US lakes & pondsUS lakes & pondsSurface area: The USGS National Hydrography Dataset outline (NHD Permanent ID 139268510).
The red circle marks Long Lake.
Towns and counties: U.S. Census Bureau boundaries overlaid on the USGS lake outline.
Official Wisconsin DNR pages. Rules and fees change; check before you go.
Built only from the data on this page: official access lists, OpenStreetMap beaches and trails, campground listings, state and USGS invasive-species records. We don't rate crowds or water quality.
Fish species listed by the Wisconsin DNR (with DNR abundance rating): Panfish (abundant), Largemouth Bass (common), Northern Pike (common), Walleye (common).
Average depth not published.
DNR lake class: Complex - Warm - Clear
Source: Wisconsin Department of Natural Resources Lake Page for Long Lake (WBIC 38700); maximum depth and acreage from the DNR lake classification data. Acreage here can differ slightly from our mapped outline.
Numbers on the map match the list at rightbelow.
Shoreline: USGS National Hydrography Dataset (NHD Waterbody, Permanent ID 139268510), public domain. State outline: U.S. Census Bureau TIGERweb. Points: Wisconsin DNR boat access sites and OpenStreetMap boat ramps (ODbL). Dashed trails: © OpenStreetMap contributors (ODbL). Interactive map: Leaflet with © OpenStreetMap contributors. Not for navigation.
OpenStreetMap shows about 1.2 mi of public hiking and walking trail within about 100 m (330 ft) of the Long Lake shoreline, mostly along the south shore.
No trailhead is mapped for these trails. The closest public access site is Long Lake Boat Ramp, 200 ft from a shoreline trail (Wisconsin DNR boat access data).
The dashed brown line on the lake map shows these trails. We include paths, footways and marked trails that OpenStreetMap doesn't mark as private, and leave out roads, sidewalks and snowmobile corridors. Mapped trails can still cross private land or close for the season, and not every trail is mapped, so follow posted signs.
Trails: © OpenStreetMap contributors, available under the Open Database License (ODbL). Map data as of Oct 9, 2026. Trail lengths count only the parts within about 100 m of the USGS NHD lake outline.
We found 19 campgrounds and RV parks within 15 miles of Long Lake, 8 of them within 5 miles. 2 are right on the shore. Distances are straight-line from the nearest point on the shoreline, so driving distance is longer.
RVs welcome
RVs welcome
All campgrounds & RV parks in Wisconsin
Green tent icons on the lake map mark campgrounds near the shore, and the interactive map shows the closest 12. Amenities are listed only where a source records them; call or check the campground's website before you go, since seasons and rates change every year.
Campground data: OpenStreetMap contributors (ODbL). Pulled Oct 12, 2026.
Live from the National Weather Service API for the lake's coordinates (43.6737, -88.1709). The nearest station may be several miles away. NWS forecast for Long Lake. No live water-temperature sensor is shown because we haven't found a public one for this lake.
Based on solunar theory, an estimate. Major periods (about 2 hours) center on when the moon is directly overhead or underfoot; minor periods (about 1 hour) center on moonrise and moonset. The 0–100 activity score rises during those periods and gets a boost near sunrise and sunset and around the new and full moon. Weather, water temperature and pressure often matter more. Sun and moon times are calculated in your browser from the lake's coordinates with standard astronomy formulas, shown in CT (America/Chicago), and accurate to within a few minutes.
2 public access sites listed, 2 with a boat ramp or trailer launch.
| Site | Town | Owner | Type | Parking | Fee | Uses | Map |
|---|---|---|---|---|---|---|---|
| Boat ramp | Osceola | — | Boat ramp (OpenStreetMap) · Yes ramp | — | — | Boating | 43.6678, -88.1762 |
| Long Lake Boat Ramp | Osceola | Kettle Moraine State Forest - North. Unit | Boat ramp · Concrete ramp | — | — | Boating | 43.6632, -88.1699 |
Wisconsin DNR boat access sites and OpenStreetMap boat ramps (ODbL)
Fees, hours and rules change; confirm with the site owner before you go.
Reported on or near Long Lake
USGS Nonindigenous Aquatic Species database
USGS records matched to this water by location (within about 150 m of the outline) or by the place name in the record. A record shows a sighting was reported; it doesn't prove the species is still there. As of Oct 10, 2026.
Long Lake covers about 453 acres in Osceola, Wisconsin (Fond du Lac County).
The maximum recorded depth is 47 feet, according to the Wisconsin DNR Lake Pages.
Wisconsin DNR Lake Pages lists Walleye, Northern Pike, Largemouth Bass and Panfish.
Yes. 2 public trailer launches are listed: Long Lake Boat Ramp and Boat ramp. Check posted fees and parking rules.
Yes. We list 19 campgrounds and RV parks within 15 miles, 8 of them within 5 miles.
Long Lake touches Osceola in Fond du Lac County, Wisconsin.
Know Long Lake? Tell us about the launch, parking, where they're biting or anything a first-time visitor should know. Tips go privately to the LakeRipple editor; nothing is posted automatically. Helpful tips may be featured on this page (we'll use your first name only if you give one).
Straight-line distance between lake centers. All Wisconsin lakes & ponds · All waters in Osceola