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Important for you to know:

  • New to WDFN: see current water conditions throughout the state using the new State Pages. Visit the Louisiana page for an example. Filter by continuous data type and age of data, view latest values, and link to graphing options to explore the data further. You can update the state name in the URL to visit your State Page or read our announcement on the Water Data for the Nation blog to find links to all the state and territory pages.
Important Inventory Page

USGS Parameter Group Data Types Start Date End Date
Information Water-quality 1999-08-09 2021-05-10
Physical Groundwater Levels, Water-quality 1999-08-09 2024-06-17
n/a USGS Active Groundwater Level Network Site 2000-01-01 2021-01-01
Water Data for the Nation inventory

Monitoring location 421527088193401 is associated with a Well in McHenry County, Illinois. Water data back to 1999 are available online.

Metadata Element Location Metadata Metadata Code
Agency
U.S. Geological Survey USGS
Site identification number
421527088193401 n/a
Site name
44N8E-29.5b n/a
Site type
Well
GW
DMS latitude 421527.9 n/a
DMS longitude 0881934.5 n/a
Decimal latitude 42.25775 n/a
Decimal longitude -88.32625 n/a
Latitude-longitude method
Mapping grade GPS unit (handheld accuracy range 12 to 40 ft) G
Latitude-longitude accuracy
Accurate to + or - .1 sec (Differentially-Corrected GPS). 1
Latitude-longitude datum
North American Datum of 1983 NAD83
Decimal Latitude-longitude datum North American Datum of 1983 NAD83
District
Illinois 17
State
Illinois 17
County
McHenry County 111
Country US n/a
Land net location description SENESWS29 T44N R8E n/a
Name of location map MCHENRY, IL n/a
Scale of location map 24000 n/a
Altitude of Gage/land surface 930 feet n/a
Method altitude determined Interpolated from topographic map. M
Altitude accuracy 1 feet n/a
Altitude datum
National Geodetic Vertical Datum of 1929 NGVD29
Subbasin hydrologic unit
07120006
Drainage basin
n/a
Topographic setting
Undulating
U
Flags for instruments at site NNNNNNNNNNNNNNNNNNNNNNNNNNNNNN n/a
Date of first construction
19990809 n/a
Date site established or inventoried n/a
Drainage area
n/a
Contributing drainage area n/a
Time Zone abbreviation CST n/a
Site honors Daylight Saving Time
N n/a
Data reliability
Data have been checked by the reporting agency. C
Data-other GW files YYNYNYNN n/a
National aquifer Sand and gravel aquifers (glaciated regions) N100GLCIAL
Local aquifer Quaternary System 110QRNR
Local aquifer type
Unconfined single aquifer U
Well depth 42.5 feet n/a
Hole depth
43 feet n/a
Source of depth data S n/a
Project number 441711200 n/a