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.
WEST MICHIGAN REGIONAL MAP. Located halfway up the West Michigan coastline, this map encompasses an area from Manistee, 30 miles north of Ludington--to Shelby, 30 miles south of Ludington--along the US-31 highway. Within this region are the villages of Hart, Pentwater, and Silver Lake. Driving on US-10 from the east, you'll go through Baldwin, Custer, and Scottville. Or arrive by water via the S.S. Badger car ferry, which sails May-October across Lake Michigan to Manitowoc, Wisconsin.