Big Swan Lake
Todd County, Minnesota, near Burtrum. DNR lake ID 77002300.
Big Swan Lake is a 946.6-acre lake in Todd County, Minnesota, near Burtrum. Its deepest point reaches 45 ft, and about 43% of the lake is shallower than 15 feet. Summer water clarity averages 9.1 feet in Minnesota Pollution Control Agency monitoring, which places it in the eutrophic nutrient class. It is not on the DNR infested waters list as of September 2026. DNR surveys document walleye, northern pike, largemouth bass, black crappie, bluegill, yellow perch.
Buying or selling on Big Swan 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 Big Swan LakeWhat’s my Big Swan Lake property worth?Call (218) 656-6469
Quick facts
| DNR lake ID | 77002300 |
|---|---|
| County | Todd County, near Burtrum |
| Surface area | 946.6 acres |
| Maximum depth | 45 ft |
| Mean depth | 18.0 ft |
| Share under 15 ft | 43% |
| Water clarity (summer) | 9.1 ft through 2025 |
| Phosphorus (summer) | 175.6 µg/L |
| Algae, chlorophyll-a (summer) | 20.3 µg/L |
| Nutrient class | Eutrophic |
| Clarity trend | Clearer (2016 to 2025) |
| Invasive species | Not on DNR infested waters list (Sept 2026) |
| Public water accesses | 1 |
Water quality
Summer averages from Minnesota Pollution Control Agency monitoring through 2025: clarity 9.1 ft, phosphorus 175.6 µg/L, algae (chlorophyll-a) 20.3 µg/L. Using the Carlson trophic state index, Big Swan Lake rates as eutrophic. Summer clarity trend 2016 to 2025: clearer.
Fishing on Big Swan Lake
The most recent DNR standard fish survey was in 2022 (4 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 | trap | 4.2 | 0.2 to 0.8 |
| Northern pike | trap | 18.6 | n/a |
| Black crappie | trap | 2.8 | 0.4 to 2.3 |
| Bluegill | trap | 0.2 | 4.4 to 49.0 |
| Largemouth bass | trap | 0.8 | 0.3 to 1.3 |
Largest fish measured in recent DNR samples: Largemouth bass 19.0 in (2022), Walleye 27.0 in (2022), Northern pike 35.0 in (2022).
Game and panfish documented since 2005: Walleye, Northern pike, Largemouth bass, Black crappie, Bluegill, Yellow perch, Pumpkinseed, Hybrid sunfish, Rock bass, Green sunfish, Burbot, Bowfin, Common carp, White sucker, Yellow bullhead, Brown bullhead, Black bullhead.
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
- Big Swan Lake: 1 concrete slab launch ramp, 1 dock, 14 trailer spaces. 2.5 mi N of Grey Eagle on Cnty Rd 102 to SE shore. Directions
DNR water access records (2023). Confirm current conditions with the DNR.
Nearby lakes
- Long Lake 1.3 mi, Todd County
- Mountain Lake 1.9 mi, Todd County
- Bass Lake 2.0 mi, Todd County
- Lady Lake 2.4 mi, Todd County
- Buck Lake 2.8 mi, Todd County
- Moose Lake 2.9 mi, Todd County
- Mons Lake 3.3 mi, Todd County
- Twin Lake 3.5 mi, Todd County
Questions about Big Swan Lake
How deep is Big Swan Lake?
Big Swan Lake reaches a maximum depth of 45 ft according to Minnesota DNR records. About 43% of the lake is shallower than 15 feet.
How big is Big Swan Lake?
Big Swan Lake covers about 946.6 acres in Todd County, Minnesota.
How clear is Big Swan Lake?
Summer water clarity on Big Swan Lake averages 9.1 feet (Secchi depth) in MPCA monitoring through 2025. Its trophic state is eutrophic.
Does Big Swan Lake have zebra mussels or other invasive species?
Big Swan 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.
What fish are in Big Swan Lake?
Minnesota DNR surveys document walleye, northern pike, largemouth bass, black crappie, bluegill, yellow perch, pumpkinseed, hybrid sunfish, rock bass, green sunfish in Big Swan Lake. The most recent standard survey was in 2022.
Where is the public boat access on Big Swan Lake?
Big Swan Lake has 1 public water access site on DNR record: Big Swan Lake.
How is the walleye population on Big Swan Lake?
In Minnesota DNR net surveys from 1991 to 2020, walleye numbers on Big Swan 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 Big Swan Lake?
Homes on Big Swan 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 Big Swan Lake and nearby lakes, including off-market opportunities when available.
What is it like to live on Big Swan Lake?
A mid-size lake with room for boating and fishing, about 43% shallow shoreline under 15 feet, and summer clarity around 9.1 feet. Conditions vary by property, so walk the frontage and ask us what similar homes have sold for.
Are there special fishing regulations on Big Swan Lake?
No lake-specific regulation was found for Big Swan Lake in Minnesota Rules or the DNR sunfish list. Statewide and zone regulations apply.
Ask us about Big Swan Lake
Whether you’re buying, selling, or just curious, our team works Todd County lakes every day. Send us a note or call (218) 656-6469.
Sources: Minnesota DNR LakeFinder records, DNR fish surveys (latest 2022), 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.