---
type: lake
name: "Lower (South) Island Lake"
county: "Carlton"
nearest_town: "Cromwell"
lake_type: "lake"
acres: 320
max_depth_ft: 22
latitude: 46.66863
longitude: -92.87786
lake_score: 57
dnr_lake_id: "09006002"
url: https://www.minnelakes.org/lakes/carlton-county/lower-south-island-lake
---

# Lower (South) Island Lake

Lake in Carlton County, Minnesota, near Cromwell

- **Surface Area**: 320 acres
- **Max Depth**: 22 ft
- **Average Depth**: 9 ft
- **Shoreline**: 5.1 miles
- **Water Clarity**: 8.9 ft
- **Lake Type**: lake
- **Public Access**: 1 public boat launch (gravel or earth)
- **Lake Score**: 57/100 (composite of public data, not a visitor rating)

## About

Lower (South) Island Lake is a 320-acre lake near Cromwell in Carlton County, Minnesota. It reaches 22 feet at its deepest point, with an average depth of about 9 feet, and has roughly 5.1 miles of shoreline. DNR surveys put average water clarity at about 8.9 feet.

Minnesota DNR fisheries surveys list 14 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 2024.

There is one public boat launch (gravel or earth surface) managed by the Minnesota DNR. Ice typically goes out around April 17, based on 5 years of DNR ice-out records.

## Access

- **Public access**: 1 public boat launch (gravel or earth)
- **Managed by**: Minnesota DNR
- **Launch fee**: Free at DNR public water accesses

## Fishing

- **Species on DNR survey**: 14
- **Stocked**: Yes
- **Last DNR survey**: 2024
- **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, Bowfin, Brown Bullhead, Hybrid Sunfish, White Sucker, Yellow Bullhead

## Ice-Out

- **Median ice-out**: April 17
- **Years of record**: 5
- **Earliest**: 2015-04-11
- **Latest**: 2022-05-04

## Nearby Lakes

- [Upper (North) Island Lake](https://www.minnelakes.org/lakes/carlton-county/upper-north-island-lake) - 1.2 miles, 114 acres
- [Eagle Lake](https://www.minnelakes.org/lakes/carlton-county/eagle-lake) - 2.5 miles, 389 acres
- [Cross Lake](https://www.minnelakes.org/lakes/carlton-county/cross-lake) - 3.9 miles, 107 acres
- [Tamarack Lake](https://www.minnelakes.org/lakes/carlton-county/tamarack-lake) - 5.4 miles, 235 acres
- [Heikkila Lake](https://www.minnelakes.org/lakes/st-louis-county/heikkila-lake) - 7 miles, 107 acres
- [Cole Lake](https://www.minnelakes.org/lakes/carlton-county/cole-lake) - 7.8 miles, 142 acres

## Links

- [Directions](https://www.google.com/maps/dir/?api=1&destination=46.66863,-92.87786)
- [Minnesota DNR LakeFinder](https://www.dnr.state.mn.us/lakefind/lake.html?id=09006002)
- [All lakes in Carlton County](https://www.minnelakes.org/lakes/carlton-county)

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