---
type: lake
name: "Island Lake"
county: "Mahnomen"
nearest_town: "Lengby"
lake_type: "lake"
acres: 616
max_depth_ft: 43
latitude: 47.4501
longitude: -95.65245
lake_score: 58
dnr_lake_id: "44003800"
url: https://www.minnelakes.org/lakes/mahnomen-county/island-lake
---

# Island Lake

Lake in Mahnomen County, Minnesota, near Lengby

- **Surface Area**: 616 acres
- **Max Depth**: 43 ft
- **Shoreline**: 9.4 miles
- **Water Clarity**: 6.7 ft
- **Lake Type**: lake
- **Public Access**: 1 public boat launch (concrete)
- **Lake Score**: 58/100 (composite of public data, not a visitor rating)

## About

Island Lake is a 616-acre lake near Lengby in Mahnomen County, Minnesota. It reaches 43 feet at its deepest point, and has roughly 9.4 miles of shoreline. DNR surveys put average water clarity at about 6.7 feet.

Minnesota DNR fisheries surveys list 11 fish species here, including walleye, northern pike, largemouth bass, black crappie, bluegill, and pumpkinseed. The DNR has stocking records for the lake, so check the stocking report for the most recent species and year classes. The most recent fisheries survey on file dates to 2025.

There is one public boat launch (concrete surface).

## Access

- **Public access**: 1 public boat launch (concrete)
- **Managed by**: Not recorded
- **Launch fee**: Free at DNR public water accesses

## Fishing

- **Species on DNR survey**: 11
- **Stocked**: Yes
- **Last DNR survey**: 2025
- **Special regulations**: No
- **Ice fishing**: Yes

## Activities

Fishing, Ice Fishing, Boating, Paddling

## Amenities

Boat Ramp

## Fish Species

Walleye, Northern Pike, Largemouth Bass, Black Crappie, Bluegill, Pumpkinseed, Yellow Perch, Rock Bass, Black Bullhead, Brown Bullhead, Hybrid Sunfish

## Nearby Lakes

- [Spring Lake](https://www.minnelakes.org/lakes/polk-county/spring-lake) - 4.1 miles, 134 acres
- [Sand Hill Lake](https://www.minnelakes.org/lakes/polk-county/sand-hill-lake) - 5.8 miles, 479 acres
- [Little Vanose Lake](https://www.minnelakes.org/lakes/mahnomen-county/little-vanose-lake) - 7 miles, 143 acres
- [Lone Lake](https://www.minnelakes.org/lakes/mahnomen-county/lone-lake) - 7.8 miles, 112 acres
- [Whitefish Lake](https://www.minnelakes.org/lakes/polk-county/whitefish-lake) - 9.4 miles, 243 acres
- [Minnow Lake](https://www.minnelakes.org/lakes/clearwater-county/minnow-lake) - 10.1 miles, 110 acres

## Links

- [Directions](https://www.google.com/maps/dir/?api=1&destination=47.4501,-95.65245)
- [Minnesota DNR LakeFinder](https://www.dnr.state.mn.us/lakefind/lake.html?id=44003800)
- [All lakes in Mahnomen County](https://www.minnelakes.org/lakes/mahnomen-county)

---
*Source: [MinneLakes.org](https://www.minnelakes.org/lakes/mahnomen-county/island-lake)*