Available data

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1 data types available - data from 2026-08-03 to 2026-08-12

1 data types available - data from 2026-05-11 to 2026-07-03

2 data types available - data from 1979-04-09 to 2014-06-24

158 Observed properties (data types) available - with data from 1979-04-09 to 1982-09-15

43 Sampling activities

1 data types available - data from 2026-05-11 to 2026-07-03

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Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	01088400	n/a
Location name	MERRIMACK RIVER AT CONCORD, NH	n/a
Site type	Stream	ST
Decimal latitude (WGS84)	43.208858	n/a
Decimal longitude (WGS84)	-71.530303	n/a
Latitude-longitude method	Interpolated from map	M
Latitude-longitude accuracy	Accurate to + or - 1 sec.	S
District	New Hampshire	33
State	New Hampshire	33
County	Merrimack County	013
Country	United States of America	n/a
Altitude of gage/land surface	216.56 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	Winnipesaukee River	01070002
Drainage basin		n/a
Date of first construction		n/a
Drainage area	2300 square miles	n/a
Contributing drainage area		n/a
Time zone abbreviation	EST	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 Merrimack River at Concord, NH - USGS-01088400