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_EVER_GC7

GRASSY CREEK STATION 7 (11NPSWRD_WQX-LAVO_EVER_GC7) 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 National Park Service Water Resources Division (identifier 11NPSWRD_WQX), has the name "GRASSY CREEK STATION 7" and has the identifier 11NPSWRD_WQX-LAVO_EVER_GC7. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)18020003.

This site is located in Lassen County County, California at 40.5030833000 degrees latitude and -121.3111389000 degrees longitude using the datum NAD27. No horizontal location accuracy metadata is available. This site is at an elevation of 6080 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_EVER_GC7" 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*
Physical 1963 - 1963
*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_EVER_GC7
MonitoringLocationName GRASSY CREEK STATION 7
MonitoringLocationTypeName River/Stream
MonitoringLocationDescriptionText This station is located in Lassen Volcanic National Park on the Prospect Peak 7.5 minute U.S. Geological Survey topographic quadrangle. Data were collected by Fred H. Everest as Part I of a project by Humboldt State University. The water quality data are part of a report called "A Survey of Horseshoe and Snag Lakes and Their Tributaries; Lassen Volcanic National Park; JuneSeptember 1963." Grassy Creek exits from the northeast side of Horseshoe Lake; flows to the north; and terminates in Snag Lake. The stream drops about 490 feet along the course of its three mile flow. 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/STREAM
HUCEightDigitCode 18020003
LatitudeMeasure 40.5030833000
LongitudeMeasure -121.3111389000
SourceMapScaleNumeric 0
HorizontalCollectionMethodName Unknown
HorizontalCoordinateReferenceSystemDatumName NAD27
VerticalMeasure/MeasureValue 6080
VerticalMeasure/MeasureUnitCode ft
VerticalCollectionMethodName Topographic Map Interpolation
VerticalCoordinateReferenceSystemDatumName UNKWN
CountryCode US
StateCode 06
CountyCode 035
ProviderName STORET