At Low tide during 1998, metal garbage is uncovered by the Carroll Street Bridge of the Gowanus Canal in Brooklyn, NY. The aea was cleaned out during the during the city-led 1999 cleanup effort that involved repairs to the flushing tunnel and a partial dredging at the head of the waterway. The results were immediate with an increase in fish and wildlife. The divers had challenging conditions, coming out covered in oil and tar and working conditions with no visibility underwater.