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Scheduled Maintenance Notice
USGS will be performing maintenance on the time series data processing system beginning at 09:00 EDT on September 10, 2026. During this period, delivery of the latest time series data will be delayed. The maintenance is expected to finish within 2 hours, after which all backlogged time series data will be processed and delivered to WDFN web portals and APIs.

Due to significant recent staff reductions, real-time water-level and precipitation data will be discontinued at this station soon after June 30, 2026. For more information, please email GS-W-LMG_Data_Chief@usgs.gov

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Available data

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Continuous data

2 data types available - data from 2021-09-21 to 2026-08-07

Daily data

1 data types available - data from 2021-09-22 to 2026-08-06

Field measurements

1 data types available - data from 2021-09-21 to 2026-08-07

Discrete sample data

0 observed properties (data types) available

Peak measurements

1 data types available - with data from 1961-09-14 to 2025-05-10

Statistical tables for select daily data types

1 data types available - data from 2021-09-22 to 2026-08-06

Location details and information

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Operated in cooperation with:

Louisiana Department of Transportation and Development

Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	07381412	n/a
Location name	INTRACOASTAL WATERWAY NR PORT ALLEN LA	n/a
Site type	Stream	ST
Decimal latitude (WGS84)	30.4322222222222	n/a
Decimal longitude (WGS84)	-91.2104722222222	n/a
Latitude-longitude method	Differentially corrected Global Positioning System.	D
Latitude-longitude accuracy	Accurate to + or - 1 sec.	S
District	Louisiana	22
State	Louisiana	22
County	West Baton Rouge Parish	121
Country	United States of America	n/a
Altitude of gage/land surface	-0.56 feet	n/a
Method altitude determined	GNSS1 - Level 1 Quality Survey Grade Global Navigation Satellite System	W
Altitude accuracy	0.16 feet	n/a
Altitude datum	North American Vertical Datum of 1988	NAVD88
Subbasin hydrologic unit	Lower Grand	08070300
Drainage basin		n/a
Date of first construction		n/a
Drainage area		n/a
Contributing drainage area		n/a
Time zone abbreviation	CST	n/a
Site honors Daylight Saving Time	Y	n/a
National aquifer		n/a
Local aquifer		n/a
Local aquifer type		n/a
Well depth		n/a
Hole depth		n/a
Source of depth data		n/a

Monitoring location Intracoastal Waterway NR Port Allen LA - USGS-07381412