Ayish Bayou near San Augustine water level

Name: Ayish Bayou near San Augustine water level (U.S. Geological Survey)
Creator: U.S. Geological Survey
License: https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits

River gauge, Ayish Bayou, Texas, United States

Directions

Low for early October

Water level

2.96ft Steady over the last 24 hours

Measured Oct 4, 2026, 12:15 PM CDT (14 days ago)

This gauge last reported 14 days ago. The value may be out of date; check the agency page before you rely on it.

History

Not enough readings for a chart yet. History builds up with every update.

What this means

Low water at Ayish Bayou near San Augustine: the gauge reads 2.96 ft, below normal for early October. That reading is from Oct 4, 2026, 12:15 PM CDT, so the gauge may be offline or reporting late.

That puts it 0.92 ft below the median of 3.88 ft for early October, based on 17 years of readings. It is 9.04 ft below the flood stage of 12.00 ft.

The level has held steady over the past 24 hours. Without real rain upstream, that is unlikely to change quickly.

Fall is often low-water season on rivers, and it usually takes a few days of steady rain to change that.

Compared with 17 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date: 3.88 ft0.92 ft below the median for this date
Normal for this date: 2.93 ft – 5.08 ft8 years in 10 fall in this range (17 years of records)
Highest on record: 20.91 ftMarch 30, 2008

Paddling and fishing conditions

At low levels, plan for shorter paddling trips and expect to walk your boat through a few shoals.

For reference, flood stage is 12.00 ft.

What happens at each level

17.00 ft: Secondary roads near the bayou will flood and be barricaded. Moderate to severe lowland flooding will continue for at least a couple of days.
14.50 ft: Minor lowland flooding of boat ramps.
14.00 ft: Lowland flooding will slowly decrease during the next few days.
12.00 ft: Lowland flooding of the heavily wooded floodplain will continue for the next several days.
2.96 ft: Right now

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

Highest crests on record

Chance of at least minor flooding in October to December: 28 %.

Rank	Level	Date
1	20.91 ft	March 30, 2008
2	18.02 ft	September 14, 1978
3	17.50 ft	September 21, 1958
4	17.40 ft	August 30, 2017
5	17.02 ft	May 10, 2021
6	16.82 ft	April 9, 1968
7	16.68 ft	April 24, 1979
8	16.59 ft	May 18, 1989
9	16.34 ft	April 30, 2021
10	15.85 ft	March 9, 2016

Weather at the gauge

The forecast is not available right now.

Sunrise 07:23 AM Sunset 06:41 PM Daylight 11 hr, 18 min First quarter 55%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Attoyac Bayou near ChirenoRiver gauge, Attoyac Bayou	1.58 ft	Below flood stage	−0.15 ft	12 mi
Sam Rayburn Reservoir near JasperReservoir, Sam Rayburn Reservoir	153.39 ft	Very low	−0.05 ft	23 mi
Neches River near RocklandRiver gauge, Neches River	3.09 ft	Normal	−0.06 ft	30 mi
Bayou Lanana at NacogdochesRiver gauge, Bayou Lanana	3.79 ft	Below flood stage	+0.10 ft	33 mi
Angelina River at Hwy 59 near LufkinRiver gauge, Angelina River	154.05 ft	Below flood stage	−0.15 ft	34 mi
Toledo Bd Reservoir near BurkevilleReservoir, Toledo Bd Reservoir	167.90 ft	High	−0.07 ft	37 mi
Sabine River at Toledo Bd Reservoir near BurkevilleRiver gauge, Sabine River	259 cfs	Low	±0	38 mi
Bayou Toro near ToroRiver gauge, Bayou Toro	2.32 ft	Very low	±0	38 mi

Questions and answers

What is flood stage for Ayish Bayou near San Augustine?

The official flood stage is 12.00 ft. The level is currently 9.04 ft below it.

What is a normal level for Ayish Bayou near San Augustine in early October?

The median for early October is 3.88 ft. In 8 years out of 10 the reading falls between 2.93 ft and 5.08 ft, based on 17 years of records.

Is gage height the same as water depth?

No. Gage height is measured from a fixed reference point chosen by the agency, so a reading of 10 ft does not mean the river is 10 ft deep.

What is the water level of Ayish Bayou near San Augustine today?

On Oct 4, 2026, 12:15 PM CDT, the water level was 2.96 ft. Steady over the last 24 hours.

Is Ayish Bayou near San Augustine rising or falling?

Steady over the last 24 hours.

Is the level of Ayish Bayou near San Augustine normal?

Low for early October. Compared with 17 years of daily readings for this time of year.

What is the highest water level ever recorded at Ayish Bayou near San Augustine?

The highest level on record is 20.91 ft on March 30, 2008.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: U.S. Geological Survey
Station code: usgs:08039100 (Agency page)
Coordinates: 31.39630, -94.15103 (WGS84)
Vertical datum: NGVD29
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	2.96 ft	2026-10-04 17:15	Provisional

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How to cite

U.S. Geological Survey: Ayish Bayou near San Augustine (usgs:08039100). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/united-states/texas/ayish-bayou-near-san-augustine

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