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WQP Home >  Providers >  STORET >  21IOWA >  21IOWA-10170003

Winnebago River Downstream of Mason City (21IOWA-10170003) 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 Iowa Dept. of Natural Resources (identifier 21IOWA), has the name "Winnebago River Downstream of Mason City" and has the identifier 21IOWA-10170003. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)07080203.

This site is located in Cerro Gordo County County, Iowa at 43.1257000 degrees latitude and -93.1231000 degrees longitude using the datum NAD27. No horizontal location accuracy metadata is available. This site is at an elevation of 1100 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 "21IOWA-10170003" 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.

Leaflet USGS The National Map: National Boundaries Dataset, 3DEP Elevation Program, Geographic Names Information System, National Hydrography Dataset, National Land Cover Database, National Structures Dataset, and National Transportation Dataset; USGS Global Ecosystems; U.S. Census Bureau TIGER/Line data; USFS Road data; Natural Earth Data; U.S. Department of State HIU; NOAA National Centers for Environmental Information. Data refreshed February, 2025.

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 1999 - 2009
Information 2001 - 2008
Inorganics, Major, Non-metals 1999 - 2009
Inorganics, Minor, Metals 1999 - 2008
Inorganics, Minor, Non-metals 1999 - 2008
Microbiological 1999 - 2009
Not Assigned 2008 - 2008
Nutrient 1999 - 2009
Organics, Other 1999 - 2008
Organics, PCBs 1999 - 2008
Organics, Pesticide 1999 - 2008
Physical 1999 - 2009
*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 21IOWA
OrganizationFormalName Iowa Dept. of Natural Resources
MonitoringLocationIdentifier 21IOWA-10170003
MonitoringLocationName Winnebago River Downstream of Mason City
MonitoringLocationTypeName River/Stream
MonitoringLocationDescriptionText County Road S56 bridge near Portland (250th Street).¶Downstream City Site.
HUCEightDigitCode 07080203
LatitudeMeasure 43.1257000
LongitudeMeasure -93.1231000
SourceMapScaleNumeric 000
HorizontalCollectionMethodName Interpolation-Map
HorizontalCoordinateReferenceSystemDatumName NAD27
VerticalMeasure/MeasureValue 1100
VerticalMeasure/MeasureUnitCode ft
VerticalCollectionMethodName Topographic Map Interpolation
VerticalCoordinateReferenceSystemDatumName NGVD29
CountryCode US
StateCode 19
CountyCode 033
ProviderName STORET