Barataria Bay near Grand Terre Island water level

Name: Barataria Bay near Grand Terre Island water level (U.S. Geological Survey)
Creator: U.S. Geological Survey
License: https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits

Lake, Barataria Bay, Louisiana, United States

Directions

Normal for late October

Water level

3.02ft Down 0.06 ft over the last 24 hours

Measured Oct 21, 2026, 02:00 AM CDT (1 hour ago)

Water temperature: 73 °F

History

What this means

Barataria Bay near Grand Terre Island is at 3.02 ft, in the normal range for late October.

That puts it 0.01 ft above the median of 3.01 ft for late October, based on 7 years of readings.

It has dropped 0.06 ft over the past 24 hours. In the last month it has stayed between 1.54 ft and 3.97 ft.

Lakes and reservoirs often sit lower in fall after a summer of evaporation and use, and recover with winter rain and spring snowmelt. The sensor also reports a water temperature of 73 °F.

Compared with 7 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date: 3.01 ft0.01 ft above the median for this date
Normal for this date: 2.69 ft – 3.77 ft8 years in 10 fall in this range (7 years of records)
Lowest and highest in 30 days: 1.54 ft – 3.97 ft
Lowest and highest in 12 months: 1.03 ft – 3.97 ft

On the water at Barataria Bay near Grand Terre Island

Normal levels mean few surprises on the water: ramps in use and the shoreline where you expect it.

At 73 °F, the water is pleasant for swimming. Warm, still water can encourage algae, so check for local bloom notices.

Weather at the gauge

No rain in the last 3 days.

20 Tue 75° 70° – Wind 18 mph

21 Wed 76° 69° – Wind 16 mph

22 Thu 76° 64° – Wind 15 mph

23 Fri 80° 61° – Wind 13 mph

24 Sat 78° 65° – Wind 19 mph

25 Sun 75° 65° 0.00 in Wind 20 mph

26 Mon 78° 64° 0.01 in Wind 16 mph

Forecast: Open-Meteo

Sunrise 07:06 AM Sunset 06:25 PM Daylight 11 hr, 19 min Waxing gibbous 75%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Barataria Pass at Grand IsleRiver gauge, Barataria Pass	7.92 ft	Highest on record	−0.11 ft	3.6 mi
Hackberry Bay NW of Grand IsleEstuary gauge	3.85 ft	Very high	−0.10 ft	8 mi
Barataria Waterway at Mud Lake S of LafitteRiver gauge, Barataria Waterway	6.82 ft	Normal	−0.01 ft	11 mi
Little Lake near Bay Dosgris E of GallianoLake, Little Lake	5.13 ft	Normal	+0.02 ft	14 mi
Bayou Perot at Point Legard near CutoffEstuary gauge, Bayou Perot	2.51 ft	Normal	+0.01 ft	21 mi
Naomi Diversion Canal near NaomiRiver gauge, Naomi Diversion Canal	1.48 ft	Normal	+0.20 ft	26 mi
Northeast Bay Gardene near Point-A-LA-HacheEstuary gauge, Northeast Bay Gardene	1.65 ft	Normal	−0.15 ft	27 mi
Crooked B. NW of L. Cuatro Caballo near DelacroixEstuary gauge, Crooked B. NW of L. Cuatro Caballo	5.98 ft	High	−0.10 ft	30 mi

Questions and answers

What is a normal level for Barataria Bay near Grand Terre Island in late October?

The median for late October is 3.01 ft. In 8 years out of 10 the reading falls between 2.69 ft and 3.77 ft, based on 7 years of records.

What is the water level of Barataria Bay near Grand Terre Island today?

On Oct 21, 2026, 02:00 AM CDT, the water level was 3.02 ft. Down 0.06 ft over the last 24 hours.

Is Barataria Bay near Grand Terre Island rising or falling?

Down 0.06 ft over the last 24 hours. Up 0.24 ft over the last 7 days.

Is the level of Barataria Bay near Grand Terre Island normal?

Normal for late October. Compared with 7 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.

Where does this data come from?

The values come directly from the U.S. Geological Survey, the official operator of this gauge, and are in the public domain. We do not estimate or model live values.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: U.S. Geological Survey
Station code: usgs:291929089562600 (Agency page)
Coordinates: 29.32472, -89.94050 (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	3.02 ft	2026-10-21 07:00	Provisional
Water temperature	73 °F	2026-10-21 06:00	Provisional

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How to cite

U.S. Geological Survey: Barataria Bay near Grand Terre Island (usgs:291929089562600). Accessed October 21, 2026 via Nivelmap, https://nivelmap.com/en/united-states/louisiana/barataria-bay-near-grand-terre-island

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