Grand Bayou Reservoir at spillway near Coushatta water level

Name: Grand Bayou Reservoir at spillway near Coushatta water level (U.S. Geological Survey)
Creator: U.S. Geological Survey
License: https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits

Reservoir, Grand Bayou Reservoir, Louisiana, United States

Directions

Very low for mid-October

Surface elevation

133.70ft

Measured Oct 16, 2026, 04:30 PM CDT (45 min ago)

Water level: 40.33 ft

History

What this means

Water is short at Grand Bayou Reservoir at spillway near Coushatta: the latest reading of 133.70 ft is far below normal for mid-October.

A year ago it stood at 137.51 ft (−3.81 ft).

The 30-day range is 133.69 ft – 136.54 ft.

Many reservoirs reach their low point of the year in fall, before winter rain and snow start the refill.

Compared with 5 years of daily readings for this time of year. How to read levels

Key numbers

Same day last year: 137.51 ft−3.81 ft
Lowest and highest in 30 days: 133.69 ft – 136.54 ft
Lowest and highest in 12 months: 133.76 ft – 139.47 ft

Boating and fishing at Grand Bayou Reservoir at spillway near Coushatta

At low levels, launching can mean a long walk or a closed ramp, and shallow points stick out further than charts suggest.

Conditions at the shore change with the level, so check with the agency that runs the lake before a trip.

Weather at the gauge

The forecast is not available right now.

Sunrise 07:18 AM Sunset 06:41 PM Daylight 11h 23m First quarter 34 %

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Bayou Pierre near PowhatanRiver gauge, Bayou Pierre	11.28 ft	Low	+0.11 ft	10 mi
Bayou Pierre near Lake EndRiver gauge, Bayou Pierre	5.22 ft	Normal	+0.05 ft	10 mi
Black Lake Bayou near ClarenceLake, Black Lake Bayou	8.59 ft	High	+0.07 ft	17 mi
Saline Bayou near LuckyRiver gauge, Saline Bayou	3.56 ft	Normal	0.00 ft	22 mi
Flat River at High IslandRiver gauge, Flat River	7.87 ft	Normal	−0.04 ft	22 mi
Lake Bistineau near RinggoldLake, Lake Bistineau	133.78 ft	Below flood stage		26 mi
Bayou San Patricio near BensonRiver gauge, Bayou San Patricio	5.98 ft	Low	−0.03 ft	27 mi
Dugdemona River near JonesboroRiver gauge, Dugdemona River	3.42 ft	Low	−0.05 ft	28 mi

Questions and answers

How does Grand Bayou Reservoir at spillway near Coushatta compare with last year?

It is 3.81 ft lower than on the same day last year, when the reading was 137.51 ft.

How often is Grand Bayou Reservoir at spillway near Coushatta updated?

Several times an hour. New readings from U.S. Geological Survey appear here as they arrive. Latest: Oct 16, 2026, 04:30 PM CDT.

What is the water level of Grand Bayou Reservoir at spillway near Coushatta today?

On Oct 16, 2026, 04:30 PM CDT, the surface elevation was 133.70 ft. Very low.

Is the level of Grand Bayou Reservoir at spillway near Coushatta normal?

Very low for mid-October. Compared with 5 years of daily readings for this time of year.

How often is this data updated?

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 U.S. Geological Survey, the official operator of this gauge, and are published under 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:07352820 (Agency page)
Coordinates: 31.99879, -93.21327 (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
Surface elevation `elevation`	133.70 ft	2026-10-16 21:30	Provisional
Water level `stage`	40.33 ft	2026-10-16 21:30	Provisional

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How to cite

U.S. Geological Survey: Grand Bayou Reservoir at spillway near Coushatta (usgs:07352820). Accessed October 16, 2026 via Nivelmap, https://nivelmap.com/en/united-states/louisiana/grand-bayou-reservoir-at-spillway-near-coushatta

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