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Ashley River below Summerville water level

Tidal gauge, Ashley River, South Carolina, United States

Directions

Right now

High for mid-October

Water level

10.24ft Up 2.40 ft over the last 24 hours

Water temperature
65 °F
10 13 15 Highest onrecord 15.06 ft

History

History
81012ftOct 16Oct 17Oct 18Oct 19Oct 2081012ftOct 16Oct 18Oct 20
81012ftSep 21Sep 28Oct 5Oct 13Oct 2081012ftSep 21Oct 5Oct 20
81012ftOct 2025Jan 2026Apr 2026Jul 2026Oct 202681012ftOct 2025Apr 2026Oct 2026
81012ftJanMarMayJulSepNov202681012ftJanAprJulOct2026

20252026

Water level Normal range (10–90 %)

What this means

The Ashley River below Summerville is above normal at 10.24 ft.

That puts it 0.63 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 (+0.36 ft).

It has risen 2.40 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 65 °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 ft0.63 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+0.36 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

What happens at each level

15.06 ft
Record level reached in association with Tropical Storm Irma on September 11th, 2017.
10.24 ft
Right now

Impact statements from the U.S. National Weather Service.

Highest crests on record

RankLevelDate
115.06 ftSeptember 11, 2017
213.97 ftDecember 17, 2023
313.74 ftSeptember 12, 2017
413.69 ftAugust 30, 2023
513.40 ftNovember 24, 2018
613.28 ftDecember 9, 2018
713.17 ftNovember 23, 2018
813.10 ftDecember 24, 2019
913.02 ftDecember 23, 2019
1013.00 ftAugust 31, 2019

Weather at the gauge

No rain in the last 3 days.

19 Mon 70° 49° – Wind 11 mph
20 Tue 74° 46° – Wind 10 mph
21 Wed 73° 51° – Wind 10 mph
22 Thu 73° 52° – Wind 7 mph
23 Fri 73° 52° – Wind 9 mph
24 Sat 73° 55° – Wind 13 mph
25 Sun 75° 54° – Wind 12 mph

Forecast: Open-Meteo

Sunrise 07:29 AM Sunset 06:43 PM Daylight 11 hr, 14 min First quarter 68%

Map

Other gauges on the Ashley River

Gauge Level Compared with normal 24 hours Distance
Ashley River at Cooke CrossroadsTidal gauge, Ashley River 16.02 ft High +1.86 ft 3.7 mi
Ashley River near North CharlestonTidal gauge, Ashley River 8.94 ft Normal +0.57 ft 10 mi

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Cooper River at Filbin Creek at North CharlestonTidal gauge, Cooper River 10.71 ft Low +0.31 ft 11 mi
Cooper River at Ports Authority Pier K CharlestonTidal gauge, Cooper River 12.15 ft Very low ±0 13 mi
Cooper River at Mobay near N CharlestonTidal gauge, Cooper River 8.01 ft Normal +0.46 ft 14 mi
Back River at Dupont Intake near KittredgeTidal gauge, Back River 17.62 ft Very high +0.43 ft 14 mi
Cooper River near Goose CreekTidal gauge, Cooper River 17.50 ft Very high +0.68 ft 15 mi
Cooper River above Goose CreekTidal gauge, Cooper River 9.00 ft Very high +0.67 ft 15 mi
Wando River above Mount PleasantTidal gauge, Wando River 18.37 ft Normal +0.49 ft 16 mi
Edisto River near GivhansRiver gauge, Edisto River 2.41 ft Low −0.16 ft 16 mi

Questions and answers

How does the Ashley River below Summerville compare with last year?

It is 0.36 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 20, 2026, 08:45 AM EDT, the water level was 10.24 ft. Up 2.40 ft over the last 24 hours.

Is Ashley River below Summerville rising or falling?

Up 2.40 ft over the last 24 hours. Up 0.68 ft over the last 7 days.

Is the level of Ashley River below Summerville normal?

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

ParameterLast valueTime (UTC)Quality
Water level 10.24 ft 2026-10-20 12:45 Provisional
Water temperature 65 °F 2026-10-20 12:45 Provisional

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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.