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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 >  OGLALAST >  OGLALAST-YBD

Yellow Bear Reservoir (OGLALAST-YBD) site data in the Water Quality Portal

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

This reservoir site, maintained by the Oglala Sioux Tribe (South Dakota) (identifier OGLALAST), has the name "Yellow Bear Reservoir" and has the identifier OGLALAST-YBD. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)10140201.

This site is located in Bennett County County, South Dakota at 43.3339138900 degrees latitude and -102.0391611100 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 "OGLALAST-YBD" 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.

Leaflet USGS The National Map: National Boundaries Dataset, 3DEP Elevation Program, Geographic Names Information System, National Hydrography Dataset, National Land Cover Database, National Structures Dataset, and National Transportation Dataset; USGS Global Ecosystems; U.S. Census Bureau TIGER/Line data; USFS Road data; Natural Earth Data; U.S. Department of State HIU; NOAA National Centers for Environmental Information. Data refreshed February, 2025.

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*
Microbiological 2018 - 2024
Physical 2023 - 2024
*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 OGLALAST
OrganizationFormalName Oglala Sioux Tribe (South Dakota)
MonitoringLocationIdentifier OGLALAST-YBD
MonitoringLocationName Yellow Bear Reservoir
MonitoringLocationTypeName Reservoir
HUCEightDigitCode 10140201
LatitudeMeasure 43.3339138900
LongitudeMeasure -102.0391611100
HorizontalCollectionMethodName Unknown
HorizontalCoordinateReferenceSystemDatumName UNKWN
CountryCode US
StateCode 46
CountyCode 007
ProviderName STORET