Ambridge flooding

(Credit: Jason Thomas)

Corner of 8th Street and Route 65, Ambridge

Ambridge flooding

(Credit: Jason Thomas)

Park Road, Ambridge

Ambridge flooding

(Credit: Jason Thomas)

Route 65 at 4th Street, Ambridge

Gibsonia Flash Flood

(Credit: Eric Kraus)

North Pioneer Road, Gibsonia

Gibsonia Flash Flood

(Credit: Eric Kraus)

North Pioneer Road, Gibsonia

Gibsonia Flash Flood

(Credit: Eric Kraus)

North Pioneer Road, Gibsonia

Gibsonia Flash Flood

(Credit: Eric Kraus)

North Pioneer Road, Gibsonia

Kennywood flash flood

(Credit: Kristan)

squirrelhill

(Credit: Ben Burk)

Murray ave and Darlington, Squirrel Hill

WashingtonBLVD

Flash flood waters rose quickly on Washington Boulevard on July 18, 2011. (Credit: Matthew Godfrey)

Washington Boulevard, Pittsburgh

Route 65 in Ambridge

(Credit: Erik Schmetzer)

Route 65 in Ambridge

(Credit: Erik Schmetzer)

Leetsdale Park

(Credit: Erik Schmetzer)