delÂ·eÂ·teÂ·riÂ·ous. adj. Having a harmful effect; injurious: the deleterious effects of smoking.
Portage is a city in Kalamazoo County in the U.S. state of Michigan. The population was 46,292 in the 2010 census. It is the smaller of the two main cities included in the Kalamazoo-Portage Metropolitan Statistical Area, which has a population of 326,589 as of 2010. Portage is adjacent to the southern boundary of the City of Kalamazoo.
The Keweenaw Waterway is a partly natural, partly manmade waterway which cuts across the Keweenaw Peninsula of Michigan. Parts of the waterway are variously known as the Keweenaw Waterway, Portage Canal, Portage Lake Canal, Portage River, Lily Pond, and Portage Lake. The waterway connects to Lake Superior at its north and south entries, with sections known as Portage Lake and Torch Lake in between. The primary tributary to Portage Lake is the Sturgeon River.