Available data

Select data types to graph from categories based on the way the data were collected.

2 data types available - data from 2007-10-01 to 2026-08-01

2 data types available - data from 1962-10-01 to 2026-07-30

3 data types available - data from 1987-01-05 to 2026-06-24

35 Observed properties (data types) available - with data from 1965-05-04 to 1984-04-30

40 Sampling activities

2 data types available - data from 1990-06-01 to 2026-07-30

Datum of the gage is 0.00 ft. above NGVD29. To obtain reservoir water-surface elevations in NAVD88 add 0.48 ft. to NGVD29 values.

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Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	08131200	n/a
Location name	Twin Buttes Res nr San Angelo, TX	n/a
Site type	Lake, Reservoir, Impoundment	LK
Decimal latitude (WGS84)	31.3821071223152	n/a
Decimal longitude (WGS84)	-100.538429377926	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	Tom Green County	451
Country	United States of America	n/a
Altitude of gage/land surface	0	n/a
Method altitude determined	Reported method of determination.	R
Altitude accuracy	1 feet	n/a
Altitude datum	National Geodetic Vertical Datum of 1929	NGVD29
Subbasin hydrologic unit	South Concho	12090102
Drainage basin		n/a
Date of first construction		n/a
Drainage area	3868 square miles	n/a
Contributing drainage area	2813 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