Upper Oconomowoc Lake

Reservoir in Wisconsin · 35 acres · near Oconomowoc Lake

Upper Oconomowoc Lake has 1 boat ramp listed as public.

Zebra mussels

Zebra mussels (latest report 1999) reported in this water (USGS Nonindigenous Aquatic Species database). Clean, drain and dry your boat, trailer and gear before you leave, and do not move water, plants or live bait to another water.

USGS Nonindigenous Aquatic Species database · checked October 18, 2026

Launches

Upper Oconomowoc Lake Access · Boat ramp · near Oconomowoc Lake