Caillou Lake (Sister Lake) SW of Dulac water level
Lake, Louisiana, United States
Right now
Normal for late October
Water level
- Water temperature
- 71 °F
History
202120222023202420252026
What this means
Caillou Lake (Sister Lake) SW of Dulac is at 2.06 ft, in the normal range for late October.
That puts it 0.16 ft above the median of 1.90 ft for late October, based on 7 years of readings. A year ago it stood at 1.99 ft (+0.07 ft).
It has dropped 0.07 ft over the past 24 hours. In the last month it has stayed between 0.06 ft and 2.89 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 71 °F.
Compared with 7 years of daily readings for this time of year. How to read levels
Key numbers
- Median for this date
- 1.90 ft0.16 ft above the median for this date
- Normal for this date
- 1.42 ft – 2.36 ft8 years in 10 fall in this range (7 years of records)
- Same day last year
- 1.99 ft+0.07 ft
- Lowest and highest in 30 days
- 0.06 ft – 2.89 ft
- Lowest and highest in 12 months
- −0.79 ft – 2.89 ft
- Highest on record
- 7.88 ftSeptember 12, 2008
On the water at Caillou Lake (Sister Lake) SW of Dulac
Normal levels mean few surprises on the water: ramps in use and the shoreline where you expect it.
At 71 °F, the water is pleasant for swimming. Warm, still water can encourage algae, so check for local bloom notices.
Highest crests on record
| Rank | Level | Date |
|---|---|---|
| 1 | 7.88 ft | September 12, 2008 |
| 2 | 6.95 ft | September 23, 2005 |
| 3 | 5.83 ft | September 4, 2011 |
| 4 | 4.54 ft | August 30, 2012 |
| 5 | 3.86 ft | July 7, 2010 |
| 6 | 3.55 ft | April 30, 2016 |
| 7 | 3.49 ft | October 16, 2006 |
| 8 | 3.41 ft | September 14, 2009 |
| 9 | 3.41 ft | July 13, 2014 |
| 10 | 3.41 ft | June 15, 2015 |
Weather at the gauge
No rain in the last 3 days.
Forecast: Open-Meteo
Map
Nearby gauges
| Gauge | Level | Compared with normal | 24 hours | Distance |
|---|---|---|---|---|
| Caillou Bay SW of CocodrieEstuary gauge | 1.72 ft | Normal | −0.40 ft | 12 mi |
| Company Canal at Salt Barrier near LockportRiver gauge, Company Canal | 2.30 ft | Normal | +0.12 ft | 34 mi |
| Lower Atchafalaya River at Morgan CityRiver gauge, Lower Atchafalaya River | 3.00 ft | Normal | +0.27 ft | 35 mi |
| Company Canal at Hwy 1 at LockportRiver gauge, Company Canal | 1.73 ft | Normal | +0.14 ft | 36 mi |
| Bayou Lafourche at LockportRiver gauge, Bayou Lafourche | 4.97 ft | Normal | +0.10 ft | 36 mi |
| Bayou Lafourche at ThibodauxRiver gauge, Bayou Lafourche | 3.44 ft | Low | +0.06 ft | 38 mi |
| Wax Lake Outlet at CalumetRiver gauge, Wax Lake Outlet | 3.14 ft | Very high | +0.09 ft | 41 mi |
| Bayou Teche E of Calumet Flood Gate at CalumetRiver gauge, Bayou Teche E of Calumet Flood Gate | 2.55 ft | Normal | +0.19 ft | 41 mi |
Questions and answers
How does Caillou Lake (Sister Lake) SW of Dulac compare with last year?
It is 0.07 ft higher than on the same day last year, when the reading was 1.99 ft.
What is a normal level for Caillou Lake (Sister Lake) SW of Dulac in late October?
The median for late October is 1.90 ft. In 8 years out of 10 the reading falls between 1.42 ft and 2.36 ft, based on 7 years of records.
What is the water level of Caillou Lake (Sister Lake) SW of Dulac today?
On Oct 21, 2026, 02:15 AM CDT, the water level was 2.06 ft. Down 0.07 ft over the last 24 hours.
Is Caillou Lake (Sister Lake) SW of Dulac rising or falling?
Down 0.07 ft over the last 24 hours. Up 0.31 ft over the last 7 days.
Is the level of Caillou Lake (Sister Lake) SW of Dulac normal?
Normal for late October. Compared with 7 years of daily readings for this time of year.
What is the highest water level ever recorded at Caillou Lake (Sister Lake) SW of Dulac?
The highest level on record is 7.88 ft on September 12, 2008.
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:07381349(Agency page)- Coordinates
29.24917, -90.92111(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 | 2.06 ft | 2026-10-21 07:15 | Provisional |
| Water temperature | 71 °F | 2026-10-21 07:00 | Provisional |
Download
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How to cite
U.S. Geological Survey: Caillou Lake (Sister Lake) SW of Dulac (usgs:07381349). Accessed October 21, 2026 via Nivelmap, https://nivelmap.com/en/united-states/louisiana/caillou-lake-sister-lake-sw-of-dulac
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