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2 data types available - data from 2026-04-06 to 2026-08-07

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2 data types available - data from 2002-01-04 to 2026-06-20

637 Observed properties (data types) available - with data from 1997-06-23 to 2026-06-20

23 Sampling activities

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Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	08180941	n/a
Location name	Culebra Ck in GCSNA nr Helotes, TX	n/a
Site type	Stream	ST
Decimal latitude (WGS84)	29.5391666666667	n/a
Decimal longitude (WGS84)	-98.7513888888889	n/a
Latitude-longitude method	Differential Global Positioning System (DGPS)	D
Latitude-longitude accuracy	Accurate to + or - .1 sec (Differentially-Corrected GPS).	1
District	Texas	48
State	Texas	48
County	Bexar County	029
Country	United States of America	n/a
Altitude of gage/land surface	980 feet	n/a
Method altitude determined	Interpolated from topographic map.	M
Altitude accuracy	10 feet	n/a
Altitude datum	National Geodetic Vertical Datum of 1929	NGVD29
Subbasin hydrologic unit	Medina	12100302
Drainage basin		n/a
Date of first construction		n/a
Drainage area	12.4 square miles	n/a
Contributing drainage area	12.4 square miles	n/a
Time zone abbreviation	CST	n/a
Site honors Daylight Saving Time	Y	n/a
National aquifer		n/a
Local aquifer		n/a
Local aquifer type		n/a
Well depth		n/a
Hole depth		n/a
Source of depth data		n/a