About Mullet Marsh 15 Reservoir
Mullet Marsh 15 Reservoir is a scenic Fond du Lac County lake worth knowing about, covering 344 acres. Access is limited, which keeps boat traffic low — a plus for solitude seekers.
Type: flowage · Hydrology: DRAINAGE
Lake Location
43.74420° N, 88.20230° W
WBIC 56000 · 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
Mullet Marsh 15 Reservoir has limited visibility and a mixed bottom, making it generally good for swimming with gradual entry in most areas. The 344-acre lake offers a quieter, more intimate swimming experience.
Nearby Dining
Local dining recommendations for Mullet Marsh 15 Reservoir are coming soon. Know a great spot near Mullet Marsh 15 Reservoir? Share it at staynorthern.com/contact. Looking for restaurants near Fond du Lac County lakes? Visit staynorthern.com/eats for our full northwoods dining guide.
Insider Tips
Mullet Marsh 15 Reservoir is one of Fond du Lac 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 Mullet Marsh 15 Reservoir 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
Not documented
Clean lake
Seasonal Notes
See below
Ice-out dates, peak fishing windows
Ice out arrives in late March to early April on southern Wisconsin lakes. Bass and panfish fishing is excellent from early May onward. Swimming season runs from early June through September. Fall color peaks in mid-October. Ice fishing is possible in most winters but season length varies — check conditions before heading out.
Condition data sourced from Wisconsin DNR surveys. Real-time weed and clarity reports coming soon.
Frequently Asked Questions
Can you boat on Mullet Marsh 15 Reservoir?
Mullet Marsh 15 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 Mullet Marsh 15 Reservoir?
Mullet Marsh 15 Reservoir has 344 acres in surface area.
Are there invasive species in Mullet Marsh 15 Reservoir?
No invasive species are currently documented in Mullet Marsh 15 Reservoir by the Wisconsin DNR. Always clean, drain, and dry your boat before leaving to help protect this lake.
Where is Mullet Marsh 15 Reservoir located?
Mullet Marsh 15 Reservoir is located in Fond du Lac County, Wisconsin. GPS coordinates: 43.7442° N, 88.2023° W.
Are there vacation rentals on Mullet Marsh 15 Reservoir?
Stay Northern is building the most complete rental directory for Fond du Lac County lakes. Check our Mullet Marsh 15 Reservoir vacation rentals listing — if none are available yet, check back soon or browse nearby Fond du Lac County lake rentals.
Fishing Regulations
Current season regulations for Mullet Marsh 15 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 25. | — |
| 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 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
- 56000
- County
- Fond du Lac County
- Surface Area
- 344 acres
- Lake Type
- flowage
- Coordinates
- 43.7442, -88.2023
Boat Rentals Nearby
Pontoon
Listing soonFishing Boat + Motor
Listing soonKayak / Canoe
Listing soonKnow a local boat rental operator near Mullet Marsh 15 Reservoir? Let us know.
Lake data sourced from the Wisconsin DNR. Last updated 4/30/2026.