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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 >  STORET >  11NPSWRD_WQX >  11NPSWRD_WQX-GRPO_04

Hollow Rock Creek (11NPSWRD_WQX-GRPO_04) 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 National Park Service Water Resources Division (identifier 11NPSWRD_WQX), has the name "Hollow Rock Creek" and has the identifier 11NPSWRD_WQX-GRPO_04. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)04010101.

This site is located in Cook County County, Minnesota at 47.9171361100 degrees latitude and -89.7427805600 degrees longitude using the datum NAD83. No horizontal location accuracy metadata is available.

To download the metadata about this site along with water quality data, go to the Portal Page and enter "11NPSWRD_WQX-GRPO_04" 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, Minor, Metals 2009 - 2009
Physical 2009 - 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 11NPSWRD_WQX
OrganizationFormalName National Park Service Water Resources Division
MonitoringLocationIdentifier 11NPSWRD_WQX-GRPO_04
MonitoringLocationName Hollow Rock Creek
MonitoringLocationTypeName River/Stream
MonitoringLocationDescriptionText Collection site for fish samples for mercury project. Database had called this "Holland Creek" which does not exist at GRPO. UW LAX SITE ID 16.
HUCEightDigitCode 04010101
LatitudeMeasure 47.9171361100
LongitudeMeasure -89.7427805600
HorizontalCollectionMethodName GPS-Unspecified
HorizontalCoordinateReferenceSystemDatumName NAD83
CountryCode US
StateCode 27
CountyCode 031
ProviderName STORET