Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

New WQX 3.0 profiles are available at waterqualitydata.us/beta/. These profiles will contain recent USGS data added since March 11, 2024, which marks the beginning of limited accessibility for USGS data. Read more about the 3.0 profiles and associated changes here.

This legacy user interface will continue to function for several weeks. However, this user interface only serves WQX2.2 profiles, which do NOT contain USGS data added after March 11, 2024.

WQP Home >  Providers >  STORET >  EMAP_CS >  EMAP_CS-LA02-0037

Atchafalaya Bay (EMAP_CS-LA02-0037) site data in the Water Quality Portal

Data Provider: STORET (Learn more about Water Quality Portal Data Providers)

This estuary site, maintained by the Environmental Monitoring and Assessment Program (identifier EMAP_CS), has the name "Atchafalaya Bay" and has the identifier EMAP_CS-LA02-0037. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)08080103.

This site is located in Iberia Parish County, Louisiana at 29.4355000 degrees latitude and -91.5980000 degrees longitude using the datum NAD83. No horizontal location accuracy metadata is available. This site is at an elevation of 0 ft No vertical location accuracy metadata is available.

To download the metadata about this site along with water quality data, go to the Portal Page and enter "EMAP_CS-LA02-0037" into the "Site ID" box under Site Parameters

What other monitoring locations are upstream or downstream from this one?

Upstream and downstream locations

This map shows all Water Quality Portal stations that are 10 miles upstream (dashed dark blue) and 10 miles downstream (solid light blue) of this monitoring location (indicated by the large blue circle). The upstream and downstream functionality is provided by the Network Linked Data Index.

When were data collected at this location?

Periods of record for data characteristic groups

For a more detailed breakdown of data, go to the Monitoring Report at the EPA How's My Waterway Application
Characteristic Group Date Range*
Biological 2002 - 2002
Inorganics, Major, Non-metals 2002 - 2002
Inorganics, Minor, Metals 2002 - 2002
Inorganics, Minor, Non-metals 2002 - 2002
Not Assigned 2002 - 2002
Nutrient 2002 - 2002
Organics, Other 2002 - 2002
Organics, PCBs 2002 - 2002
Organics, Pesticide 2002 - 2002
Physical 2002 - 2002
Toxicity 2002 - 2002
*Date ranges may contain gap years

What other information is available for this location?

Detailed Metadata

For the definitions of the metadata elements, please go to the Water Quality Portal user guide

Location Metadata Value
OrganizationIdentifier EMAP_CS
OrganizationFormalName Environmental Monitoring and Assessment Program
MonitoringLocationIdentifier EMAP_CS-LA02-0037
MonitoringLocationName Atchafalaya Bay
MonitoringLocationTypeName Estuary
MonitoringLocationDescriptionText Station area= 169.74 ;Strata= LA02-03 ;GIS region= Gulf of Mexico ;GIS Class= > 250 SQ.Kilometers
HUCEightDigitCode 08080103
LatitudeMeasure 29.4355000
LongitudeMeasure -91.5980000
HorizontalCollectionMethodName GPS Code (Pseudo Range) Differential
HorizontalCoordinateReferenceSystemDatumName NAD83
VerticalMeasure/MeasureValue 0
VerticalMeasure/MeasureUnitCode ft
VerticalCoordinateReferenceSystemDatumName Unknown
CountryCode US
StateCode 22
CountyCode 045
ProviderName STORET