Farm Island Lake
Aitkin County, Minnesota, near Bennettville. DNR lake ID 01015900.
Farm Island Lake is a 2,005-acre lake in Aitkin County, Minnesota, near Bennettville. Its deepest point reaches 56 ft, and about 44% of the lake is shallower than 15 feet. Summer water clarity averages 10.1 feet in Minnesota Pollution Control Agency monitoring, which places it in the eutrophic nutrient class. The DNR lists it for zebra mussel. DNR surveys document walleye, northern pike, largemouth bass, smallmouth bass, black crappie, bluegill.
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Quick facts
| DNR lake ID | 01015900 |
|---|---|
| County | Aitkin County, near Bennettville |
| Surface area | 2,005 acres |
| Maximum depth | 56 ft |
| Share under 15 ft | 44% |
| Water clarity (summer) | 10.1 ft through 2025 |
| Phosphorus (summer) | 54.4 µg/L |
| Algae, chlorophyll-a (summer) | 8.5 µg/L |
| Nutrient class | Eutrophic |
| Clarity trend | Clearer (2016 to 2025) |
| Invasive species | zebra mussel |
| Public water accesses | 2 |
Water quality
Summer averages from Minnesota Pollution Control Agency monitoring through 2025: clarity 10.1 ft, phosphorus 54.4 µg/L, algae (chlorophyll-a) 8.5 µg/L. Using the Carlson trophic state index, Farm Island Lake rates as eutrophic. Summer clarity trend 2016 to 2025: clearer.
Fishing on Farm Island Lake
The most recent DNR standard fish survey was in 2020 (6 years ago). Catch per net is compared with the DNR’s typical range for lakes of the same type.
| Species | Net | Catch per net | Typical range |
|---|---|---|---|
| Walleye | gill | 6.6 | 4.0 to 9.6 |
| Northern pike | gill | 9.87 | 3.0 to 7.9 |
| Yellow perch | gill | 1.67 | 7.1 to 33.9 |
| Black crappie | gill | 0.4 | 0.2 to 1.1 |
| Bluegill | gill | 4.07 | n/a |
| Largemouth bass | gill | 0.4 | 0.3 to 1.2 |
| Smallmouth bass | gill | 0.87 | 0.2 to 0.9 |
| Tullibee (cisco) | gill | 0.27 | 0.5 to 5.2 |
| Pumpkinseed | gill | 1.47 | n/a |
| Rock bass | gill | 6.93 | 1.0 to 6.6 |
| Hybrid sunfish | gill | 0.13 | n/a |
Walleye catch was within the typical range for similar lakes in that survey.
Largest fish measured in recent DNR samples: Largemouth bass 15.0 in (2020), Walleye 21.0 in (2022), Northern pike 32.0 in (2020), Smallmouth bass 17.0 in (2020).
Game and panfish documented since 2005: Walleye, Northern pike, Largemouth bass, Smallmouth bass, Black crappie, Bluegill, Yellow perch, Pumpkinseed, Hybrid sunfish, Rock bass, Tullibee (cisco), Bowfin, White sucker, Yellow bullhead, Brown bullhead, Black bullhead.
Fishing regulations
- Walleye 16 to 19 in must be released. (Minnesota Rules 6264.0400, April 2026)
Regulations change. Confirm with the DNR before fishing.
Invasive species
On the Minnesota DNR infested waters list for: zebra mussel (listed 2020).
Public boat access
- Farm Island North: 1 concrete slab launch ramp, 1 dock, 9 trailer spaces. Hwy 169 to Pioneer Road Directions
- Farm Island Lake: 1 concrete slab launch ramp, 1 dock, 6 trailer spaces. 8 miles Northeast of Garrison on US Hwy. 169, then 1.5 miles West on Aitkin Co. Rd. #11. Directions
DNR water access records (2023). Confirm current conditions with the DNR.
Nearby lakes
- Horseshoe Lake 1.7 mi, Aitkin County
- Dummer Lake 1.8 mi, Aitkin County
- Little Pine Lake 1.9 mi, Aitkin County
- Sunset Lake 2.0 mi, Aitkin County
- Hickory Lake 2.3 mi, Aitkin County
- Thornton Lake 2.4 mi, Aitkin County
- Long / Tame Fish Lake 2.5 mi, Crow Wing County
- Mallard Lake 2.7 mi, Aitkin County
Questions about Farm Island Lake
How deep is Farm Island Lake?
Farm Island Lake reaches a maximum depth of 56 ft according to Minnesota DNR records. About 44% of the lake is shallower than 15 feet.
How big is Farm Island Lake?
Farm Island Lake covers about 2,005 acres in Aitkin County, Minnesota.
How clear is Farm Island Lake?
Summer water clarity on Farm Island Lake averages 10.1 feet (Secchi depth) in MPCA monitoring through 2025. Its trophic state is eutrophic.
Does Farm Island Lake have zebra mussels or other invasive species?
The Minnesota DNR infested waters list includes Farm Island Lake for zebra mussel.
What fish are in Farm Island Lake?
Minnesota DNR surveys document walleye, northern pike, largemouth bass, smallmouth bass, black crappie, bluegill, yellow perch, pumpkinseed, hybrid sunfish, rock bass in Farm Island Lake. The most recent standard survey was in 2020.
Where is the public boat access on Farm Island Lake?
Farm Island Lake has 2 public water access sites on DNR record: Farm Island North; Farm Island Lake.
How is the walleye population on Farm Island Lake?
In Minnesota DNR net surveys from 1991 to 2020, walleye numbers on Farm Island Lake ran mostly within the typical range for similar lakes. Nets measure how many fish a lake holds, not where they’re biting, so local guides are the best source for current fishing.
Are there lake homes for sale on Farm Island Lake?
Homes on Farm Island Lake come up for sale throughout the year, and some sell before they’re ever publicly advertised. Tell us what you’re looking for and our agents will run a custom search and send you matching homes on Farm Island Lake and nearby lakes, including off-market opportunities when available.
What is it like to live on Farm Island Lake?
A mid-size lake with room for boating and fishing, about 44% shallow shoreline under 15 feet, and summer clarity around 10.1 feet. Conditions vary by property, so walk the frontage and ask us what similar homes have sold for.
Are there special fishing regulations on Farm Island Lake?
Yes. Walleye 16 to 19 in must be released.
Ask us about Farm Island Lake
Whether you’re buying, selling, or just curious, our team works Aitkin County lakes every day. Send us a note or call (218) 656-6469.
Sources: Minnesota DNR LakeFinder records, DNR fish surveys (latest 2020), DNR infested waters list (Sept 2026), Minnesota Rules 6264.0400 (April 2026), MPCA monitoring via the Water Quality Portal, DNR water access records (2023), LAGOS-US. Lakewide information from public data; it does not describe any specific property. Verify shoreline, bottom type, and depth at any frontage.