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Hennessy Lake is a public lake in Todd County, Minnesota, managed by Minnesota DNR (public waters). The shoreline and water are open to the public. Public access confirmed via MN DNR public water.
A classic Minnesota walleye lake — walleye and northern pike over the primary structure, with perch, crappie and bluegill in the bays and largemouth in the weeds.
Hennessy Lake covers about 52 acres in the Central Lakes region. Anglers here mostly fish for walleye, northern pike, yellow perch, black crappie; bluegill, largemouth bass, white sucker, common carp are also on record. The nearest other mapped waters on PiscaMaps are Fuller Lake and Pixley Lake.
Species from MN DNR LakeFinder and fishery survey data.
Night fishing: No general night-fishing closure in Minnesota. Some designated trout lakes and streams close overnight or have a shortened season, and a few border waters have their own hours — check the current MN DNR regulations for this water.
Boats: Boats and motors are allowed on public waters; some lakes carry no-wake or horsepower limits. AIS law is enforced statewide — drain water, remove plants/mussels, and dry or decontaminate before leaving the access.
Bank & bivvy camping: Camp at state parks, state forest campgrounds, WMAs and DNR rustic campsites; the Boundary Waters needs a BWCA permit. Dispersed shoreline camping outside designated sites is generally not allowed.
Tackle: Statewide bag limits apply (walleye 6, though many marquee and border waters are 4 with a protected slot). Many individual lakes carry special or experimental regulations — check the MN DNR fishing regulations booklet for this water.
Rules verified 2026-09-02 against MN DNR regulations. Always confirm the current rules before you fish.
Anyone 16 or older needs a Minnesota fishing licence. Non-resident annual is about $52; a 72-hour non-resident licence is about $40 and a 24-hour about $14. A trout stamp (about $10) is required to fish trout waters. Buy online at the MN DNR. Every angler 16+ needs a Minnesota fishing licence; a trout stamp is required to fish or possess trout on most trout waters. AIS rules apply — drain, clean and dry before leaving any access.
Every water carries species, bank & boat access, current regulations and live water conditions — and members get Swim Mapper, Catch Logger and Trip Planner. It's the only US map with a dedicated carp-water layer.
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