Available data

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

Learn about the data collection categories

Continuous data

3 data types available - data from 1991-10-11 to 2026-08-09

Daily data

2 data types available - data from 1972-10-01 to 2026-08-08

Field measurements

3 data types available - data from 1972-09-17 to 2026-07-13

Discrete sample data

97 Observed properties (data types) available - with data from 1973-04-06 to 2020-07-15

122 Sampling activities

Peak measurements

2 data types available - with data from 1973-05-13 to 2025-05-17

Statistical tables for select daily data types

2 data types available - data from 1972-10-01 to 2026-08-08

Important information about this monitoring location

The elevation of this station has been determined to be 1852.1 feet above NAVD 1988. To obtain stream water-surface elevation values in NAVD 1988 add 1852.1 feet to gage height values.

Location details and information

Zoom out to see link to My Favorites

Use Explore USGS Water Data to discover additional data near this location

Operated in cooperation with:

USGS - Federal Priority Streamgages

Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	15200280	n/a
Location name	GULKANA R AT SOURDOUGH AK	n/a
Site type	Stream	ST
Decimal latitude (WGS84)	62.520833	n/a
Decimal longitude (WGS84)	-145.530833	n/a
Latitude-longitude method	Interpolated from map	M
Latitude-longitude accuracy	Accurate to + or - 10 sec.	T
District	Alaska	02
State	Alaska	02
County	Copper River Census Area	066
Country	United States of America	n/a
Altitude of gage/land surface	1852.1 feet	n/a
Method altitude determined	GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System	X
Altitude accuracy	0.1 feet	n/a
Altitude datum	North American Vertical Datum of 1988	NAVD88
Subbasin hydrologic unit	Middle Copper River	19020102
Drainage basin		n/a
Date of first construction		n/a
Drainage area	1760 square miles	n/a
Contributing drainage area		n/a
Time zone abbreviation	AKST	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

Monitoring location Gulkana R at Sourdough AK - USGS-15200280