Available data

Select data types to graph from categories based on the way the data were collected.

3 data types available - data from 1990-10-01 to 2026-08-29

2 data types available - data from 1945-10-01 to 2026-08-27

2 data types available - data from 1945-09-27 to 2026-07-28

40 Observed properties (data types) available - with data from 1949-08-09 to 2015-08-04

459 Sampling activities

2 data types available - with data from 1946-01-08 to 2025-08-13

2 data types available - data from 1945-10-01 to 2026-08-27

Zoom out to see link to My Favorites

Operated in cooperation with:

Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	06471500	n/a
Location name	ELM RIVER AT WESTPORT, SD	n/a
Site type	Stream	ST
Decimal latitude (WGS84)	45.656111	n/a
Decimal longitude (WGS84)	-98.496667	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	Brown County	013
Country	United States of America	n/a
Altitude of gage/land surface	1310.04 feet	n/a
Method altitude determined	GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System	X
Altitude accuracy	0.06 feet	n/a
Altitude datum	North American Vertical Datum of 1988	NAVD88
Subbasin hydrologic unit	Elm	10160004
Drainage basin		n/a
Date of first construction		n/a
Drainage area	1505 square miles	n/a
Contributing drainage area	1210 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