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WQP Home >  Providers >  NWIS >  USGS-PR >  USGS-50094500

RIO NIGUA AT ARROYO, PR (USGS-50094500) 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 Puerto Rico Water Science Center (identifier USGS-PR), has the name "RIO NIGUA AT ARROYO, PR" and has the identifier USGS-50094500. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)21010004. See more details of this site the the USGS NWIS Web page for this site. This site has a drainage area of 8 sq mi.

This site is located in Arroyo Municipio County, Puerto Rico at 17.96746704000000 degrees latitude and -66.0609977800000 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 1:20000. This site is at an elevation of 26.2 feet and the accuracy of the elevation measurement, collected using the method "Interpolated from topographic map." is 3.3 feet. The vertical coordinate reference system is NGVD29.

To download the metadata about this site along with water quality data, go to the Portal Page and enter "USGS-50094500" 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*
Inorganics, Major, Metals 1962 - 1964
Inorganics, Major, Non-metals 1962 - 2011
Inorganics, Minor, Metals 1964 - 1964
Microbiological 2006 - 2011
Nutrient 1964 - 2011
Organics, Other 2010 - 2011
Physical 1962 - 2011
*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-PR
OrganizationFormalName USGS Puerto Rico Water Science Center
MonitoringLocationIdentifier USGS-50094500
MonitoringLocationName RIO NIGUA AT ARROYO, PR
MonitoringLocationTypeName Stream
HUCEightDigitCode 21010004
DrainageAreaMeasure/MeasureValue 8
DrainageAreaMeasure/MeasureUnitCode sq mi
LatitudeMeasure 17.96746704000000
LongitudeMeasure -66.0609977800000
SourceMapScaleNumeric 20000
HorizontalAccuracyMeasure/MeasureValue 1
HorizontalAccuracyMeasure/MeasureUnitCode seconds
HorizontalCollectionMethodName Interpolated from MAP.
HorizontalCoordinateReferenceSystemDatumName NAD83
VerticalMeasure/MeasureValue 26.2
VerticalMeasure/MeasureUnitCode feet
VerticalAccuracyMeasure/MeasureValue 3.3
VerticalAccuracyMeasure/MeasureUnitCode feet
VerticalCollectionMethodName Interpolated from topographic map.
VerticalCoordinateReferenceSystemDatumName NGVD29
CountryCode US
StateCode 72
CountyCode 015
ProviderName NWIS