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Available data

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Continuous data

2 data types available - data from 1996-07-01 to 2026-08-19

Daily data

2 data types available - data from 1939-09-17 to 2026-08-18

Field measurements

2 data types available - data from 1939-05-16 to 2026-08-06

Discrete sample data

177 Observed properties (data types) available - with data from 1967-10-18 to 2001-08-09

71 Sampling activities

Peak measurements

2 data types available - with data from 1935-06-14 to 2025-07-05

Statistical tables for select daily data types

2 data types available - data from 1939-09-17 to 2026-08-18

Important information about this monitoring location

The elevation of this station has been determined to be 970.08 feet above NAVD 1988. To obtain stream water-surface elevation values in NAVD 1988 add 970.08 feet to gage height values.

Location details and information

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Operated in cooperation with:

Lower Colorado River Authority

USGS - Cooperative Matching Funds

Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	08151500	n/a
Location name	Llano Rv at Llano, TX	n/a
Site type	Stream	ST
Decimal latitude (WGS84)	30.7513041125954	n/a
Decimal longitude (WGS84)	-98.66977734287708	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	Llano County	299
Country	United States of America	n/a
Altitude of gage/land surface	970.08 feet	n/a
Method altitude determined	GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System	X
Altitude accuracy	0.21 feet	n/a
Altitude datum	North American Vertical Datum of 1988	NAVD88
Subbasin hydrologic unit	Llano	12090204
Drainage basin		n/a
Date of first construction		n/a
Drainage area	4197 square miles	n/a
Contributing drainage area	4192 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 Llano Rv at Llano, TX - USGS-08151500