Onekama Township Portage Lake Management

Since 2009, Onekama Township has had annual lake management plans to improve the quality of the water and protect Portage Lake into the future.  Each annual plan includes water quality monitoring, surveys of aquatic vegetation, and exotic weed control.  These lake improvement activities are funded by assessments on property owners within a special assessment district established under Public Improvements Act 188 of 1954.  The PLWF Water Quality and Environmental Monitoring Committee provides technical advice to the township with regard to lake management.

Read the 2021 Portage Lake Management Plan 

DNR Status of the Fishery Surveys

Since 1991, the Michigan Department of Natural Resources has issued Status of the Fishery survey reports for selected Michigan lakes and rivers.  The DNR has surveyed the Portage Lake fishery twice: first in June 1999 and again in May 2009.

Read the 2009 report

Read the 1999 report