Grand Bayou Reservoir water level · LA

Wind forecast, gusts, and gage height for small-craft sailing at Grand Bayou Reservoir (Grand Bayou Reservoir At Spillway near Coushatta).

Good to know 📏 Reading USGS water gauges: elevation vs. gage height 💨 Gust factor: an indicator of jibe-crash risk
Grand Bayou Reservoir water level

Gage height recorded at USGS gauge 07352820, refreshed every 15 minutes to 1 hour depending on the sensor.

Gage height

40.29ft

recorded Nov 4, 5:30 AM

24-hr change

+0.16ft

rising

7-day change

+0.10ft

rising

14-day range

40.12–40.31ft

lowest to highest

Recent daily readings

DateLevel (ft)Δ day
Nov 4●40.29↓ 0.02
Nov 340.31↑ 0.19
Nov 240.12↓ 0.05
Nov 140.17↓ 0.01
Oct 3140.18↑ 0.01
Oct 3040.17↓ 0.01
Oct 2940.18↓ 0.01
Oct 2840.190
Oct 2740.19↓ 0.01
Oct 2640.20↓ 0.01
Oct 2540.21↓ 0.02
Oct 2440.23↓ 0.01
Oct 2340.24↓ 0.01
Oct 2240.25—

Readings fetched Nov 4, 6:24 AM; the chart above loads the latest data live from USGS.

Grand Bayou Reservoir water level questions

What is the water level at Grand Bayou Reservoir today?
40.29 ft, recorded Nov 4, 5:30 AM at USGS gauge 07352820. The chart above refreshes live from the same gauge.
Is Grand Bayou Reservoir rising or falling?
rising — 0.10 ft over the last 7 days.
How does this compare to normal for Grand Bayou Reservoir?
Over the last 14 days the gauge has ranged from 40.12 ft to 40.31 ft; today's reading sits near the top of that range.
Where does the water level data for Grand Bayou Reservoir come from?
USGS gauge 07352820 (Grand Bayou Reservoir At Spillway near Coushatta), which reports every 15 minutes to 1 hour. Readings are provisional until reviewed by the USGS.
What is the water temperature at Grand Bayou Reservoir?
This gauge has no live water-temperature sensor — the fishing tab shows a seasonal estimate based on air temperature.

Gage height history

Gage height · USGS gauge 07352820

Reading the chart. This gauge reports gage height — the depth of water above the sensor reference point, not absolute elevation. Trends matter more than the absolute number: a falling trend means shrinking launch depth.

Water levels respond to dam operations, irrigation drawdown, snowmelt, and recent rainfall. For launch decisions, combine the trend here with the wind forecast — low water plus strong wind makes steep, tired ramps.

About this lake

Location
31.9988°, -93.2133°
Gauge datum
93 ft
USGS gauge
07352820
Water temp sensor
No

Water level data comes from the USGS gauge above; wind is modeled for the lake’s coordinates by Open-Meteo. Always confirm conditions locally before launching — shorelines, ramps, and trees can all change what you feel on the water. Southeast lake wind is often a thermal: light mornings building to a steady breeze by mid-afternoon, with squall lines ahead of cold fronts in the cooler months. Pop-up thunderstorms are the main hazard from June through September.

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