Mimico Creek flows through one of Toronto's most heavily urbanized watersheds, draining approximately 7,700 hectares before emptying into Lake Ontario at Humber Bay. The watershed is bordered by the Etobicoke Creek watershed to the west and the Humber River watershed to the east. As an urban waterway, Mimico Creek reflects the challenges and opportunities of city fishing — while aquatic habitat conditions in the watershed are considered poor due to extensive urbanization and stormwater runoff impacts on water quality, the mouth of the creek and its connection to Humber Bay and Lake Ontario create a surprisingly productive fishery. The creek's lower reaches and the bay at its mouth attract a diverse mix of warmwater species, migratory salmonids, and panfish, making it a genuinely worthwhile destination for urban anglers.