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Ashley River below Summerville water level

Tidal gauge, Ashley River, South Carolina, United States

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Right now

Very low for mid-October

Water level

8.80ft Down 1.39 ft over the last 24 hours

Water temperature
68 °F
10 13 15 Highest onrecord 15.06 ft

History

History
891011ftOct 13Oct 14Oct 16Oct 17Oct 19891011ftOct 13Oct 16Oct 19
810ftSep 20Sep 27Oct 4Oct 11Oct 19810ftSep 20Oct 4Oct 19
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 running far below normal at 8.80 ft.

That puts it 0.89 ft below the median of 9.69 ft for mid-October, based on 9 years of readings. A year ago it stood at 10.20 ft (−1.40 ft).

It has dropped 1.39 ft over the past 24 hours. In the last month it has stayed between 6.45 ft and 12.02 ft.

The sensor also reports a water temperature of 68 °F.

Compared with 9 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date
9.69 ft0.89 ft below the median for this date
Normal for this date
9.16 ft – 10.50 ft8 years in 10 fall in this range (9 years of records)
Same day last year
10.20 ft−1.40 ft
Lowest and highest in 30 days
6.45 ft – 12.02 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.
8.80 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

The forecast is not available right now.

Sunrise 07:28 AM Sunset 06:44 PM Daylight 11 hr, 16 min First quarter 55%

Map

Other gauges on the Ashley River

Gauge Level Compared with normal 24 hours Distance
Ashley River at Cooke CrossroadsTidal gauge, Ashley River 13.24 ft Normal −1.43 ft 3.7 mi
Ashley River near North CharlestonTidal gauge, Ashley River 9.38 ft Normal −0.36 ft 10 mi

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Cooper River at Filbin Creek at North CharlestonTidal gauge, Cooper River 11.70 ft Very high −0.97 ft 11 mi
Cooper River at Ports Authority Pier K CharlestonTidal gauge, Cooper River 13.57 ft High −0.32 ft 13 mi
Cooper River at Mobay near N CharlestonTidal gauge, Cooper River 8.53 ft High −0.12 ft 14 mi
Back River at Dupont Intake near KittredgeTidal gauge, Back River 16.81 ft High +1.08 ft 14 mi
Cooper River near Goose CreekTidal gauge, Cooper River 16.68 ft Normal +0.35 ft 15 mi
Cooper River above Goose CreekTidal gauge, Cooper River 7.56 ft Very low +0.31 ft 15 mi
Wando River above Mount PleasantTidal gauge, Wando River 18.63 ft Normal −0.27 ft 16 mi
Edisto River near GivhansRiver gauge, Edisto River 2.65 ft Low −0.25 ft 16 mi

Questions and answers

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

It is 1.40 ft lower than on the same day last year, when the reading was 10.20 ft.

What is a normal level for the Ashley River below Summerville in mid-October?

The median for mid-October is 9.69 ft. In 8 years out of 10 the reading falls between 9.16 ft and 10.50 ft, based on 9 years of records.

What is the water level of Ashley River below Summerville today?

On Oct 18, 2026, 11:45 PM EDT, the water level was 8.80 ft. Down 1.39 ft over the last 24 hours.

Is Ashley River below Summerville rising or falling?

Down 1.39 ft over the last 24 hours. Down 0.15 ft over the last 7 days.

Is the level of Ashley River below Summerville normal?

Very low 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 8.80 ft 2026-10-19 03:45 Provisional
Water temperature 68 °F 2026-10-19 03:45 Provisional

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How to cite

U.S. Geological Survey: Ashley River below Summerville (usgs:021720825). Accessed October 19, 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.