Flash Flood at Thompson Canyon, Utah

We could see clouds and lightening farther up the canyon, but it was sunny and clear near the canyon mouth.

Shown in real time.

We got out of Dodge before it ended (or grew), so we don’t know how long it lasted.

Levee built of woody debris as flood first passes by (best seen c. 19 sec).

After a short bit at least cobble sized rocks were being carried by the flow.

At 34 seconds, you see standing waves formed in the flow.

Note hydraulic jumps seen at 40 sec and 42 seconds as flow cuts across road way.

As flood subsided, we could see deposition of imbricated clasts (photo below).

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