Available data

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

2 data types available - data from 1990-10-01 to 2026-08-19

1 data types available - data from 1941-07-11 to 2026-08-17

2 data types available - data from 1948-03-18 to 2026-06-30

88 Observed properties (data types) available - with data from 1953-10-18 to 2020-10-27

501 Sampling activities

2 data types available - with data from 1942-03-19 to 2025-05-24

1 data types available - data from 1941-07-11 to 2026-08-17

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Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	01097000	n/a
Location name	ASSABET RIVER AT MAYNARD, MA	n/a
Site type	Stream	ST
Decimal latitude (WGS84)	42.4320380165574	n/a
Decimal longitude (WGS84)	-71.4497848035806	n/a
Latitude-longitude method	Interpolated from map	M
Latitude-longitude accuracy	Accurate to + or - 1 sec.	S
District	Massachusetts	25
State	Massachusetts	25
County	Middlesex County	017
Country	United States of America	n/a
Altitude of gage/land surface	146 feet	n/a
Method altitude determined	Interpolated from Digital Elevation Model	N
Altitude accuracy	4.3 feet	n/a
Altitude datum	North American Vertical Datum of 1988	NAVD88
Subbasin hydrologic unit	Concord River	01070005
Drainage basin		n/a
Date of first construction		n/a
Drainage area	116 square miles	n/a
Contributing drainage area	116 square miles	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