Available data

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2 data types available - data from 1990-10-01 to 2026-08-06

2 data types available - data from 1928-10-01 to 2026-08-04

2 data types available - data from 1928-10-01 to 2026-07-14

557 Observed properties (data types) available - with data from 1946-03-14 to 2015-09-10

2718 Sampling activities

2 data types available - with data from 1929-03-15 to 2025-07-07

3 data types available - data from 1928-10-01 to 2026-08-04

Available location images

Big Sioux River at Akron

Big Sioux River at Akron

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Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	06485500	n/a
Location name	BIG SIOUX RIVER AT AKRON, IA	n/a
Site type	Stream	ST
Decimal latitude (WGS84)	42.837509120571994	n/a
Decimal longitude (WGS84)	-96.56193056265082	n/a
Latitude-longitude method	Interpolated from MAP.	M
Latitude-longitude accuracy	Accurate to + or - 1 min.	M
District	South Dakota	46
State	Iowa	19
County	Plymouth County	149
Country	United States of America	n/a
Altitude of gage/land surface	1119.53 feet	n/a
Method altitude determined	Level or other surveyed method.	L
Altitude accuracy	0.01 feet	n/a
Altitude datum	North American Vertical Datum of 1988	NAVD88
Subbasin hydrologic unit	Lower Big Sioux	10170203
Drainage basin		n/a
Date of first construction		n/a
Drainage area	7879 square miles	n/a
Contributing drainage area	6995 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