deleterious. adjective (Formal) harmful, bad, damaging, destructive, detrimental, hurtful, pernicious, ruinous, prejudicial, injurious Fear of crime is having a deleterious effect on society. adjective.
In 1987, the south bank of the canal became part of the National Ice Age Trail. Maps and more information are available at the Portage Area Chamber of Commerce, Located at the corner of Wisconsin and Cook Streets, Downtown Portage.
Portage Lake is in western Manistee County, in the northwestern Lower Peninsula of Michigan. The Village of Onekama is on the northeast shore of Portage Lake. Portage Lake is a natural lake, having been formed during the Wisconsinan glacial stage (10,000 to 75,000 years ago).he water was colorless and moderately clear, with a Secchi disk visible to a depth of 12 feet. Within the water column, alkalinity was from 132 to 135, and pH ranged from 8.9 at the surface, to 8.5 at 25 feet, to 7.7 at the bottom in 50 feet of water.