Townline Reservoir*
Marathon, Portage County, Wisconsin
About Townline Reservoir*
Townline Reservoir* is a scenic Marathon, Portage County lake worth knowing about, a mid-sized lake at 395 acres and up to 10 feet deep. Access is limited, which keeps boat traffic low — a plus for solitude seekers. Anglers primarily target Northern Pike.
Bottom composition: 60% sand, 0% gravel, 0% rock, 40% muck
Type: flowage · Hydrology: DRAINED
Lake Location
44.69170° N, 89.81610° W
WBIC 1414800 · Wisconsin DNRFish Species
Full table →Fishing Tips
- ·Northern pike are ambush predators — target weed edges, fallen timber, and points with large spoons or swimbaits.
- ·Spring pike fishing (ice-out through June) can be outstanding as they move into shallow, warming bays to spawn.
Local's Guide
Fishing
Species-specific tips above. Wisconsin fishing license required for ages 16+. See current season regulations below.
View fishing regulations ↓Swimming
Sandy bottom sections make for good swimming. No lifeguard on duty — swim at your own risk.
Content coming soon
Nearby Dining
Looking for supper clubs and bait shops near Townline Reservoir*? Local dining recommendations coming soon.
Content coming soon
Insider Tips
Local knowledge about Townline Reservoir* — best times to visit, quiet spots, and what the regulars know. Contributed tips coming soon.
Content coming soon
Lake Conditions
Water Clarity
—
No data
Trophic Status
—
No data
Invasive Weeds
Not documented
Clean lake
Seasonal Notes
Coming soon
Ice-out dates, peak fishing windows
Condition data sourced from Wisconsin DNR surveys. Real-time weed and clarity reports coming soon.
Frequently Asked Questions
What fish can you catch in Townline Reservoir*?
Townline Reservoir* is home to Northern Pike. Wisconsin fishing regulations apply — check current seasons and size limits before heading out.
Can you boat on Townline Reservoir*?
Townline Reservoir* 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 Townline Reservoir*?
Townline Reservoir* has 395 acres in surface area, a maximum depth of 10 feet.
What is the bottom of Townline Reservoir* like?
The lake bottom is composed of 60% sand, 0% gravel, 0% rock, 40% muck. Sandy and gravel bottoms typically support good swimming and healthy fish habitat.
Are there invasive species in Townline Reservoir*?
No invasive species are currently documented in Townline Reservoir* by the Wisconsin DNR. Always clean, drain, and dry your boat before leaving to help protect this lake.
Where is Townline Reservoir* located?
Townline Reservoir* is located in Marathon, Portage County, Wisconsin. GPS coordinates: 44.6917° N, 89.8161° W.
Are there vacation rentals on Townline Reservoir*?
Stay Northern is building the most complete rental directory for Marathon, Portage County lakes. Check our Townline Reservoir* vacation rentals listing — if none are available yet, check back soon or browse nearby Marathon, Portage County lake rentals.
Fishing Regulations
Current season regulations for Townline Reservoir*
| 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 | The minimum length limit is 26" and the daily bag limit is 2. | — |
| 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 is 15", but walleye, sauger, and hybrids from 20" to 24" may not be kept, and only 1 fish over 24" is allowed. 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
- 1414800
- County
- Marathon, Portage County
- Surface Area
- 395 acres
- Max Depth
- 10 ft
- Bottom
- 60% sand, 0% gravel, 0% rock, 40% muck
- Lake Type
- flowage
- Coordinates
- 44.6917, -89.8161
Boat Rentals Nearby
Pontoon
Listing soonFishing Boat + Motor
Listing soonKayak / Canoe
Listing soonKnow a local boat rental operator near Townline Reservoir*? Let us know.
Lake data sourced from the Wisconsin DNR. Last updated 3/24/2026.