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-MOJA_DT_EPSP

EPSOM SPRING (11NPSWRD_WQX-MOJA_DT_EPSP) site data in the Water Quality Portal

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

This spring site, maintained by the National Park Service Water Resources Division (identifier 11NPSWRD_WQX), has the name "EPSOM SPRING" and has the identifier 11NPSWRD_WQX-MOJA_DT_EPSP. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)18090208.

This site is located in San Bernardino County County, California at 35.0224722000 degrees latitude and -116.1385556000 degrees longitude using the datum NAD27. 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 "11NPSWRD_WQX-MOJA_DT_EPSP" 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 1919 - 1919
Inorganics, Major, Non-metals 1919 - 1919
Inorganics, Minor, Metals 1919 - 1919
Not Assigned 1919 - 1919
Nutrient 1919 - 1919
Organics, Other 1919 - 1919
Physical 1919 - 1919
*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-MOJA_DT_EPSP
MonitoringLocationName EPSOM SPRING
MonitoringLocationTypeName Spring
MonitoringLocationDescriptionText THE STATION IS LOCATED ON THE CRUCERO HILL; CASAN BERNARDINO COUNTY 7.5 MINUTE SERIES (TOPOGRAPHIC) QUADRANGLE. THE STATION IS LOCATED AT EPSOM SPRING AND IS OUTSIDE OF THE MOJAVE NATIONAL PRESERVE BOUNDARY. THE DATA ARE FROM UNITED STATES DEPARTMENT OF INTERIOR GEOLOGICAL SURVEY WATERSUPPLY PAPER 578 TITLED "THE MOHAVE DESERT REGION; CALIFORNIA: A GEOGRAPHIC; GEOLOGIC; AND HYDROLOGIC RECONNAISSANCE" BY DAVID THOMPSON (1929). ALL ION CONCENTRATIONS REPORTED WERE ASSUMED TO BE OF THE DISSOLVED SPECIES. LATITUDE AND LONGITUDE COORDINATES WERE ESTIMATED FROM TOWNSHIP AND RANGE DESCRIPTIONS GIVEN IN THE REPORT. FOR MORE INFORMATION ABOUT THE PRESERVE CONTACT NATURAL RESOURCES AT MOJAVE NATIONAL PRESERVE; 222 EAST MAIN STREET; SUITE 202; BARSTOW; CA 92311; TEL. (619)2558726. DATA WERE PROCESSED AND UPLOADED TO STORET BY RICHARD HENDERSON AT NPSWRD; 1201 OAK RIDGE DRIVE; SUITE 250; FORT COLLINS; CO 80525; TEL. (970)2253516.*** Legacy STORET Station Type: /TYPA/AMBNT/SPRING
HUCEightDigitCode 18090208
LatitudeMeasure 35.0224722000
LongitudeMeasure -116.1385556000
SourceMapScaleNumeric 0
HorizontalCollectionMethodName Unknown
HorizontalCoordinateReferenceSystemDatumName NAD27
CountryCode US
StateCode 06
CountyCode 071
ProviderName STORET