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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 >  NWIS >  USGS-SD >  USGS-06485500

BIG SIOUX RIVER AT AKRON,IA (USGS-06485500) site data in the Water Quality Portal

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

This stream site, maintained by the USGS South Dakota Water Science Center (identifier USGS-SD), has the name "BIG SIOUX RIVER AT AKRON,IA" and has the identifier USGS-06485500. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)10170203. See more details of this site the the USGS NWIS Web page for this site. This site has a drainage area of 7879 sq mi and the contributing drainage area is 6995 sq mi.

This site is located in Plymouth County County, Iowa at 42.83752049000000 degrees latitude and -96.5619219000000 degrees longitude using the datum NAD83. The horizontal location collection method was "Interpolated from MAP." and the accuracy is 1 minutes. The source map scale is 1:24000. This site is at an elevation of 1119.53 feet and the accuracy of the elevation measurement, collected using the method "Level or other surveyed method." is .01 feet. The vertical coordinate reference system is NAVD88.

To download the metadata about this site along with water quality data, go to the Portal Page and enter "USGS-06485500" 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 2004 - 2010
Biological, Algae, Phytoplankton 1974 - 2010
Biological, Algae, Phytoplankton, Cyanobacteria, Periphyton 1975 - 1980
Biological, Algae, Phytoplankton, Photosynthetic Pigments 1975 - 2010
Biological, Counts 1974 - 1981
Biological, Fish 1994 - 2010
Biological, Photosynthetic Pigments 1975 - 1980
Information 1946 - 2010
Inorganics, Major, Metals 1960 - 1994
Inorganics, Major, Non-metals 1960 - 2010
Inorganics, Minor, Metals 1960 - 2005
Inorganics, Minor, Non-metals 1960 - 2005
Microbiological 1970 - 2010
Nutrient 1960 - 2010
Organics, Other 1966 - 2010
Organics, PCBs 1972 - 2008
Organics, Pesticide 1972 - 2010
Physical 1946 - 2015
Radiochemical 1981 - 2005
Sediment 1949 - 2010
*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-SD
OrganizationFormalName USGS South Dakota Water Science Center
MonitoringLocationIdentifier USGS-06485500
MonitoringLocationName BIG SIOUX RIVER AT AKRON,IA
MonitoringLocationTypeName Stream
HUCEightDigitCode 10170203
DrainageAreaMeasure/MeasureValue 7879
DrainageAreaMeasure/MeasureUnitCode sq mi
ContributingDrainageAreaMeasure/MeasureValue 6995
ContributingDrainageAreaMeasure/MeasureUnitCode sq mi
LatitudeMeasure 42.83752049000000
LongitudeMeasure -96.5619219000000
SourceMapScaleNumeric 24000
HorizontalAccuracyMeasure/MeasureValue 1
HorizontalAccuracyMeasure/MeasureUnitCode minutes
HorizontalCollectionMethodName Interpolated from MAP.
HorizontalCoordinateReferenceSystemDatumName NAD83
VerticalMeasure/MeasureValue 1119.53
VerticalMeasure/MeasureUnitCode feet
VerticalAccuracyMeasure/MeasureValue .01
VerticalAccuracyMeasure/MeasureUnitCode feet
VerticalCollectionMethodName Level or other surveyed method.
VerticalCoordinateReferenceSystemDatumName NAVD88
CountryCode US
StateCode 19
CountyCode 149
ProviderName NWIS