Available data

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2 data types available - data from 1986-09-01 to 2026-07-31

2 data types available - data from 1951-07-26 to 2026-07-29

2 data types available - data from 1954-10-10 to 2026-06-24

109 Observed properties (data types) available - with data from 1974-10-10 to 2000-07-13

96 Sampling activities

2 data types available - data from 1951-07-26 to 2026-07-29

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Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	05533000	n/a
Location name	FLAG CREEK NEAR WILLOW SPRINGS, IL	n/a
Site type	Stream	ST
Decimal latitude (WGS84)	41.7389444444444	n/a
Decimal longitude (WGS84)	-87.8968611111111	n/a
Latitude-longitude method	GNSS2 - Level 1 Quality Survey Grade Global Navigation Satellite System	X
Latitude-longitude accuracy	Accurate to + or - 5 sec.	F
District	Illinois	17
State	Illinois	17
County	Cook County	031
Country	United States of America	n/a
Altitude of gage/land surface	606.02 feet	n/a
Method altitude determined	GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System	X
Altitude accuracy	0.03 feet	n/a
Altitude datum	North American Vertical Datum of 1988	NAVD88
Subbasin hydrologic unit	Des Plaines	07120004
Drainage basin		n/a
Date of first construction		n/a
Drainage area	16.5 square miles	n/a
Contributing drainage area	16.5 square miles	n/a
Time zone abbreviation	CST	n/a
Site honors Daylight Saving Time	N	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