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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 >  STORET >  21NDHDWQ_WQX >  21NDHDWQ_WQX-380730

Froelich Dam - Deepest (21NDHDWQ_WQX-380730) site data in the Water Quality Portal

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

This reservoir site, maintained by the North Dakota Department Of Environmental Quality (identifier 21NDHDWQ_WQX), has the name "Froelich Dam - Deepest" and has the identifier 21NDHDWQ_WQX-380730. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)10130102.

This site is located in Sioux County County, North Dakota at 46.1611100000 degrees latitude and -100.9890000000 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 "21NDHDWQ_WQX-380730" 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, Phytoplankton, Photosynthetic Pigments 1992 - 2023
Biological, Photosynthetic Pigments 2006 - 2023
Information 1992 - 2023
Inorganics, Major, Metals 1993 - 2023
Inorganics, Major, Non-metals 1993 - 2023
Inorganics, Minor, Metals 1993 - 2023
Inorganics, Minor, Non-metals 2006 - 2023
Nutrient 1993 - 2023
Physical 1992 - 2023
*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 21NDHDWQ_WQX
OrganizationFormalName North Dakota Department Of Environmental Quality
MonitoringLocationIdentifier 21NDHDWQ_WQX-380730
MonitoringLocationName Froelich Dam - Deepest
MonitoringLocationTypeName Reservoir
MonitoringLocationDescriptionText 1/8 Mi SE Of Dam
HUCEightDigitCode 10130102
LatitudeMeasure 46.1611100000
LongitudeMeasure -100.9890000000
SourceMapScaleNumeric 24000
HorizontalCollectionMethodName Interpolation-Other
HorizontalCoordinateReferenceSystemDatumName NAD83
CountryCode US
StateCode 38
CountyCode 085
ProviderName STORET