Flood in Gallatin County, Montana

Flood April 10, 2023 – April 13, 2023 · Gallatin County, Montana

$1.0M

Damage as recorded

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

Churchill area saw pretty good runoff occur. Several locations around Amsterdam (Camp and Godfrey Creeks) had water up against houses. The Highline Canal near Gallatin Gateway overtopped in several locations due to runoff. One house and Axtell Anceny Road were affected. Residents on Dry Creek Road and Swamp Creek Road had flood water around houses. This caused the evacuation of the Bootstrap Ranch. County Roads had several roads closed with water on them.

The wider storm

Unseasonably warm temperatures occurred in the first two weeks of April, with highs near 80 degrees occurring at times. These warm temps, along with occasional rain, resulted in melting of a deep snowpack on top of frozen ground which led to significant runoff into area waterways. Moderate to major flooding occurred along portions of the Milk River and its tributaries. Impactful snowmelt flooding also occurred across Southcentral Montana, in particular across the Gallatin Valley.

Began near Chestnut (45.5999, -110.9622).

Source: NOAA Storm Events Database, event 1096960. Narratives are written by the National Weather Service forecast office that issued the report.

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