Heavy rain drenched portions of the Southwest, putting nearly a third of the country at risk of flash floods in the hours ahead. New Mexico has seen the worst of it so far, where water spilled over a 20-foot dam, prompting emergency crews to urge evacuations. Rob Marciano has more.

Source: [CBS News](https://www.cbsnews.com/video/flash-flooding-southwest-overwhelming-new-mexico-dam-brink-failing/)

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