This station is operated seasonally (April-November). The elevation of zero gage height has been determined to be 4,926.92 feet above NAVD88. To obtain water‑surface elevation values in NAVD88, add 4,926.92 feet to gage height values.

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Available data

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Continuous data

4 data types available - data from 2025-07-24 to 2026-10-07

Daily data

3 data types available - data from 2025-07-26 to 2026-10-05

Field measurements

2 data types available - data from 1977-07-27 to 2026-08-25

Discrete sample data

0 observed properties (data types) available

Statistical tables for select daily data types

3 data types available - data from 2025-07-26 to 2026-10-05

Important information about this monitoring location

The elevation of zero gage height has been determined to be 4,926.92 feet above NAVD88. To obtain water‑surface elevation values in NAVD88, add 4,926.92 feet to gage height values.

Location details and information

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Operated in cooperation with:

Madison River Foundation

Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	06040050	n/a
Location name	Madison River at Ennis, MT	n/a
Site type	Stream	ST
Decimal latitude (WGS84)	45.347564	n/a
Decimal longitude (WGS84)	-111.722464	n/a
Latitude-longitude method	Interpolated from digital map	N
Latitude-longitude accuracy	Accurate to + or - 1 sec.	S
District	Montana	30
State	Montana	30
County	Madison County	057
Country	United States of America	n/a
Altitude of gage/land surface	4926.92 feet	n/a
Method altitude determined	GNSS3 - Level 3 Quality Survey Grade Global Navigation Satellite System	Y
Altitude accuracy	0.19 feet	n/a
Altitude datum	North American Vertical Datum of 1988	NAVD88
Subbasin hydrologic unit	Madison	10020007
Drainage basin		n/a
Date of first construction	202507	n/a
Drainage area	1722 square miles	n/a
Contributing drainage area		n/a
Time zone abbreviation	MST	n/a
Site honors Daylight Saving Time	Y	n/a
National aquifer		n/a
Local aquifer		n/a
Local aquifer type		n/a
Well depth		n/a
Hole depth		n/a
Source of depth data		n/a

Monitoring location Madison River at Ennis, MT - USGS-06040050