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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 >  NWIS >  USGS-LA >  USGS-300420090230100

Lake Pontchartrain near Norco, Site 3 (USGS-300420090230100) site data in the Water Quality Portal

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

This lake, reservoir, impoundment site, maintained by the USGS Louisiana Water Science Center (identifier USGS-LA), has the name "Lake Pontchartrain near Norco, Site 3" and has the identifier USGS-300420090230100. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)08090202. See more details of this site the the USGS NWIS Web page for this site.

This site is located in St. John The Baptist Parish County, Louisiana at 30.07242388000000 degrees latitude and -90.3836930000000 degrees longitude using the datum NAD83. The horizontal location collection method was "Interpolated from MAP." and the accuracy is Unknown Unknown.

To download the metadata about this site along with water quality data, go to the Portal Page and enter "USGS-300420090230100" 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, Algae, Phytoplankton, Photosynthetic Pigments 1996 - 1996
Biological, Photosynthetic Pigments 1996 - 1996
Inorganics, Major, Metals 1996 - 1996
Inorganics, Major, Non-metals 1996 - 1996
Nutrient 1996 - 1996
Organics, Other 1996 - 1996
Physical 1996 - 1996
*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 USGS-LA
OrganizationFormalName USGS Louisiana Water Science Center
MonitoringLocationIdentifier USGS-300420090230100
MonitoringLocationName Lake Pontchartrain near Norco, Site 3
MonitoringLocationTypeName Lake, Reservoir, Impoundment
HUCEightDigitCode 08090202
LatitudeMeasure 30.07242388000000
LongitudeMeasure -90.3836930000000
HorizontalAccuracyMeasure/MeasureValue Unknown
HorizontalAccuracyMeasure/MeasureUnitCode Unknown
HorizontalCollectionMethodName Interpolated from MAP.
HorizontalCoordinateReferenceSystemDatumName NAD83
CountryCode US
StateCode 22
CountyCode 095
ProviderName NWIS