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Available data

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Continuous data

1 data types available - data from 2018-07-18 to 2026-08-06

Daily data

1 data types available - data from 2018-07-18 to 2026-08-05

Field measurements

4 data types available - data from 1992-01-29 to 2026-05-22

Discrete sample data

413 Observed properties (data types) available - with data from 1957-09-10 to 2021-10-26

14 Sampling activities

Statistical tables for select daily data types

1 data types available - data from 2018-07-18 to 2026-08-05

Important information about this monitoring location

The elevation of this station has been determined to be 1150.4 feet above NAVD 1988. To obtain groundwater elevation values in NAVD 1988 add 1150.4 feet to water-level values

Location details and information

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Operated in cooperation with:

USGS - National Groundwater Monitoring Network

Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	292628099401401	n/a
Location name	YP-69-35-602 (Frio Reference Well)	n/a
Site type	Well	GW
Decimal latitude (WGS84)	29.44606288488159	n/a
Decimal longitude (WGS84)	-99.66480086640308	n/a
Latitude-longitude method	Interpolated from map	M
Latitude-longitude accuracy	Accurate to + or - 1 sec.	S
District	Texas	48
State	Texas	48
County	Uvalde County	463
Country	United States of America	n/a
Altitude of gage/land surface	1150.4 feet	n/a
Method altitude determined	GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System	X
Altitude accuracy	0.23 feet	n/a
Altitude datum	North American Vertical Datum of 1988	NAVD88
Subbasin hydrologic unit	Upper Frio	12110106
Drainage basin		n/a
Date of first construction	19570909	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	Edwards-Trinity aquifer system	S500EDRTRN
Local aquifer	Edwards and Associated Limestones	218EDRDA
Local aquifer type	Unconfined single aquifer	U
Well depth	237 feet	n/a
Hole depth	237 feet	n/a
Source of depth data	S	n/a

Monitoring location YP-69-35-602 (Frio Reference Well) - USGS-292628099401401