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Available data

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Continuous data

3 data types available - data from 2011-02-18 to 2026-07-30

Daily data

2 data types available - data from 2011-02-18 to 2026-07-29

Field measurements

2 data types available - data from 2011-03-29 to 2026-07-16

Discrete sample data

0 observed properties (data types) available

Statistical tables for select daily data types

2 data types available - data from 2011-02-18 to 2026-07-28

Important information about this monitoring location

The elevation of this station has been determined to be 1224.62 feet above NAVD 1988. To obtain stream water-surface elevation values in NAVD 1988 add 1224.62 feet to gage height values

Location details and information

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Operated in cooperation with:

Edwards Aquifer Authority

Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	08180586	n/a
Location name	San Geronimo Ck nr Helotes, TX	n/a
Site type	Stream	ST
Decimal latitude (WGS84)	29.6197277777778	n/a
Decimal longitude (WGS84)	-98.7951527777778	n/a
Latitude-longitude method	Interpolated from digital map	N
Latitude-longitude accuracy	Accurate to + or - .01 sec (Differentially-Corrected GPS).	H
District	Texas	48
State	Texas	48
County	Bexar County	029
Country	United States of America	n/a
Altitude of gage/land surface	1224.62 feet	n/a
Method altitude determined	GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System	X
Altitude accuracy	0.08 feet	n/a
Altitude datum	North American Vertical Datum of 1988	NAVD88
Subbasin hydrologic unit	Medina	12100302
Drainage basin		n/a
Date of first construction		n/a
Drainage area	31.1 square miles	n/a
Contributing drainage area	31.1 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

Monitoring location San Geronimo Ck nr Helotes, TX - USGS-08180586