Important Legacy real-time page

Available data

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

Learn about the data collection categories

Continuous data

1 data types available - data from 2023-08-24 to 2026-08-08

Daily data

2 data types available - data from 1930-04-01 to 2001-09-29

Field measurements

3 data types available - data from 1987-10-05 to 2023-08-23

Discrete sample data

35 Observed properties (data types) available - with data from 1964-03-09 to 1984-04-30

31 Sampling activities

Statistical tables for select daily data types

2 data types available - data from 2000-10-01 to 2001-09-29

Important information about this monitoring location

Datum of gage has been determined to be 0.00 feet above NAVD 1988. To obtain reservoir water-surface elevations in NAVD 1988 add 0.00 feet to gage height values

Location details and information

Zoom out to see link to My Favorites

Use Explore USGS Water Data to discover additional data near this location

Operated in cooperation with:

City of San Angelo

Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	08132000	n/a
Location name	Lk Nasworthy nr San Angelo, TX	n/a
Site type	Lake, Reservoir, Impoundment	LK
Decimal latitude (WGS84)	31.3887738353276	n/a
Decimal longitude (WGS84)	-100.478427376485	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	GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System	X
Altitude accuracy	0.25 feet	n/a
Altitude datum	North American Vertical Datum of 1988	NAVD88
Subbasin hydrologic unit	South Concho	12090102
Drainage basin		n/a
Date of first construction		n/a
Drainage area	3975 square miles	n/a
Contributing drainage area	2920 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 Lk Nasworthy nr San Angelo, TX - USGS-08132000