Ashley River below Summerville water level
Tidal gauge, Ashley River, South Carolina, United States
Right now
Very high for mid-October
Water level
- Water temperature
- 67 °F
History
20252026
What this means
The Ashley River below Summerville is well above normal at 10.68 ft.
That puts it 1.07 ft above the median of 9.61 ft for mid-October, based on 9 years of readings. A year ago it stood at 9.88 ft (+0.80 ft). The record high is 15.06 ft, set on September 11, 2017.
It has risen 2.43 ft over the past 24 hours. If the rise continues, low-lying paths and riverside parking can go under water. In the last month it has stayed between 6.45 ft and 12.04 ft.
The sensor also reports a water temperature of 67 °F.
Compared with 9 years of daily readings for this time of year. How to read levels
Key numbers
- Median for this date
- 9.61 ft1.07 ft above the median for this date
- Normal for this date
- 9.25 ft – 10.35 ft8 years in 10 fall in this range (9 years of records)
- Same day last year
- 9.88 ft+0.80 ft
- Lowest and highest in 30 days
- 6.45 ft – 12.04 ft
- Lowest and highest in 12 months
- 7.49 ft – 10.76 ft
- Highest on record
- 15.06 ftSeptember 11, 2017
Flood levels and safety
Most flood deaths in the US happen in vehicles. Six inches of fast water can knock an adult off their feet, and a foot or two can float a car. If a road is covered, turn around.
Readings can change quickly after heavy rain upstream, so check again before heading near the water.
What happens at each level
- 15.06 ft
- Record level reached in association with Tropical Storm Irma on September 11th, 2017.
- 10.68 ft
- Right now
Impact statements from the U.S. National Weather Service.
Highest crests on record
| Rank | Level | Date |
|---|---|---|
| 1 | 15.06 ft | September 11, 2017 |
| 2 | 13.97 ft | December 17, 2023 |
| 3 | 13.74 ft | September 12, 2017 |
| 4 | 13.69 ft | August 30, 2023 |
| 5 | 13.40 ft | November 24, 2018 |
| 6 | 13.28 ft | December 9, 2018 |
| 7 | 13.17 ft | November 23, 2018 |
| 8 | 13.10 ft | December 24, 2019 |
| 9 | 13.02 ft | December 23, 2019 |
| 10 | 13.00 ft | August 31, 2019 |
Weather at the gauge
No rain in the last 3 days.
Forecast: Open-Meteo
Map
Other gauges on the Ashley River
| Gauge | Level | Compared with normal | 24 hours | Distance |
|---|---|---|---|---|
| Ashley River at Cooke CrossroadsTidal gauge, Ashley River | 16.31 ft | High | +1.51 ft | 3.7 mi |
| Ashley River near North CharlestonTidal gauge, Ashley River | 9.11 ft | Normal | +0.58 ft | 10 mi |
Nearby gauges
| Gauge | Level | Compared with normal | 24 hours | Distance |
|---|---|---|---|---|
| Cooper River at Filbin Creek at North CharlestonTidal gauge, Cooper River | 10.81 ft | Normal | +0.39 ft | 11 mi |
| Cooper River at Ports Authority Pier K CharlestonTidal gauge, Cooper River | 12.24 ft | Very low | +0.18 ft | 13 mi |
| Cooper River at Mobay near N CharlestonTidal gauge, Cooper River | 8.13 ft | Normal | +0.53 ft | 14 mi |
| Back River at Dupont Intake near KittredgeTidal gauge, Back River | 17.67 ft | Very high | +0.38 ft | 14 mi |
| Cooper River near Goose CreekTidal gauge, Cooper River | 17.63 ft | Very high | +0.58 ft | 15 mi |
| Cooper River above Goose CreekTidal gauge, Cooper River | 8.54 ft | High | +0.63 ft | 15 mi |
| Wando River above Mount PleasantTidal gauge, Wando River | 17.72 ft | Very low | +0.04 ft | 16 mi |
| Edisto River near GivhansRiver gauge, Edisto River | 2.46 ft | Low | −0.20 ft | 16 mi |
Questions and answers
How does the Ashley River below Summerville compare with last year?
It is 0.80 ft higher than on the same day last year, when the reading was 9.88 ft.
What is a normal level for the Ashley River below Summerville in mid-October?
The median for mid-October is 9.61 ft. In 8 years out of 10 the reading falls between 9.25 ft and 10.35 ft, based on 9 years of records.
What is the water level of Ashley River below Summerville today?
On Oct 19, 2026, 08:45 PM EDT, the water level was 10.68 ft. Up 2.43 ft over the last 24 hours.
Is Ashley River below Summerville rising or falling?
Up 2.43 ft over the last 24 hours. Up 1.12 ft over the last 7 days.
Is the level of Ashley River below Summerville normal?
Very high for mid-October. Compared with 9 years of daily readings for this time of year.
What is the highest water level ever recorded at Ashley River below Summerville?
The highest level on record is 15.06 ft on September 11, 2017.
How often is this data updated?
The U.S. Geological Survey publishes a new reading every 15 minutes. This page refreshes within minutes of each update.
For specialists
Station codes, datum, parameters, data quality and downloads
- Operator
- U.S. Geological Survey
- Station code
usgs:021720825(Agency page)- Coordinates
32.92583, -80.15167(WGS84)- Vertical datum
- NAVD88
- Update interval
- every 15 minutes
- Licence
- Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision
Published series
| Parameter | Last value | Time (UTC) | Quality |
|---|---|---|---|
| Water level | 10.68 ft | 2026-10-20 00:45 | Provisional |
| Water temperature | 67 °F | 2026-10-20 00:45 | Provisional |
Download
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How to cite
U.S. Geological Survey: Ashley River below Summerville (usgs:021720825). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-states/south-carolina/ashley-river-below-summerville
How we check values
Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.
Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer