Bayou Teche at Keystone L&D near St. Martinville water level

Name: Bayou Teche at Keystone L&D near St. Martinville 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, Bayou Teche, Louisiana, United States

Directions

Very low for late October

Water level

9.98ft Steady over the last 24 hours

Measured Oct 21, 2026, 03:45 AM CDT (1 hour ago)

Flow: 189 cfs

History

7 days 30 days 1 year Years compared

20252026

Water level Normal range (10–90 %)

What this means

Bayou Teche at Keystone L&D near St. Martinville is running far below normal at 9.98 ft.

The median for late October is 10.18 ft, based on 31 years of readings, so the river stage is 0.20 ft below typical. On the same day last year the reading was 9.99 ft, a difference of −0.01 ft.

It has barely moved over the past 24 hours. Without real rain upstream, that is unlikely to change quickly. In the last month it has stayed between 9.94 ft and 10.07 ft.

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

Compared with 31 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date: 10.18 ft0.20 ft below the median for this date
Normal for this date: 9.99 ft – 10.51 ft8 years in 10 fall in this range (31 years of records)
Same day last year: 9.99 ft−0.01 ft
Lowest and highest in 30 days: 9.94 ft – 10.07 ft
Lowest and highest in 12 months: 9.88 ft – 11.54 ft

Floating and fishing near Bayou Teche at Keystone L&D near St. Martinville

Low water exposes gravel bars that make good wading access, but some boat ramps may be left high and dry.

Weather at the gauge

No rain in the last 3 days.

21 Wed 81° 52° – Wind 8 mph

22 Thu 83° 53° – Wind 9 mph

23 Fri 84° 59° – Wind 9 mph

24 Sat 82° 59° – Wind 13 mph

25 Sun 81° 55° – Wind 11 mph

26 Mon 82° 58° – Wind 9 mph

27 Tue 80° 61° – Wind 7 mph

Forecast: Open-Meteo

Sunrise 07:14 AM Sunset 06:31 PM Daylight 11 hr, 17 min Waxing gibbous 76%

Map

Other gauges on Bayou Teche

Gauge	Level	Compared with normal	24 hours	Distance
Bayou Teche below Keystone L&D near St. MartinvilleRiver gauge, Bayou Teche	3.10 ft	Normal	+0.20 ft	0.0 mi
Bayou Teche at Adeline Bridge near JeaneretteRiver gauge, Bayou Teche	1.95 ft	High	+0.25 ft	20 mi

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Ruth Canal near RuthRiver gauge, Ruth Canal	8.61 ft	Normal	+0.01 ft	12 mi
Vermilion River near LafayetteRiver gauge, Vermilion River	3.43 ft	Normal	+0.09 ft	13 mi
Bayou Darby near Lake Fausse Point CutRiver gauge, Bayou Darby	9.06 ft	Normal	−0.04 ft	14 mi
Vermilion River at Surrey St. at LafayetteRiver gauge, Vermilion River	5.68 ft	Normal	+0.13 ft	14 mi
Vermilion River at WoodlawnRiver gauge, Vermilion River	4.36 ft	Normal	+0.23 ft	15 mi
Vermilion River at Hwy 733 near LafayetteRiver gauge, Vermilion River	4.12 ft	Very high	+0.36 ft	16 mi
Pontoon Bridge Canal near Butte LaroseRiver gauge, Pontoon Bridge Canal	5.50 ft	Normal	−0.01 ft	16 mi
Vermillion Rvr N. of I-10 at LafayetteRiver gauge, Vermillion Rvr N. of I-10	5.21 ft	Normal	+0.05 ft	17 mi

Questions and answers

Is Bayou Teche at Keystone L&D near St. Martinville higher than last year?

No, it is 0.01 ft lower than on the same day last year, when the reading was 9.99 ft.

What is a normal level for Bayou Teche at Keystone L&D near St. Martinville in late October?

The median for late October is 10.18 ft. In 8 years out of 10 the reading falls between 9.99 ft and 10.51 ft, based on 31 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 Bayou Teche at Keystone L&D near St. Martinville today?

On Oct 21, 2026, 03:45 AM CDT, the water level was 9.98 ft. Steady over the last 24 hours.

Is Bayou Teche at Keystone L&D near St. Martinville rising or falling?

Steady over the last 24 hours. Steady over the last 7 days.

Is the level of Bayou Teche at Keystone L&D near St. Martinville normal?

Very low for late October. Compared with 31 years of daily readings for this time of year.

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:07385700 (Agency page)
Coordinates: 30.07104, -91.82928 (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	9.98 ft	2026-10-21 08:45	Provisional
Flow	189 cfs	2026-10-21 08:45	Provisional

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How to cite

U.S. Geological Survey: Bayou Teche at Keystone L&D near St. Martinville (usgs:07385700). Accessed October 21, 2026 via Nivelmap, https://nivelmap.com/en/united-states/louisiana/bayou-teche-at-keystone-l-and-d-near-st-martinville

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