USGS Groundwater for USA: Water Levels -- 1 sites

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Groundwater levels for the Nation

Middlesex County, Massachusetts

Latitude 42°26'51", Longitude 71°20'02" NAD27

Land-surface elevation 215.70 feet above NGVD29

The depth of the well is 80.0 feet below land surface.

The depth of the hole is 81.0 feet below land surface.

Date	Time	? Water-level date-time accuracy	? Parameter code	Water level, feet below land surface	Water level, feet above specific vertical datum	Referenced vertical datum	? Status	? Method of measurement	? Measuring agency	? Source of measurement	? Water-level approval status

1987-12-02		D	62610		150.70	NGVD29	1	L			A
1987-12-02		D	62611		149.84	NAVD88	1	L			A
1987-12-02		D	72019	65.00			1	L			A
1998-10-20	18:05 UTC	m	62610		154.62	NGVD29	1	T	USGS	S	A
1998-10-20	18:05 UTC	m	62611		153.76	NAVD88	1	T	USGS	S	A
1998-10-20	18:05 UTC	m	72019	61.08			1	T	USGS	S	A
1998-11-04	21:41 UTC	m	62610		154.26	NGVD29	1	T	USGS	S	A
1998-11-04	21:41 UTC	m	62611		153.40	NAVD88	1	T	USGS	S	A
1998-11-04	21:41 UTC	m	72019	61.44			1	T	USGS	S	A
1998-12-23	20:00 UTC	m	62610		153.33	NGVD29	1	T	USGS	S	A
1998-12-23	20:00 UTC	m	62611		152.47	NAVD88	1	T	USGS	S	A
1998-12-23	20:00 UTC	m	72019	62.37			1	T	USGS	S	A
1999-03-23		D	62610		152.64	NGVD29	1	T	USGS	S	A
1999-03-23		D	62611		151.78	NAVD88	1	T	USGS	S	A
1999-03-23		D	72019	63.06			1	T	USGS	S	A
1999-04-30		D	62610		152.95	NGVD29	1	T	USGS	S	A
1999-04-30		D	62611		152.09	NAVD88	1	T	USGS	S	A
1999-04-30		D	72019	62.75			1	T	USGS	S	A
1999-05-28		D	62610		152.84	NGVD29	1	T	USGS	S	A
1999-05-28		D	62611		151.98	NAVD88	1	T	USGS	S	A
1999-05-28		D	72019	62.86			1	T	USGS	S	A
1999-07-19		D	62610		152.39	NGVD29	1	T	USGS	S	A
1999-07-19		D	62611		151.53	NAVD88	1	T	USGS	S	A
1999-07-19		D	72019	63.31			1	T	USGS	S	A
1999-08-25		D	62610		151.88	NGVD29	1	T	USGS	S	A
1999-08-25		D	62611		151.02	NAVD88	1	T	USGS	S	A
1999-08-25		D	72019	63.82			1	T	USGS	S	A

Date	Time	? Water-level date-time accuracy	? Parameter code	Water level, feet below land surface	Water level, feet above specific vertical datum	Referenced vertical datum	? Status	? Method of measurement	? Measuring agency	? Source of measurement	? Water-level approval status

**Explanation**
Section	Code	Description
Water-level date-time accuracy	D	Date is accurate to the Day
Water-level date-time accuracy	m	Date is accurate to the Minute
Parameter code	62610	Groundwater level above NGVD 1929, feet
Parameter code	62611	Groundwater level above NAVD 1988, feet
Parameter code	72019	Depth to water level, feet below land surface
Referenced vertical datum	NAVD88	North American Vertical Datum of 1988
Referenced vertical datum	NGVD29	National Geodetic Vertical Datum of 1929
Status	1	Static
Method of measurement	L	Interpreted from geophysical logs.
Method of measurement	T	Electric-tape measurement.
Measuring agency		Not determined
Measuring agency	USGS	U.S. Geological Survey
Source of measurement		Not determined
Source of measurement	S	Measured by personnel of reporting agency.
Water-level approval status	A	Approved for publication -- Processing and review completed.

U.S. Department of the Interior | U.S. Geological Survey
Title: Groundwater for USA: Water Levels
URL: https://staging.waterdata.usgs.gov/nwis/gwlevels?

Page Contact Information: USGS Water Data Support Team
Page Last Modified: 2025-03-01 14:18:04 EST
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