Flash Flooding vs. Lake Level Flooding

The two types of flooding that occur in Madison are Flash Flooding and Lake Level Flooding.

Flash Flooding

Flash flooding on a street underwater photo.

Flash flooding can occur anywhere throughout the City when the stormwater infrastructure cannot convey the amount of water that is falling.

Lake Level Flooding

Lake level flooding after the August 2018 flood photo.

Lake level flooding occurs when the entire Yahara chain of lakes system has more water flowing into it than can be moved through it.

Lake levels are defined by DNR and implemented by Dane County.

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