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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 >  NWIS >  USGS-IA >  USGS-404506094140900

Lake Ayr Inlet near Mount Ayr, IA (USGS-404506094140900) site data in the Water Quality Portal

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

This lake, reservoir, impoundment site, maintained by the USGS Iowa Water Science Center (identifier USGS-IA), has the name "Lake Ayr Inlet near Mount Ayr, IA" and has the identifier USGS-404506094140900. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)10280101. See more details of this site the the USGS NWIS Web page for this site.

This site is located in Ringgold County County, Iowa at 40.75165889000000 degrees latitude and -94.2360652000000 degrees longitude using the datum NAD83. The horizontal location collection method was "Interpolated from MAP." and the accuracy is 1 seconds. 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 "USGS-404506094140900" 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*
Information 1993 - 1995
Inorganics, Major, Non-metals 1993 - 1995
Organics, Other 1993 - 1995
Organics, Pesticide 1993 - 1995
Physical 1993 - 1995
*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 USGS-IA
OrganizationFormalName USGS Iowa Water Science Center
MonitoringLocationIdentifier USGS-404506094140900
MonitoringLocationName Lake Ayr Inlet near Mount Ayr, IA
MonitoringLocationTypeName Lake, Reservoir, Impoundment
HUCEightDigitCode 10280101
LatitudeMeasure 40.75165889000000
LongitudeMeasure -94.2360652000000
SourceMapScaleNumeric 24000
HorizontalAccuracyMeasure/MeasureValue 1
HorizontalAccuracyMeasure/MeasureUnitCode seconds
HorizontalCollectionMethodName Interpolated from MAP.
HorizontalCoordinateReferenceSystemDatumName NAD83
CountryCode US
StateCode 19
CountyCode 159
ProviderName NWIS