US lakes & pondsUS lakes & pondsSurface area: The USGS National Hydrography Dataset outline (NHD Permanent ID 120019566).
The red circle marks Three Island Lake.
Towns and counties: U.S. Census Bureau boundaries overlaid on the USGS lake outline.
Official Minnesota 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 found in Minnesota DNR lake surveys: Black crappie, Bluegill, Bowfin (dogfish), Brown bullhead, Hybrid sunfish, Largemouth bass, Northern pike, Northern sunfish, Pumpkinseed, Redhorse, Rock bass, Shorthead redhorse, Tullibee (cisco), Walleye, White sucker, Yellow bullhead, Yellow perch.
Average depth not published.
Shallow (littoral) area: 635 of 729 acres
Source: Minnesota Department of Natural Resources LakeFinder record for Three Island Lake (DOW 04013400), with lake survey reports, depth maps and stocking history. 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 120019566), public domain. State outline: U.S. Census Bureau TIGERweb. Points: Minnesota DNR public water access sites (Minnesota Geospatial Commons) and OpenStreetMap boat ramps (ODbL). Dashed trails: © OpenStreetMap contributors (ODbL). Interactive map: Leaflet with © OpenStreetMap contributors. Not for navigation.
OpenStreetMap shows about 0.2 mi of public hiking and walking trail within about 100 m (330 ft) of the Three Island Lake shoreline, mostly along the east shore.
No trailhead is mapped for these trails. The closest public access site is Three Island Lake Public Water Access Site, 0.1 mi from a shoreline trail (Minnesota DNR water 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 7 campgrounds and RV parks within 15 miles of Three Island Lake. Distances are straight-line from the nearest point on the shoreline, so driving distance is longer.
Electric hookups · RVs welcome · Tent sites · Cabins or yurts
RVs welcome
Electric hookups · Showers · Drinking water
Tent sites · Toilets
RVs welcome
RVs welcome · Drinking water
All campgrounds & RV parks in Minnesota
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: Recreation.gov (RIDB) · OpenStreetMap contributors (ODbL). Pulled Oct 12, 2026.
Live from the National Weather Service API for the lake's coordinates (47.6219, -94.7964). The nearest station may be several miles away. NWS forecast for Three Island 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 | Port Hope | — | Boat ramp (OpenStreetMap) · Yes ramp | — | — | Boating | 47.6233, -94.7904 |
| Three Island Lake Public Water Access Site | Turtle Lake | DNR Division of Parks and Trails | Trailer launch · Yes ramp · dock | 3 trailer, 1 car | — | Fishing, Boating | 47.6271, -94.7826 |
Minnesota DNR public water access sites (Minnesota Geospatial Commons) and OpenStreetMap boat ramps (ODbL)
Fees, hours and rules change; confirm with the site owner before you go.
Three Island Lake covers about 733 acres in Turtle Lake and Port Hope, Minnesota (Beltrami County).
The maximum recorded depth is 25 feet, according to the Minnesota DNR LakeFinder.
Minnesota DNR LakeFinder lists Walleye, Northern pike, Largemouth bass, Black crappie, Bluegill, Yellow perch, Tullibee (cisco), Pumpkinseed, Rock bass and Bowfin (dogfish) and 7 more.
Yes. 2 public trailer launches are listed: Three Island Lake Public Water Access Site and Boat ramp. Check posted fees and parking rules.
Yes. We list 7 campgrounds and RV parks within 15 miles.
Three Island Lake touches Turtle Lake and Port Hope in Beltrami County, Minnesota.
Know Three Island 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 Minnesota lakes & ponds · All waters in Turtle Lake