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Available data

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Continuous data

4 data types available - data from 2007-10-01 to 2026-10-14

Daily data

3 data types available - data from 1997-08-09 to 2026-10-13

Field measurements

2 data types available - data from 1993-08-11 to 2021-09-08

Discrete sample data

0 observed properties (data types) available

Statistical tables for select daily data types

3 data types available - data from 1997-08-09 to 2026-10-12

Important information about this monitoring location

Datum of gage is 0.00 ft above NGVD29. To obtain reservoir water-surface elevations in NAVD 1988 subtract .026 feet from NGVD29 elevations. To obtain Bexar Medina Atascosa Water Control and Improvement District (BMA) elevations add 7.81 ft to NGVD29 elevations.

Location details and information

Available location images

Medina Lake near San Antonio

Medina Lake near San Antonio

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Operated in cooperation with:

Bexar-Medina-Atascosa Counties, Texas, Water Control and Improvement District 1

USGS - Cooperative Matching Funds

Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	08179500	n/a
Location name	Medina Lk nr San Antonio, TX	n/a
Site type	Lake, Reservoir, Impoundment	LK
Decimal latitude (WGS84)	29.540228535758775	n/a
Decimal longitude (WGS84)	-98.93394738403089	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	Medina County	325
Country	United States of America	n/a
Altitude of gage/land surface	0	n/a
Method altitude determined	Level or other surveyed method.	L
Altitude accuracy	0.1 feet	n/a
Altitude datum	National Geodetic Vertical Datum of 1929	NGVD29
Subbasin hydrologic unit	Medina	12100302
Drainage basin		n/a
Date of first construction		n/a
Drainage area	634 square miles	n/a
Contributing drainage area	634 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 Medina Lk nr San Antonio, TX - USGS-08179500