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Eau Clair

Ghost town · Madison County, Montana

Jefferson Island quadrangle, USGS topographic map (1950, 1:62,500)
Jefferson Island quadrangle, USGS topographic map (1950, 1:62,500) · U.S. Geological Survey, Historical Topographic Map Collection · Public domain

Eau Clair is a ghost town in Madison County, Montana. It is one of 12 former communities in Madison County on the federal names register. That ranks the county 13th among the 55 Montana counties with a vanished settlement on record.

The U.S. Geological Survey lists Eau Clair as a historical populated place on the Jefferson Island topographic quadrangle: the name is no longer in official use for a community, whether the settlement was abandoned, absorbed into a neighbouring town or renamed. The recorded location is 45.8430° N, 111.9197° W.

Key facts

USGS quadrangleJefferson Island
Elevation4,262 ft
Nearest living townCardwell, MT
Distance to it2.6 miles
GNIS feature ID1797528
Coordinates45.84298, -111.91971

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What's there now

Eau Clair is no longer a community in its own right. The nearest living town is Cardwell, MT (population 43), about 2.6 miles away in a straight line, and the site sits at roughly 4,262 feet above sea level. Much of the land around former townsites is private; check access before you visit.

Nearby places

Questions

Where is Eau Clair?

Eau Clair is in Madison County, Montana, at 45.8430, -111.9197.

How many ghost towns are in Madison County?

Madison County, Montana has 12 ghost towns on record at Wayfarrow.

Sources and licences

Facts marked "approximately" carry an uncertain date in the source. Text on this page is generated from the sources above; no encyclopedia prose is copied. Last updated 2026-11-05.