Available data

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2 data types available - data from 1976-02-01 to 2026-08-15

1 data types available - data from 1931-08-04 to 2026-08-13

2 data types available - data from 1931-06-18 to 2026-07-16

78 Observed properties (data types) available - with data from 1952-10-21 to 2006-07-12

209 Sampling activities

2 data types available - with data from 1932-04-01 to 2025-05-27

1 data types available - data from 1931-08-04 to 2026-08-13

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Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	01104500	n/a
Location name	CHARLES RIVER AT WALTHAM, MA	n/a
Site type	Stream	ST
Decimal latitude (WGS84)	42.3723185718895	n/a
Decimal longitude (WGS84)	-71.2336667544231	n/a
Latitude-longitude method	Interpolated from MAP.	M
Latitude-longitude accuracy	Unknown or unspecified.	U
District	Massachusetts	25
State	Massachusetts	25
County	Middlesex County	017
Country	United States of America	n/a
Altitude of gage/land surface	19.21 feet	n/a
Method altitude determined	Unknown.	U
Altitude accuracy	0.01 feet	n/a
Altitude datum	North American Vertical Datum of 1988	NAVD88
Subbasin hydrologic unit	Charles	01090001
Drainage basin		n/a
Date of first construction		n/a
Drainage area	251 square miles	n/a
Contributing drainage area	227 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