USGS Groundwater for USA: Water Levels -- 1 sites

USGS Home
Contact USGS
Search USGS

USGS Water Resources

Data Category:
Geographic Area:

Warning: Javascript must be enabled to use all the features on this page!

Page Loading - Please Wait...

Click to hideNews Bulletins

Explore the NEW USGS National Water Dashboard interactive map to access real-time water data from over 13,500 stations nationwide.

Groundwater levels for the Nation

Save file of selected sites to local disk for future upload

Johnson County, Iowa

Latitude 41°36'35.0", Longitude 91°48'42.4" NAD83

Land-surface elevation 740 feet above NGVD29

The depth of the well is 177.0 feet below land surface.

This well is completed in the Sand and gravel aquifers (glaciated regions) (N100GLCIAL) national aquifer.

This well is completed in the Holocene Alluvium (111ALVM) local aquifer.

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
2015-07-06	21:00 UTC	m	62610		613.77	NGVD29	1	S	USGS	S	A
2015-07-06	21:00 UTC	m	62611		613.69	NAVD88	1	S	USGS	S	A
2015-07-06	21:00 UTC	m	72019	126.23			1	S	USGS	S	A
2019-09-20	18:10 UTC	m	62610		609.68	NGVD29	1	V	USGS	S	A
2019-09-20	18:10 UTC	m	62611		609.60	NAVD88	1	V	USGS	S	A
2019-09-20	18:10 UTC	m	72019	130.32			1	V	USGS	S	A
2023-07-25	13:26 UTC	m	62610		607.97	NGVD29	1	V	USGS	S	A
2023-07-25	13:26 UTC	m	62611		607.89	NAVD88	1	V	USGS	S	A
2023-07-25	13:26 UTC	m	72019	132.03			1	V	USGS	S	A

**Explanation**
Section	Code	Description
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	S	Steel-tape measurement.
Method of measurement	V	Calibrated electric-tape measurement.
Measuring agency	USGS	U.S. Geological Survey
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://nwis.waterdata.usgs.gov/nwis/gwlevels?

Page Contact Information: USGS Water Data Support Team
Page Last Modified: 2024-11-27 18:46:35 EST
0.32 0.23 nadww01