Postel Slough
Grant County, Wisconsin
About Postel Slough
Postel Slough offers the classic northern Wisconsin combo: northern pike and bass in a Grant County setting that draws anglers and families alike, a intimate 54-acre lake reaching 8 feet at its deepest. Access is limited, which keeps boat traffic low — a plus for solitude seekers. The fishery includes Largemouth Bass, Northern Pike, and Panfish. Note that invasive species (Curly-Leaf Pondweed) have been documented here — clean your boat before leaving.
Bottom composition: 60% sand, 0% gravel, 0% rock, 40% muck
Type: lake · Hydrology: SEEPAGE
Lake Location
43.19810° N, 90.50200° W
WBIC 1214700 · Wisconsin DNRFish Species
Full table →Fishing Tips
- ·Northern pike are ambush predators — target weed edges, fallen timber, and points with large spoons or swimbaits.
- ·Spring pike fishing (ice-out through June) can be outstanding as they move into shallow, warming bays to spawn.
- ·Largemouth bass relate to shallow structure. Work topwater lures at dawn in summer, then switch to soft plastics rigged weedless around lily pads and fallen wood.
- ·Bluegill and crappie stack up in 8–15 ft of water near weedlines. Small jigs tipped with a waxworm are hard to beat.
- ·Panfish are often excellent for kids and beginners — look for them around any dock or submerged brush piles.
Local's Guide
Fishing
Species-specific tips above. Wisconsin fishing license required for ages 16+. See current season regulations below.
View fishing regulations ↓Swimming
Postel Slough has limited visibility and a gravel and sand bottom, making it better suited for boating and fishing than swimming. The 54-acre lake offers a quieter, more intimate swimming experience.
Nearby Dining
Local dining recommendations for Postel Slough are coming soon. Know a great spot near Postel Slough? Share it at staynorthern.com/contact. Looking for restaurants near Grant County lakes? Visit staynorthern.com/eats for our full northwoods dining guide.
Insider Tips
Postel Slough is one of Grant County's lesser-known gems — the kind of place locals return to year after year. Early mornings before 9am offer the calmest water and best fishing before boat traffic picks up. If you're visiting for the first time, check the DNR boat landing locations before you arrive — some are well-marked, others take a local to find. Know something about Postel Slough that visitors should? Share a tip at staynorthern.com/contact — we add the best ones to this page.
Lake Conditions
Water Clarity
—
No data
Trophic Status
—
No data
Invasive Weeds
Present
Curly-Leaf Pondweed
Seasonal Notes
See below
Ice-out dates, peak fishing windows
Ice out arrives in late March to early April on southern Wisconsin lakes. Bass and panfish fishing is excellent from early May onward. Swimming season runs from early June through September. Fall color peaks in mid-October. Ice fishing is possible in most winters but season length varies — check conditions before heading out.
Condition data sourced from Wisconsin DNR surveys. Real-time weed and clarity reports coming soon.
Invasive Species Present
Curly-Leaf Pondweed has been documented in Postel Slough. Clean, drain, and dry all watercraft and equipment before leaving.
Report sightings to the Wisconsin DNR invasive species hotline.Frequently Asked Questions
What fish can you catch in Postel Slough?
Postel Slough is home to Largemouth Bass (Common), Northern Pike (Common), and Panfish (Common). Wisconsin fishing regulations apply — check current seasons and size limits before heading out.
Can you boat on Postel Slough?
Postel Slough does not currently have a public boat landing listed in the Wisconsin DNR database. Shore fishing or kayak/canoe access may still be available — check local access points.
How big is Postel Slough?
Postel Slough has 54 acres in surface area, a maximum depth of 8 feet.
What is the bottom of Postel Slough like?
The lake bottom is composed of 60% sand, 0% gravel, 0% rock, 40% muck. Sandy and gravel bottoms typically support good swimming and healthy fish habitat.
Are there invasive species in Postel Slough?
Yes — Curly-Leaf Pondweed has been documented in Postel Slough. Please clean, drain, and dry your watercraft and all equipment before leaving any Wisconsin water body to prevent the spread of invasive species.
Where is Postel Slough located?
Postel Slough is located in Grant County, Wisconsin. GPS coordinates: 43.1981° N, 90.5020° W.
Are there vacation rentals on Postel Slough?
Stay Northern is building the most complete rental directory for Grant County lakes. Check our Postel Slough vacation rentals listing — if none are available yet, check back soon or browse nearby Grant County lake rentals.
Fishing Regulations
Current season regulations for Postel Slough
Regulation data is not available for this lake. Check with the Wisconsin DNR for current season rules before fishing.
Regulations sourced from Wisconsin DNR fisheries data. Always verify current regulations before fishing.
Lake Details
- WBIC
- 1214700
- County
- Grant County
- Surface Area
- 54 acres
- Max Depth
- 8 ft
- Bottom
- 60% sand, 0% gravel, 0% rock, 40% muck
- Lake Type
- lake
- Coordinates
- 43.1981, -90.5020
Boat Rentals Nearby
Pontoon
Listing soonFishing Boat + Motor
Listing soonKayak / Canoe
Listing soonKnow a local boat rental operator near Postel Slough? Let us know.
Lake data sourced from the Wisconsin DNR. Last updated 4/29/2026.