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 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 >  UMC >  UMC-7054/0.1

Lake St. Louis by dam (UMC-7054/0.1) site data in the Water Quality Portal

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

This reservoir site, maintained by the Univ. of Missouri, Columbia (identifier UMC), has the name "Lake St. Louis by dam" and has the identifier UMC-7054/0.1. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)07110009.

This site is located in St. Charles County County, Missouri at 38.8004355033 degrees latitude and -90.7649848859 degrees longitude using the datum NAD83. The horizontal location collection method was "Interpolation-Map" and the accuracy is 12 m. The source map scale is 1:24000.

To download the metadata about this site along with water quality data, go to the Portal Page and enter "UMC-7054/0.1" 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, Algae, Cyanobacteria 1989 - 2015
Biological, Algae, Phytoplankton, Photosynthetic Pigments 1978 - 2015
Information 1978 - 2015
Inorganics, Major, Non-metals 1978 - 1984
Nutrient 1978 - 2015
Physical 1978 - 2015
*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 UMC
OrganizationFormalName Univ. of Missouri, Columbia
MonitoringLocationIdentifier UMC-7054/0.1
MonitoringLocationName Lake St. Louis by dam
MonitoringLocationTypeName Reservoir
MonitoringLocationDescriptionText Closer to the dam than and distinctly separate from 7054/0.15
HUCEightDigitCode 07110009
LatitudeMeasure 38.8004355033
LongitudeMeasure -90.7649848859
SourceMapScaleNumeric 24000
HorizontalAccuracyMeasure/MeasureValue 12
HorizontalAccuracyMeasure/MeasureUnitCode m
HorizontalCollectionMethodName Interpolation-Map
HorizontalCoordinateReferenceSystemDatumName NAD83
CountryCode US
StateCode 29
CountyCode 183
ProviderName STORET