Available data

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3 data types available - data from 1991-05-25 to 2026-08-24

2 data types available - data from 1976-10-01 to 2026-08-22

2 data types available - data from 1976-10-22 to 2026-08-17

9 Observed properties (data types) available - with data from 1977-10-05 to 2015-08-11

394 Sampling activities

2 data types available - with data from 1977-06-16 to 2025-07-29

2 data types available - data from 1976-10-01 to 2026-08-22

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Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	06479525	n/a
Location name	BIG SIOUX RIVER NEAR CASTLEWOOD, SD	n/a
Site type	Stream	ST
Decimal latitude (WGS84)	44.731583	n/a
Decimal longitude (WGS84)	-97.044306	n/a
Latitude-longitude method	Interpolated from map	M
Latitude-longitude accuracy	Accurate to + or - 1 min.	M
District	South Dakota	46
State	South Dakota	46
County	Hamlin County	057
Country	United States of America	n/a
Altitude of gage/land surface	1668.48 feet	n/a
Method altitude determined	GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System	X
Altitude accuracy	0.11 feet	n/a
Altitude datum	North American Vertical Datum of 1988	NAVD88
Subbasin hydrologic unit	Upper Big Sioux	10170201
Drainage basin		n/a
Date of first construction		n/a
Drainage area	1096 square miles	n/a
Contributing drainage area	579 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