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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 >  LDEQ319 >  LDEQ319-4805

Coulee du Portage East-Southeast of St. Martinville, Louisiana (LDEQ319-4805) site data in the Water Quality Portal

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

This river/stream site, maintained by the LDEQ319 (identifier LDEQ319), has the name "Coulee du Portage East-Southeast of St. Martinville, Louisiana" and has the identifier LDEQ319-4805. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)08080102.

This site is located in St. Martin Parish County, Louisiana at 30.0915900000 degrees latitude and -91.7770200000 degrees longitude using the datum NAD83. No horizontal location accuracy metadata is available.

To download the metadata about this site along with water quality data, go to the Portal Page and enter "LDEQ319-4805" 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*
Information 2017 - 2019
Microbiological 2019 - 2023
Nutrient 2018 - 2023
Organics, Other 2017 - 2019
Physical 2017 - 2023
*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 LDEQ319
OrganizationFormalName LDEQ319
MonitoringLocationIdentifier LDEQ319-4805
MonitoringLocationName Coulee du Portage East-Southeast of St. Martinville, Louisiana
MonitoringLocationTypeName River/Stream
MonitoringLocationDescriptionText On LA-345 bridge, 3.8 miles east-southeast of St. Martinville, 3.4 miles north-northwest of Loreauville
HUCEightDigitCode 08080102
LatitudeMeasure 30.0915900000
LongitudeMeasure -91.7770200000
HorizontalCollectionMethodName GPS Code (Pseudo Range) Differential
HorizontalCoordinateReferenceSystemDatumName NAD83
CountryCode US
StateCode 22
CountyCode 099
ProviderName STORET