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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-300910091532301

SMn-146 (USGS-300910091532301) site data in the Water Quality Portal

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

This well site, maintained by the USGS Louisiana Water Science Center (identifier USGS-LA), has the name "SMn-146" and has the identifier USGS-300910091532301. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)08080103. See more details of this site the the USGS NWIS Web page for this site.

This site is located in St. Martin Parish County, Louisiana at 30.15297877000000 degrees latitude and -91.8898399000000 degrees longitude using the datum NAD83. The horizontal location collection method was "Interpolated from MAP." and the accuracy is 1 seconds. The source map scale is 1:62500. This site is at an elevation of 10.00 feet and the accuracy of the elevation measurement, collected using the method "Interpolated from topographic map." is 2.5 feet. The vertical coordinate reference system is NGVD29.

This site is located in the "Coastal lowlands aquifer system" aquifer. The geologic formation type is Chicot Aquifer, Lower. The well was contructed on 19761213. The well depth is 875 ft. The well hole depth is 1018 ft.

To download the metadata about this site along with water quality data, go to the Portal Page and enter "USGS-300910091532301" 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*
Inorganics, Major, Metals 1976 - 1976
Inorganics, Major, Non-metals 1976 - 1976
Inorganics, Minor, Metals 1976 - 1976
Nutrient 1976 - 1976
Physical 1976 - 1976
*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-300910091532301
MonitoringLocationName SMn-146
MonitoringLocationTypeName Well
HUCEightDigitCode 08080103
LatitudeMeasure 30.15297877000000
LongitudeMeasure -91.8898399000000
SourceMapScaleNumeric 62500
HorizontalAccuracyMeasure/MeasureValue 1
HorizontalAccuracyMeasure/MeasureUnitCode seconds
HorizontalCollectionMethodName Interpolated from MAP.
HorizontalCoordinateReferenceSystemDatumName NAD83
VerticalMeasure/MeasureValue 10.00
VerticalMeasure/MeasureUnitCode feet
VerticalAccuracyMeasure/MeasureValue 2.5
VerticalAccuracyMeasure/MeasureUnitCode feet
VerticalCollectionMethodName Interpolated from topographic map.
VerticalCoordinateReferenceSystemDatumName NGVD29
CountryCode US
StateCode 22
CountyCode 099
AquiferName Coastal lowlands aquifer system
FormationTypeText Chicot Aquifer, Lower
ConstructionDateText 19761213
WellDepthMeasure/MeasureValue 875
WellDepthMeasure/MeasureUnitCode ft
WellHoleDepthMeasure/MeasureValue 1018
WellHoleDepthMeasure/MeasureUnitCode ft
ProviderName NWIS