Lake Susan
Portage County, Wisconsin
About Lake Susan
Lake Susan is a scenic Portage County lake worth knowing about, a intimate 21-acre lake reaching 24 feet at its deepest. Access is limited, which keeps boat traffic low — a plus for solitude seekers. Note that invasive species (Eurasian Water-Milfoil, Purple Loosestrife) have been documented here — clean your boat before leaving.
Type: lake · Hydrology: SEEPAGE
Lake Location
44.54910° N, 89.55190° W
WBIC 996300 · Wisconsin DNRLocal's Guide
Fishing
Species-specific tips above. Wisconsin fishing license required for ages 16+. See current season regulations below.
View fishing regulations ↓Swimming
Lake Susan has limited visibility and a mixed bottom, making it generally good for swimming with gradual entry in most areas. The 21-acre lake offers a quieter, more intimate swimming experience.
Nearby Dining
Local dining recommendations for Lake Susan are coming soon. Know a great spot near Lake Susan? Share it at staynorthern.com/contact. Looking for restaurants near Portage County lakes? Visit staynorthern.com/eats for our full northwoods dining guide.
Insider Tips
Lake Susan is one of Portage County's lesser-known gems — the kind of place locals return to year after year. Early mornings before 9am offer the calmest water and best fishing before boat traffic picks up. If you're visiting for the first time, check the DNR boat landing locations before you arrive — some are well-marked, others take a local to find. Know something about Lake Susan that visitors should? Share a tip at staynorthern.com/contact — we add the best ones to this page.
Lake Conditions
Water Clarity
—
No data
Trophic Status
—
No data
Invasive Weeds
Present
Eurasian Water-Milfoil, Purple Loosestrife
Seasonal Notes
See below
Ice-out dates, peak fishing windows
Ice out typically arrives in mid-April on central Wisconsin lakes. Fishing season hits its stride in mid-May and runs strong through June and again in fall. Swimming conditions are best from late June through mid-August. Fall color peaks in early-to-mid October. Ice fishing season runs late December through February in most years.
Condition data sourced from Wisconsin DNR surveys. Real-time weed and clarity reports coming soon.
Invasive Species Present
Eurasian Water-Milfoil and Purple Loosestrife have been documented in Lake Susan. Clean, drain, and dry all watercraft and equipment before leaving.
Report sightings to the Wisconsin DNR invasive species hotline.Frequently Asked Questions
Can you boat on Lake Susan?
Lake Susan does not currently have a public boat landing listed in the Wisconsin DNR database. Shore fishing or kayak/canoe access may still be available — check local access points.
How big is Lake Susan?
Lake Susan has 21 acres in surface area, a maximum depth of 24 feet.
Are there invasive species in Lake Susan?
Yes — Eurasian Water-Milfoil and Purple Loosestrife have been documented in Lake Susan. Please clean, drain, and dry your watercraft and all equipment before leaving any Wisconsin water body to prevent the spread of invasive species.
Where is Lake Susan located?
Lake Susan is located in Portage County, Wisconsin. GPS coordinates: 44.5491° N, 89.5519° W.
Are there vacation rentals on Lake Susan?
Stay Northern is building the most complete rental directory for Portage County lakes. Check our Lake Susan vacation rentals listing — if none are available yet, check back soon or browse nearby Portage County lake rentals.
Fishing Regulations
Current season regulations for Lake Susan
| Species | Season | Min. Length | Daily Bag |
|---|---|---|---|
| Bullheads | Open All Year | No minimum length limit and the daily bag limit is unlimited. | — |
| Catfish | Open All Year | No minimum length limit and the daily bag limit is 10. | — |
| Cisco And Whitefish | Open All Year | No minimum length limit and the daily bag limit is 10. | — |
| Lake Sturgeon | Closed | No fishing allowed. | — |
| Largemouth Bass And Smallmouth Bass | May 2, 2026 to March 7, 2027 | The minimum length limit is 14" and the daily bag limit is 5. | — |
| Muskellunge And Hybrids | May 2, 2026 to December 31, 2026 on open water | The minimum length limit is 40" and the daily bag limit is 1. | — |
| Northern Pike | May 2, 2026 to March 7, 2027 | No minimum length limit and the daily bag limit is 5. | — |
| Paddlefish | Closed | No fishing allowed. | — |
| Panfish | Open All Year | No minimum length limit and the daily bag limit is 25. | — |
| Rock, Yellow, And White Bass | Open All Year | No minimum length limit and the daily bag limit is unlimited. | — |
| Rough Fish | Open All Year | No minimum length limit and the daily bag limit is unlimited. | — |
| Round Goby | Open All Year | The daily bag limit is 0, one may be killed and possessed for transport to a WDNR Office. | — |
| Ruffe | Open All Year | The daily bag limit is 0, one may be killed and possessed for transport to a WDNR Office. | — |
| Shovelnose Sturgeon | Closed | No fishing allowed. | — |
| Trout | See specific regulations | https://dnr.wisconsin.gov/topic/fishing/trout/ . | — |
| Walleye, Sauger, And Hybrids | May 2, 2026 to March 7, 2027 | The minimum length limit is 15" and the daily bag limit is 3. | — |
| White Perch | Open All Year | The daily bag limit is 0, one may be killed and possessed for transport to a WDNR Office. | — |
Regulations sourced from Wisconsin DNR fisheries data. Always verify current regulations before fishing.
Lake Details
- WBIC
- 996300
- County
- Portage County
- Surface Area
- 21 acres
- Max Depth
- 24 ft
- Lake Type
- lake
- Coordinates
- 44.5491, -89.5519
Boat Rentals Nearby
Pontoon
Listing soonFishing Boat + Motor
Listing soonKayak / Canoe
Listing soonKnow a local boat rental operator near Lake Susan? Let us know.
Lake data sourced from the Wisconsin DNR. Last updated 4/30/2026.