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Available data

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Continuous data

2 data types available - data from 2024-10-01 to 2026-08-21

Daily data

1 data types available - data from 1918-05-16 to 2026-08-20

Field measurements

2 data types available - data from 1938-09-22 to 2026-06-04

Discrete sample data

34 Observed properties (data types) available - with data from 1956-12-18 to 1999-09-02

134 Sampling activities

Peak measurements

2 data types available - with data from 1919-03-30 to 2025-05-14

Statistical tables for select daily data types

1 data types available - data from 1918-05-16 to 2026-08-20

Important information about this monitoring location

The elevation of this station has been determined to be 431.17 feet above NAVD 1988. To obtain stream water-surface elevation values in NAVD 1988 add 431.17 feet to gage height values.

Location details and information

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Operated in cooperation with:

US Army Corps of Engineers - New England District

Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	01087000	n/a
Location name	BLACKWATER RIVER NEAR WEBSTER, NH	n/a
Site type	Stream	ST
Decimal latitude (WGS84)	43.2970225223808	n/a
Decimal longitude (WGS84)	-71.6945211633504	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	431.17 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	Contoocook River	01070003
Drainage basin		n/a
Date of first construction		n/a
Drainage area	129 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 Blackwater River Near Webster, NH - USGS-01087000