* WHAT...Heat index values up to 110 expected.
* WHERE...Portions of south central and southwest Louisiana.
* WHEN...From 11 AM to 7 PM CDT Monday.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
Heat Advisory
Until 2026-07-19T18:30:00-05:00
•
National Weather Service
* WHAT...Heat index values up to 110 expected.
* WHERE...Portions of south central and southwest Louisiana.
* WHEN...From 11 AM to 7 PM CDT Monday.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
LOWER ATCHAFALAYA RIVER AT MORGAN CITY, LA
Realtime Data
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Report
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Conditions
127,000
Discharge (cfs)
3.4
Gauge Height (ft)
Streamflow discharge was last observed at 127,000 cfs, and a gauge height of 3.42 feet.
With the
% decrease since yesterday,
the streamflow average over the past 10 days is 143,700 .
Weather today, Tomorrow,
This river is fed by several tributaries, including the Red River and the Mississippi River. There are no major dams along this stretch of the river. The flow of water in the river is influenced by seasonal trends, with high water levels typically occurring in the spring due to snowmelt and heavy rainfall. In the summer, the water levels tend to be lower. An interesting fact about this river is that it is home to a diverse range of wildlife, including alligators, turtles, and freshwater fish.
July 19, 2026
Elevation
3.0 ft
Last Updated
Mean water velocity for discharge computation, feet per second
2.01 ft/sec
Gage height, ft
3.42 ft
Nitrate plus nitrite, water, in situ, mg/L as N
1.33 mg/l as N
Streamflow, ft³/s
127000.0 ft3/s
Specific conductance, water, unfiltered, microsiemens per centimeter at 25°C
334.0 uS/cm @25C
Dissolved oxygen, water, unfiltered, mg/L
4.9 mg/l
Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 ±2.5°, formazin nephelometric units (FNU)