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Available data

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Continuous data

6 data types available - data from 2007-10-01 to 2026-08-09

Daily data

6 data types available - data from 2007-08-03 to 2026-08-07

Field measurements

2 data types available - data from 2005-06-08 to 2026-08-06

Discrete sample data

55 Observed properties (data types) available - with data from 2006-02-06 to 2006-02-06

18 Sampling activities

Peak measurements

2 data types available - with data from 2008-09-12 to 2025-07-04

Statistical tables for select daily data types

5 data types available - data from 2007-08-03 to 2026-08-07

Important information about this monitoring location

Datum of gage has been determined to be 2109.60 feet above NAVD 1988. To obtain stream water-surface elevations in NAVD 1988 add 2109.60 feet to gage height values

Location details and information

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Operated in cooperation with:

Texas Commission on Environmental Quality

Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	08374550	n/a
Location name	Rio Grande nr Castolon, TX	n/a
Site type	Stream	ST
Decimal latitude (WGS84)	29.1379800182249	n/a
Decimal longitude (WGS84)	-103.524903278422	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	Brewster County	043
Country	United States of America	n/a
Altitude of gage/land surface	2109.6 feet	n/a
Method altitude determined	GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System	X
Altitude accuracy	0.26 feet	n/a
Altitude datum	North American Vertical Datum of 1988	NAVD88
Subbasin hydrologic unit	Big Bend	13040205
Drainage basin		n/a
Date of first construction		n/a
Drainage area		n/a
Contributing drainage area		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 Rio Grande nr Castolon, TX - USGS-08374550