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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 >  TCEQMAIN >  TCEQMAIN-12096

GRANGER LK IN SAN GABRIEL ARM (TCEQMAIN-12096) site data in the Water Quality Portal

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

This reservoir site, maintained by the Texas Commission on Environmental Quality (identifier TCEQMAIN), has the name "GRANGER LK IN SAN GABRIEL ARM" and has the identifier TCEQMAIN-12096. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)12070205.

This site is located in Williamson County County, Texas at 30.6625000000 degrees latitude and -97.4014000000 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 "TCEQMAIN-12096" 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, Cyanobacteria 1981 - 2005
Biological, Algae, Phytoplankton 1981 - 2025
Information 1981 - 2025
Inorganics, Major, Metals 1995 - 1996
Inorganics, Major, Non-metals 1981 - 2025
Inorganics, Minor, Metals 1995 - 1997
Inorganics, Minor, Non-metals 1995 - 1997
Microbiological 1981 - 2025
Nutrient 1981 - 2025
Organics, Other 1991 - 2025
Physical 1981 - 2025
Stable Isotopes 1996 - 1997
*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 TCEQMAIN
OrganizationFormalName Texas Commission on Environmental Quality
MonitoringLocationIdentifier TCEQMAIN-12096
MonitoringLocationName GRANGER LK IN SAN GABRIEL ARM
MonitoringLocationTypeName Reservoir
HUCEightDigitCode 12070205
LatitudeMeasure 30.6625000000
LongitudeMeasure -97.4014000000
HorizontalCollectionMethodName Interpolation-Photo
HorizontalCoordinateReferenceSystemDatumName NAD83
CountryCode US
StateCode 48
CountyCode 491
ProviderName STORET