USGS Groundwater for USA: Water Levels -- 1 sites

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Groundwater levels for the Nation

Lewis And Clark County, Montana

Latitude 46°59'17", Longitude 112°30'39" NAD27

Land-surface elevation 4,814.40 feet above NGVD29

The depth of the well is 200 feet below land surface.

This well is completed in the Quaternary Alluvium (110ALVM) local aquifer.

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	? Measuring agency	? Source of measurement	? Water-level approval status
1970-08-06	D	62610		4795.67	NGVD29	1	S	USGS	S	A
1970-08-06	D	62611		4799.30	NAVD88	1	S	USGS	S	A
1970-08-06	D	72019	18.73			1	S	USGS	S	A
1973-03-29	D	62610		4800.53	NGVD29	1	S	USGS	S	A
1973-03-29	D	62611		4804.16	NAVD88	1	S	USGS	S	A
1973-03-29	D	72019	13.87			1	S	USGS	S	A
1973-04-11	D	62610		4802.16	NGVD29	1	S	USGS	S	A
1973-04-11	D	62611		4805.79	NAVD88	1	S	USGS	S	A
1973-04-11	D	72019	12.24			1	S	USGS	S	A
1973-11-02	D	62610		4794.92	NGVD29	1	S	USGS	S	A
1973-11-02	D	62611		4798.55	NAVD88	1	S	USGS	S	A
1973-11-02	D	72019	19.48			1	S	USGS	S	A
1974-07-18	D	62610		4802.47	NGVD29	1	S	USGS	S	A
1974-07-18	D	62611		4806.10	NAVD88	1	S	USGS	S	A
1974-07-18	D	72019	11.93			1	S	USGS	S	A
1974-12-03	D	62610		4791.48	NGVD29	1	S	USGS	S	A
1974-12-03	D	62611		4795.11	NAVD88	1	S	USGS	S	A
1974-12-03	D	72019	22.92			1	S	USGS	S	A
1975-05-15	D	62610		4805.24	NGVD29	1	S	USGS	S	A
1975-05-15	D	62611		4808.87	NAVD88	1	S	USGS	S	A
1975-05-15	D	72019	9.16			1	S	USGS	S	A
1975-09-29	D	62610		4802.44	NGVD29	1	S	USGS	S	A
1975-09-29	D	62611		4806.07	NAVD88	1	S	USGS	S	A
1975-09-29	D	72019	11.96			1	S	USGS	S	A
1991-09-05	D	62610		4798.66	NGVD29	1	S	USGS	S	A
1991-09-05	D	62611		4802.29	NAVD88	1	S	USGS	S	A
1991-09-05	D	72019	15.74			1	S	USGS	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	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: 2025-01-10 13:57:36 EST
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