Charleston king tides and high water in 2020
In 2020, NOAA's Charleston tide gauge recorded water high enough for FloodRoute's model to put at least one Charleston road at risk on 54 days. The highest was 8.18 ft on Sunday, October 18, 2020, 1.01 ft above the tide tables, with 121 roads at risk, including Cherry Street, Courtenay Drive and Colonial Street.
Oct 18, 2020: 121 roads at risk8.18 ft at the Charleston gauge · 1.0 ft above the tide tables · deepest: Severe · model estimate
Estimates, not records of actual flooding. Each day is NOAA's verified high water at the tide gauge, run through FloodRoute's flood model on today's roads and elevations, in dry weather. Drains, levees, tide gates, rain, road changes and elevation error all mean real conditions differed. Not for property, real-estate, insurance, lending, engineering or legal decisions.
Highest water in 2020
| Date | High water · Charleston | vs tide tables | Roads at risk | Deepest streets (model) |
|---|---|---|---|---|
| 8.18 ft | +1.01 ft | 121Severe | Cherry Street, Courtenay Drive, Colonial Street | |
| 8.13 ft | +1.05 ft | 121Severe | Cherry Street, Courtenay Drive, Colonial Street | |
| 8.11 ft | +1.32 ft | 108Severe | Cherry Street, Courtenay Drive, Colonial Street | |
| 8.07 ft | +1.32 ft | 108Severe | Cherry Street, Courtenay Drive, Colonial Street | |
| 8.06 ft | +1.43 ft | 108Severe | Cherry Street, Courtenay Drive, Colonial Street |
Every day with roads at risk (54)
| Date | High water · Charleston | vs tide tables | Roads at risk | Deepest streets (model) |
|---|---|---|---|---|
| 7.08 ft | +1.48 ft | 14Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.18 ft | +1.55 ft | 18Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.16 ft | +1.31 ft | 18Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.23 ft | +1.08 ft | 21Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.11 ft | +0.64 ft | 14Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.34 ft | +0.70 ft | 32Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.26 ft | +0.61 ft | 21Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.39 ft | +0.91 ft | 32Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.09 ft | +0.88 ft | 14Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.42 ft | +0.69 ft | 32Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.50 ft | +0.69 ft | 36Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.05 ft | +0.32 ft | 14Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.04 ft | +1.30 ft | 14Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.18 ft | +0.55 ft | 18Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.21 ft | +0.89 ft | 18Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.34 ft | +0.95 ft | 32Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.29 ft | +0.93 ft | 21Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.24 ft | +1.01 ft | 21Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.44 ft | +1.22 ft | 36Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.29 ft | +1.16 ft | 21Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.25 ft | +0.90 ft | 21Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.21 ft | +0.69 ft | 18Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.16 ft | +0.57 ft | 18Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.10 ft | +0.55 ft | 14Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.28 ft | +0.91 ft | 21Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 8.06 ft | +1.43 ft | 108Severe | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.87 ft | +1.08 ft | 79Severe | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.61 ft | +1.27 ft | 44Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.44 ft | +0.71 ft | 36Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 8.07 ft | +1.32 ft | 108Severe | Cherry Street, Courtenay Drive, Colonial Street | |
| 8.11 ft | +1.32 ft | 108Severe | Cherry Street, Courtenay Drive, Colonial Street | |
| 8.02 ft | +1.30 ft | 93Severe | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.66 ft | +1.08 ft | 57Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.19 ft | +0.77 ft | 18Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.12 ft | +1.18 ft | 18Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.73 ft | +1.13 ft | 70Severe | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.51 ft | +1.00 ft | 36Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.56 ft | +0.69 ft | 44Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.77 ft | +0.67 ft | 70Severe | Cherry Street, Courtenay Drive, Colonial Street | |
| 8.18 ft | +1.01 ft | 121Severe | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.94 ft | +0.84 ft | 93Severe | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.49 ft | +0.60 ft | 36Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.15 ft | +0.54 ft | 18Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.20 ft | +1.12 ft | 18Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.70 ft | +1.11 ft | 57Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.86 ft | +0.95 ft | 79Severe | Cherry Street, Courtenay Drive, Colonial Street | |
| 8.13 ft | +1.05 ft | 121Severe | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.64 ft | +0.57 ft | 57Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.10 ft | +0.20 ft | 14Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.14 ft | +0.52 ft | 18Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.15 ft | +0.60 ft | 18Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.30 ft | +0.65 ft | 21Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 7.64 ft | +1.03 ft | 57Likely | Cherry Street, Courtenay Drive, Colonial Street | |
| 8.00 ft | +1.59 ft | 93Severe | Cherry Street, Courtenay Drive, Colonial Street |