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Available data

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Continuous data

2 data types available - data from 1991-10-01 to 2026-08-07

Daily data

2 data types available - data from 1959-04-30 to 2026-08-05

Field measurements

2 data types available - data from 1959-10-04 to 2026-06-17

Discrete sample data

27 Observed properties (data types) available - with data from 1962-04-04 to 1966-06-22

18 Sampling activities

Peak measurements

2 data types available - with data from 1959-05-11 to 2025-06-05

Statistical tables for select daily data types

2 data types available - data from 1959-04-30 to 2026-08-05

Important information about this monitoring location

The elevation of this station has been determined to be 430.70 feet above NAVD 1988. To obtain stream water-surface elevation values in NAVD 1988 add 430.70 feet to gage height values.

Location details and information

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Operated in cooperation with:

Texas Water Development Board

USGS - Cooperative Matching Funds

Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	08172400	n/a
Location name	Plum Ck at Lockhart, TX	n/a
Site type	Stream	ST
Decimal latitude (WGS84)	29.922997651376004	n/a
Decimal longitude (WGS84)	-97.67919102199528	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	430.7 feet	n/a
Method altitude determined	GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System	X
Altitude accuracy	0.18 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	112 square miles	n/a
Contributing drainage area	112 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 Plum Ck at Lockhart, TX - USGS-08172400