Available data

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3 data types available - data from 1988-10-01 to 2026-07-31

1 data types available - data from 1910-12-01 to 2026-07-29

2 data types available - data from 1938-03-02 to 2026-06-18

99 Observed properties (data types) available - with data from 2009-09-10 to 2009-12-08

4 Sampling activities

1 data types available - data from 1910-12-01 to 2026-07-29

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Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	11098000	n/a
Location name	ARROYO SECO NR PASADENA CA	n/a
Site type	Stream	ST
Decimal latitude (WGS84)	34.222225844345445	n/a
Decimal longitude (WGS84)	-118.17755800149571	n/a
Latitude-longitude method	Interpolated from map	M
Latitude-longitude accuracy	Accurate to + or - 5 sec.	F
District	California	06
State	California	06
County	Los Angeles County	037
Country	United States of America	n/a
Altitude of gage/land surface	1400.35 feet	n/a
Method altitude determined	GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System	X
Altitude accuracy	0.16 feet	n/a
Altitude datum	North American Vertical Datum of 1988	NAVD88
Subbasin hydrologic unit	Los Angeles	18070105
Drainage basin		n/a
Date of first construction		n/a
Drainage area	16 square miles	n/a
Contributing drainage area		n/a
Time zone abbreviation	PST	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