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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 >  OST_SHPD >  OST_SHPD-1398

Millwood Lake (OST_SHPD-1398) site data in the Water Quality Portal

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

This reservoir site, maintained by the USEPA, Office of Water, Office of Science and Technology, Standards and Health Protection Division (identifier OST_SHPD), has the name "Millwood Lake" and has the identifier OST_SHPD-1398. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)11140109.

This site is located in Little River County County, Arkansas at 33.7453000000 degrees latitude and -94.0364000000 degrees longitude using the datum UNKWN. 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 "OST_SHPD-1398" 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 2002 - 2002
Inorganics, Minor, Non-metals 2002 - 2002
Not Assigned 2002 - 2002
Organics, Other 2002 - 2002
Organics, PCBs 2002 - 2002
Organics, Pesticide 2002 - 2002
Physical 2002 - 2002
Stable Isotopes 2002 - 2002
*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 OST_SHPD
OrganizationFormalName USEPA, Office of Water, Office of Science and Technology, Standards and Health Protection Division
MonitoringLocationIdentifier OST_SHPD-1398
MonitoringLocationName Millwood Lake
MonitoringLocationTypeName Reservoir
HUCEightDigitCode 11140109
LatitudeMeasure 33.7453000000
LongitudeMeasure -94.0364000000
HorizontalCollectionMethodName Address Matching-Other
HorizontalCoordinateReferenceSystemDatumName UNKWN
CountryCode US
StateCode 05
CountyCode 081
ProviderName STORET