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Black Oak Lake

By Land O' Lakes. 564 acres, 85 feet at the deepest.

564acres
85 ftdeepest
34 ftaverage depth
1public boat landing

Ice on Black Oak Lake

No ice reports from Black Oak Lake in the last two weeks.

What folks saw out there, not the DNR. No ice is safe ice; check it yourself.

Send a report All ice reports

Fish

  • Plenty of: panfish
  • Common: largemouth bass, smallmouth bass and northern pike
  • Also there: trout and walleye

How the DNR lists them. It doesn't say how the fishing is.

Boat landings

Water and bottom

  • Water: very clear
  • Bottom: 50% sand, 30% gravel, 15% rock, 5% muck
  • Kind of lake: a seepage lake: no stream in or out, it's fed by rain and groundwater

Invasive species

The DNR has found Chinese mystery snail and rusty crayfish here.

State law: before you leave the landing, pull off any plants and critters, drain all the water out of your boat, motor, livewell and buckets, and never move live fish away from the lake.

The DNR's boat and bait rules

Depth map

Wisconsin DNR lake survey map of Black Oak Lake, with depth lines in feet

Wisconsin DNR lake survey map, mapped August 1969. Mind the north arrow; some of these old maps are turned sideways. It's old and not for navigation; shorelines and depths change. The DNR lists the lake at 564 acres today. The DNR's original (PDF)

Lake facts from the Wisconsin DNR's page for Black Oak Lake, checked October 24, 2026.