Blockhouse Lake

Aerial view of Blockhouse Lake, a 241 acre lake in Mercer, Wisconsin

Blockhouse Lake is a Mercer-area lake tucked into the woods west of town, offering a compact basin and a secluded feel. Its mostly undeveloped shoreline reinforces a calm, cabin-in-the-woods atmosphere that contrasts with the area’s larger, busier lakes.

The lake is well suited to small boats, pontoons, and paddling craft, favoring sheltered cruising and relaxed shoreline exploration over big-water runs.

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Blockhouse Lake Specs:

Avg. Depth: 5 Feet
Size: 241 Acres
Max Depth: 8 Feet
Water Source:
Lake Access: Public
Town:Mercer
Time to Town: 20 Minutes

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Blockhouse Lake contour map

This is a summary based on available information.

Blockhouse Lake likely supports the typical Mercer mix of panfish, bass, and pike, with fish holding around weedlines and modest structure. Anglers can usually cover much of the lake in a short outing, pitching jigs, small crankbaits, and live bait rigs along edges. The quiet setting and light pressure help keep fish less conditioned than on marquee musky waters nearby. It’s a comfortable lake for families and new anglers who want straightforward, close‑to‑shore fishing.

How big is Blockhouse Lake?

Blockhouse Lake is 241 acres.

How deep is Blockhouse Lake?

Blockhouse Lake has an average depth of 5 feet and a maximum depth of 8 feet.

How far is Blockhouse Lake from Mercer?

Blockhouse Lake is 20 minutes from Mercer, Wisconsin.

What type of lake is Blockhouse Lake?

Blockhouse Lake is a Drainage lake.

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