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 user interface only serves WQX2.2 profiles, which do NOT contain USGS data added after March 11, 2024.

WQP Home >  Providers >  STORET >  11NPSWRD_WQX >  11NPSWRD_WQX-LAVO_1979_LTWNS

Lower Twin North Shore (11NPSWRD_WQX-LAVO_1979_LTWNS) site data in the Water Quality Portal

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

This lake site, maintained by the National Park Service Water Resources Division (identifier 11NPSWRD_WQX), has the name "Lower Twin North Shore" and has the identifier 11NPSWRD_WQX-LAVO_1979_LTWNS. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)18020003.

This site is located in Shasta County County, California at 40.5096667000 degrees latitude and -121.3612222000 degrees longitude using the datum NAD27. No horizontal location accuracy metadata is available. This site is at an elevation of 6534 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 "11NPSWRD_WQX-LAVO_1979_LTWNS" 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 1979 - 1979
Inorganics, Major, Non-metals 1979 - 1979
Nutrient 1979 - 1979
Physical 1979 - 1979
*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 11NPSWRD_WQX
OrganizationFormalName National Park Service Water Resources Division
MonitoringLocationIdentifier 11NPSWRD_WQX-LAVO_1979_LTWNS
MonitoringLocationName Lower Twin North Shore
MonitoringLocationTypeName Lake
MonitoringLocationDescriptionText This station is located in Lassen Volcanic National Park on the Prospect Peak CA 7.5 minute topographic quadrangle. Data were collected at this site as part of the "Lassen Park Summer 1979 Lake Surveys." This station is located along the north shore of Lower Twin Lake. The latitude and longitude coordinates for this station are approximate. For further information regarding Lassen Volcanic National Park contact Natural Resources; Lassen Volcanic National Park; P.O. Box 100; Mineral CA 96063; Tel. 5305954444. Data for this station were uploaded to STORET by Lisa G. Smith; National Park Service; Water Resources Division 1201 Oak Ridge Drive; Suite 250; Fort Collins; CO 80525 Tel. 9702253516.*** Legacy STORET Station Type: /TYPA/AMBNT/LAKE
HUCEightDigitCode 18020003
LatitudeMeasure 40.5096667000
LongitudeMeasure -121.3612222000
SourceMapScaleNumeric 0
HorizontalCollectionMethodName Unknown
HorizontalCoordinateReferenceSystemDatumName NAD27
VerticalMeasure/MeasureValue 6534
VerticalMeasure/MeasureUnitCode ft
VerticalCollectionMethodName Topographic Map Interpolation
VerticalCoordinateReferenceSystemDatumName UNKWN
CountryCode US
StateCode 06
CountyCode 089
ProviderName STORET