Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

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 >  NWIS >  USGS-TX >  USGS-08178345

Martinez Ck at W Hildebrand Ave, San Antonio, TX (USGS-08178345) site data in the Water Quality Portal

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

This stream site, maintained by the USGS Texas Water Science Center (identifier USGS-TX), has the name "Martinez Ck at W Hildebrand Ave, San Antonio, TX" and has the identifier USGS-08178345. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)12100301. See more details of this site the the USGS NWIS Web page for this site. This site has a drainage area of 4.5052 sq mi.

This site is located in Bexar County County, Texas at 29.46416667000000 degrees latitude and -98.5152778000000 degrees longitude using the datum NAD83. The horizontal location collection method was "Interpolated from Digital MAP." and the accuracy is 1 seconds. The source map scale is 1:24000. This site is at an elevation of 690 feet and the accuracy of the elevation measurement, collected using the method "Interpolated from Digital Elevation Model" is 10 feet. The vertical coordinate reference system is NAVD88.

To download the metadata about this site along with water quality data, go to the Portal Page and enter "USGS-08178345" 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*
Information 2014 - 2014
Inorganics, Major, Metals 2014 - 2014
Inorganics, Major, Non-metals 2014 - 2014
Inorganics, Minor, Metals 2014 - 2014
Inorganics, Minor, Non-metals 2014 - 2014
Nutrient 2014 - 2014
Organics, BDEs 2014 - 2014
Organics, Other 2014 - 2014
Organics, PCBs 2014 - 2014
Organics, Pesticide 2014 - 2014
Physical 2014 - 2014
Radiochemical 2014 - 2014
*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 USGS-TX
OrganizationFormalName USGS Texas Water Science Center
MonitoringLocationIdentifier USGS-08178345
MonitoringLocationName Martinez Ck at W Hildebrand Ave, San Antonio, TX
MonitoringLocationTypeName Stream
HUCEightDigitCode 12100301
DrainageAreaMeasure/MeasureValue 4.5052
DrainageAreaMeasure/MeasureUnitCode sq mi
LatitudeMeasure 29.46416667000000
LongitudeMeasure -98.5152778000000
SourceMapScaleNumeric 24000
HorizontalAccuracyMeasure/MeasureValue 1
HorizontalAccuracyMeasure/MeasureUnitCode seconds
HorizontalCollectionMethodName Interpolated from Digital MAP.
HorizontalCoordinateReferenceSystemDatumName NAD83
VerticalMeasure/MeasureValue 690
VerticalMeasure/MeasureUnitCode feet
VerticalAccuracyMeasure/MeasureValue 10
VerticalAccuracyMeasure/MeasureUnitCode feet
VerticalCollectionMethodName Interpolated from Digital Elevation Model
VerticalCoordinateReferenceSystemDatumName NAVD88
CountryCode US
StateCode 48
CountyCode 029
ProviderName NWIS