Barnum Lake
Cass County, Minnesota, near Hackensack. DNR lake ID 11028100.
Barnum Lake is a 151.3-acre lake in Cass County, Minnesota, near Hackensack. Its deepest point reaches 30 ft, and about 56% of the lake is shallower than 15 feet. Summer water clarity averages 16.5 feet in Minnesota Pollution Control Agency monitoring, which places it in the oligotrophic nutrient class. It is not on the DNR infested waters list as of September 2026.
Buying or selling on Barnum Lake? Ask us what lakeshore here actually sells for, which stretches of shoreline buyers compete for, and what’s coming up before it’s listed.
Tell us about your dream home on Barnum LakeWhat’s my Barnum Lake property worth?Call (218) 656-6469
Quick facts
| DNR lake ID | 11028100 |
|---|---|
| County | Cass County, near Hackensack |
| Surface area | 151.3 acres |
| Maximum depth | 30 ft |
| Share under 15 ft | 56% |
| Water clarity (summer) | 16.5 ft through 2025 |
| Phosphorus (summer) | 9.4 µg/L |
| Algae, chlorophyll-a (summer) | 3.1 µg/L |
| Nutrient class | Oligotrophic |
| Clarity trend | Steady (2016 to 2025) |
| Invasive species | Not on DNR infested waters list (Sept 2026) |
| Public water accesses | 0 |
Water quality
Summer averages from Minnesota Pollution Control Agency monitoring through 2025: clarity 16.5 ft, phosphorus 9.4 µg/L, algae (chlorophyll-a) 3.1 µg/L. Using the Carlson trophic state index, Barnum Lake rates as oligotrophic. Summer clarity trend 2016 to 2025: steady.
Fishing on Barnum Lake
The most recent DNR standard fish survey was in 2001 (25 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 |
|---|---|---|---|
| Northern pike | gill | 10.17 | 3.5 to 8.9 |
| Northern pike | trap | 0.56 | n/a |
| Yellow perch | gill | 9.67 | 1.0 to 10.3 |
| Yellow perch | trap | 0.78 | 0.3 to 1.2 |
| Black crappie | gill | 0.67 | 1.0 to 3.9 |
| Black crappie | trap | 4.22 | 0.8 to 4.0 |
| Bluegill | gill | 1.67 | n/a |
| Bluegill | trap | 47.22 | 9.5 to 57.3 |
| Largemouth bass | gill | 0.17 | 0.4 to 1.6 |
| Largemouth bass | trap | 1.11 | 0.3 to 1.4 |
| Smallmouth bass | gill | 0.17 | 0.5 to 3.1 |
| Pumpkinseed | gill | 1.0 | n/a |
| Pumpkinseed | trap | 1.44 | 1.5 to 6.8 |
| Rock bass | trap | 0.22 | 0.4 to 1.7 |
Largest fish measured in recent DNR samples: Northern pike 37.0 in (2001), Largemouth bass 21.0 in (2001), Smallmouth bass 17.0 in (2001).
Fishing regulations
No lake-specific regulation found in Minnesota Rules or the DNR sunfish list. Statewide and zone regulations apply.
Regulations change. Confirm with the DNR before fishing.
Invasive species
Not on the Minnesota DNR infested waters list as of September 2026. That means no confirmed listing, not a guarantee the lake is free of invasive species.
Public boat access
No public water access on DNR record.
Nearby lakes
- Man Lake 0.9 mi, Cass County
- Primer Lake 1.1 mi, Cass County
- McKeown Lake 1.3 mi, Cass County
- Moccasin Lake 2.0 mi, Cass County
- Baby Lake 2.1 mi, Cass County
- Hazel Lake 2.3 mi, Cass County
- Woman Lake 2.3 mi, Cass County
- Child Lake 2.4 mi, Cass County
Questions about Barnum Lake
How deep is Barnum Lake?
Barnum Lake reaches a maximum depth of 30 ft according to Minnesota DNR records. About 56% of the lake is shallower than 15 feet.
How big is Barnum Lake?
Barnum Lake covers about 151.3 acres in Cass County, Minnesota.
How clear is Barnum Lake?
Summer water clarity on Barnum Lake averages 16.5 feet (Secchi depth) in MPCA monitoring through 2025. Its trophic state is oligotrophic.
Does Barnum Lake have zebra mussels or other invasive species?
Barnum Lake is not on the Minnesota DNR infested waters list as of September 2026. That means there is no confirmed listing; it is not a guarantee the lake is free of invasive species.
Are there lake homes for sale on Barnum Lake?
Homes on Barnum 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 Barnum Lake and nearby lakes, including off-market opportunities when available.
What is it like to live on Barnum Lake?
Small, quiet water suited to paddling and fishing, about 56% shallow shoreline under 15 feet, and summer clarity around 16.5 feet. Conditions vary by property, so walk the frontage and ask us what similar homes have sold for.
Are there special fishing regulations on Barnum Lake?
No lake-specific regulation was found for Barnum Lake in Minnesota Rules or the DNR sunfish list. Statewide and zone regulations apply.
Ask us about Barnum Lake
Whether you’re buying, selling, or just curious, our team works Cass County lakes every day. Send us a note or call (218) 656-6469.
Sources: Minnesota DNR LakeFinder records, DNR fish surveys (latest 2001), 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.