow Creek Township. Flooding begins in Greenwich (including along Bacons Neck Road and Market Lane). |
| 8.2 ft | (MLLW) MODERATE FLOODING. At this level, widespread flooding of roadways begins with many roads becoming impassable in Greenwich Township, Fairfield Township and Lawrence Township. Lives may be at risk when people put themselves in harm's way. Some damage to vulnerable structures may begin to occur. COASTAL FLOOD WARNING LEVEL. |
| 9.2 ft | (MLLW) MAJOR FLOODING. At this level, flooding starts to become severe enough to begin causing structural damage along with widespread flooding of roadways near the bay in Greenwich Township, Fairfield Township and Lawrence Township. Vulnerable homes and businesses may be severely damaged as water levels rise further above this threshold. Numerous roads become impassable and some neighborhoods may be isolated. The flood waters become a danger to anyone who attempts to cross on foot or in a vehicle. |
| 9.2 ft | (MLLW) The level reached on October 25, 1980. |
| 10.7 ft | (Mean Lower Low Water (MLLW)) The level reached on November 25, 1950. |
Forecast office: NWS Mount Holly · River Forecast Center: Middle Atlantic River Forecast Center.
A NOAA tide station shares this spot: Greenwich Pier, with tide predictions and official flood levels.
Cohansey River at Greenwich (IN MLLW) in your pocket
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Nearby stations and gauges
- Greenwich Pier NOAA tide station · 0.0 mi
- Raccoon Ditch NOAA tide station · 3.1 mi
- Stathems Neck NOAA tide station · 3.3 mi
- Pine Island NOAA tide station · 4.9 mi
- Ship John Shoal NOAA tide station · 5.6 mi
- Canton NOAA tide station · 6.1 mi