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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 >  STORET >  MIDDLETOWNUPCW_WQX >  MIDDLETOWNUPCW_WQX-SW-61

Upstream St Helena (MIDDLETOWNUPCW_WQX-SW-61) 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 Middletown Rancheria of Pomo Indians of California (Tribal) (identifier MIDDLETOWNUPCW_WQX), has the name "Upstream St Helena" and has the identifier MIDDLETOWNUPCW_WQX-SW-61. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)18020162.

This site is located in Lake County County, California at 38.7322600000 degrees latitude and -122.6185100000 degrees longitude using the datum UNKWN. 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 "MIDDLETOWNUPCW_WQX-SW-61" 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, Non-metals 2022 - 2023
Inorganics, Minor, Metals 2022 - 2023
Inorganics, Minor, Non-metals 2022 - 2023
Microbiological 2023 - 2023
Not Assigned 2022 - 2022
Nutrient 2022 - 2023
Organics, Other 2022 - 2022
Organics, Pesticide 2022 - 2022
Physical 2022 - 2023
Stable Isotopes 2022 - 2022
*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 MIDDLETOWNUPCW_WQX
OrganizationFormalName Middletown Rancheria of Pomo Indians of California (Tribal)
MonitoringLocationIdentifier MIDDLETOWNUPCW_WQX-SW-61
MonitoringLocationName Upstream St Helena
MonitoringLocationTypeName River/Stream
HUCEightDigitCode 18020162
LatitudeMeasure 38.7322600000
LongitudeMeasure -122.6185100000
HorizontalCollectionMethodName GPS-Unspecified
HorizontalCoordinateReferenceSystemDatumName UNKWN
CountryCode US
StateCode 06
CountyCode 033
ProviderName STORET