USGS stream gauge 07381490 · Louisiana

Atchafalaya River at Simmesport, LA

As of Oct 28, 2026, 6:30 AM CDT, this gauge read a gage height of 8.45 ft and a flow of 125,000 cfs. Over the past 7 days the water level fell 1.46 ft. Data from the USGS.

Updated Oct 28, 2026, 8:26 AM EDT (USGS Water Data snapshot)

Gage height

8.45 ft

7-day range 8.25–9.98 ft

Discharge

125,000cfs

7-day range 122,000–142,000 cfs

Latest reading

57 min ago

Oct 28, 2026, 6:30 AM CDT

Readings are provisional USGS data and may be revised. Rivers can rise fast after rain upstream. For flood warnings, check weather.gov and follow local authorities.

Gage height, past 7 days

8.118.619.129.6210.12Oct 21Oct 22Oct 23Oct 24Oct 25Oct 26Oct 27
Gage height (ft), hourly, past 7 days. Low 8.25 · High 9.98.

Discharge, past 7 days

120,400126,200132,000137,800143,600Oct 21Oct 22Oct 23Oct 24Oct 25Oct 26Oct 27
Discharge (cfs), hourly, past 7 days. Low 122,000 · High 142,000.

Chart dates are in Louisiana local time (America/Chicago).

Reading this gauge

Gage height is the water surface level above this station's own reference point, so 8.45 ft is not the river depth and cannot be compared with other gauges. Discharge, the volume of water flowing past each second, is the better number for comparing conditions over time and between rivers.

Station details
USGS site number07381490
Official nameAtchafalaya River at Simmesport, LA
StateLouisiana
Drainage area87,570 sq mi
Coordinates30.9825° N, 91.7983° W

Source: USGS Water Data for the Nation, site 07381490. Parameters 00065 (gage height) and 00060 (discharge).

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