USGS Groundwater for USA: Water Levels -- 1 sites

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Groundwater levels for the Nation

Mchenry County, Illinois

Latitude 42°29'26", Longitude 88°30'59" NAD27

Land-surface elevation 1,045 feet above NAVD88

Date	? 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	? Water-level approval status
1980-02-28	D	62610		947.89	NGVD29	1	S	A
1980-02-28	D	62611		947.70	NAVD88	1	S	A
1980-02-28	D	72019	97.30			1	S	A
1980-04-22	D	62610		948.52	NGVD29	1	S	A
1980-04-22	D	62611		948.33	NAVD88	1	S	A
1980-04-22	D	72019	96.67			1	S	A
1980-06-05	D	62610		955.79	NGVD29	1	S	A
1980-06-05	D	62611		955.60	NAVD88	1	S	A
1980-06-05	D	72019	89.40			1	S	A
1980-07-09	D	62610		948.61	NGVD29	1	S	A
1980-07-09	D	62611		948.42	NAVD88	1	S	A
1980-07-09	D	72019	96.58			1	S	A
1980-07-31	D	62610		948.52	NGVD29	1	S	A
1980-07-31	D	62611		948.33	NAVD88	1	S	A
1980-07-31	D	72019	96.67			1	S	A
1980-09-05	D	62610		949.25	NGVD29	1	S	A
1980-09-05	D	62611		949.06	NAVD88	1	S	A
1980-09-05	D	72019	95.94			1	S	A
1980-10-02	D	62610		948.97	NGVD29	1	S	A
1980-10-02	D	62611		948.78	NAVD88	1	S	A
1980-10-02	D	72019	96.22			1	S	A
1980-11-01	D	62610		948.51	NGVD29	1	S	A
1980-11-01	D	62611		948.32	NAVD88	1	S	A
1980-11-01	D	72019	96.68			1	S	A
1980-12-04	D	62610		948.50	NGVD29	1	S	A
1980-12-04	D	62611		948.31	NAVD88	1	S	A
1980-12-04	D	72019	96.69			1	S	A

**Explanation**
Section	Code	Description
Water-level date-time accuracy	D	Date is accurate to the Day
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	S	Steel-tape measurement.
Measuring agency		Not determined
Source of measurement		Not determined
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://nwis.waterdata.usgs.gov/nwis/gwlevels?

Page Contact Information: USGS Water Data Support Team
Page Last Modified: 2024-12-26 15:44:08 EST
0.32 0.24 nadww01