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

WQP Home >  Providers >  STORET >  21FLSJWM >  21FLSJWM-JOHNSLK

Johns Lake (21FLSJWM-JOHNSLK) site data in the Water Quality Portal

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

This lake site, maintained by the St. Johns Water Management District (Florida) (identifier 21FLSJWM), has the name "Johns Lake" and has the identifier 21FLSJWM-JOHNSLK. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)03080102.

This site is located in Orange County County, Florida at 28.5515611 degrees latitude and -81.6204278 degrees longitude using the datum WGS84. No horizontal location accuracy metadata is available. This site is at an elevation of 0 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 "21FLSJWM-JOHNSLK" 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*
Biological 1998 - 1998
Information 1998 - 2006
Inorganics, Major, Metals 1998 - 2006
Inorganics, Major, Non-metals 1998 - 2006
Inorganics, Minor, Metals 1998 - 2006
Inorganics, Minor, Non-metals 1998 - 2006
Nutrient 1998 - 2006
Organics, Other 1998 - 2006
Physical 1998 - 2006
Stable Isotopes 1998 - 1998
*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 21FLSJWM
OrganizationFormalName St. Johns Water Management District (Florida)
MonitoringLocationIdentifier 21FLSJWM-JOHNSLK
MonitoringLocationName Johns Lake
MonitoringLocationTypeName Lake
HUCEightDigitCode 03080102
LatitudeMeasure 28.5515611
LongitudeMeasure -81.6204278
HorizontalCollectionMethodName GPS Code (Pseudo Range) Differential
HorizontalCoordinateReferenceSystemDatumName WGS84
VerticalMeasure/MeasureValue 0
VerticalMeasure/MeasureUnitCode ft
VerticalCoordinateReferenceSystemDatumName Unknown
CountryCode US
StateCode 12
CountyCode 095
ProviderName STORET