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Available data

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Continuous data

3 data types available - data from 1986-10-14 to 2026-08-03

Daily data

2 data types available - data from 1939-04-18 to 2026-08-02

Field measurements

2 data types available - data from 1940-11-22 to 2026-06-18

Discrete sample data

88 Observed properties (data types) available - with data from 1963-03-13 to 1999-08-24

239 Sampling activities

Statistical tables for select daily data types

2 data types available - data from 1939-04-18 to 2026-08-01

Important information about this monitoring location

The elevation of this station has been determined to be 322.21 feet above NAVD 1988. To obtain stream water-surface elevation values in NAVD 1988 add 322.21 feet to gage height values.

Location details and information

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Operated in cooperation with:

US Army Corps of Engineers - Fort Worth District

USGS - Federal Priority Streamgages

Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	08172000	n/a
Location name	San Marcos Rv at Luling, TX	n/a
Site type	Stream	ST
Decimal latitude (WGS84)	29.666338848553373	n/a
Decimal longitude (WGS84)	-97.65085611912131	n/a
Latitude-longitude method	Interpolated from map	M
Latitude-longitude accuracy	Accurate to + or - 5 sec.	F
District	Texas	48
State	Texas	48
County	Caldwell County	055
Country	United States of America	n/a
Altitude of gage/land surface	322.21 feet	n/a
Method altitude determined	GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System	X
Altitude accuracy	0.17 feet	n/a
Altitude datum	North American Vertical Datum of 1988	NAVD88
Subbasin hydrologic unit	San Marcos	12100203
Drainage basin		n/a
Date of first construction		n/a
Drainage area	838 square miles	n/a
Contributing drainage area	838 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 Marcos Rv at Luling, TX - USGS-08172000