Onion Ck at Twin Creeks Rd nr Manchaca, TX

Important information about this monitoring location

The elevation of this station has been determined to be 584.16 feet above NAVD 1988. To obtain stream water-surface elevation values in NAVD 1988 add 584.16 feet to gage height values

Location details and information

Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Site identification number	08158827	_n/a
Site name	Onion Ck at Twin Creeks Rd nr Manchaca, TX	_n/a
Site type	Stream	ST
DMS latitude	300734	_n/a
DMS longitude	0974915	_n/a
Decimal latitude	30.12632345	_n/a
Decimal longitude	-97.8211161	_n/a
Latitude-longitude method	Interpolated from MAP.	M
Latitude-longitude accuracy	Accurate to + or - 1 sec.	S
Latitude-longitude datum	North American Datum of 1927	NAD27
Decimal Latitude-longitude datum	North American Datum of 1983	NAD83
District	Texas	48
State	Texas	48
County	Travis County	453
Country	US	_n/a
Land net location description		_n/a
Name of location map	Oak Hill, TX	_n/a
Scale of location map	24000	_n/a
Altitude of Gage/land surface	584.16 feet	_n/a
Method altitude determined	GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System	X
Altitude accuracy	.23 feet	_n/a
Altitude datum	North American Vertical Datum of 1988	NAVD88
Subbasin hydrologic unit	Austin-Travis Lakes	12090205
Drainage basin		_n/a
Topographic setting	Stream channel	C
Flags for instruments at site	NNNNYNNNNNNNNNNNNNNNNNNNNNNNNN	_n/a
Date of first construction		_n/a
Date site established or inventoried	20030227	_n/a
Drainage area	181 square miles	_n/a
Contributing drainage area	181 square miles	_n/a
Time Zone abbreviation	CST	_n/a
Site honors Daylight Saving Time	Y	_n/a
Data reliability		_n/a
Data-other GW files		_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
Project number	8653-00120	_n/a

Operated in cooperation with:

City of Austin