In the early 1700s flooding and waterborne disease was a big problem that slowed the growth of Baltimore city. To solve the problem engineers came up with a plan that would bury the area streams and rivers in underground storm drain systems. The Jones Falls Conduit is one of those systems. The Jones Falls watershed encompasses about 58 square miles of Baltimore County which drains to a stream that runs alongside the Jones Falls Expressway (I-83) until it goes underground near North Howard Street. Once underground the stream passes thru a massive concrete/brick conduit running in total darkness for about 1.7 miles before it outfalls into the Inner Harbor.