Caldron Falls Reservoir*
Marinette, Oconto County, Wisconsin
About Caldron Falls Reservoir*
Caldron Falls Reservoir* is a serious fishing destination in Marinette, Oconto County, known for both its musky and walleye populations, covering 1,063 acres with a maximum depth of 40 feet. The lake has public boat landing access, making it easy to launch for a day on the water. The fishery includes Largemouth Bass, Musky, and Northern Pike. Note that invasive species (Banded Mystery Snail, Curly-Leaf Pondweed, Eurasian Water-Milfoil, Phragmites (non-native), Zebra Mussel) have been documented here — clean your boat before leaving.
Bottom composition: 60% sand, 15% gravel, 10% rock, 15% muck
Type: flowage · Hydrology: DRAINAGE
Lake Location
45.35730° N, 88.23170° W
WBIC 545400 · Wisconsin DNRFish Species
Full table →Fishing Tips
- ·Musky fishing is best in early morning and evening. Work weedlines and structural transitions with large bucktails or soft swimbaits.
- ·Wisconsin musky season typically opens the first Saturday in May. The fall bite (September–October) is peak for trophy fish.
- ·Walleye feed most actively at dawn and dusk. Jig along deep structural breaks or troll crankbaits along weedlines at 6–8 ft depth.
- ·Night fishing under a full moon can produce excellent walleye results from late June through August.
- ·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.
- ·Largemouth bass relate to shallow structure. Work topwater lures at dawn in summer, then switch to soft plastics rigged weedless around lily pads and fallen wood.
- ·Bluegill and crappie stack up in 8–15 ft of water near weedlines. Small jigs tipped with a waxworm are hard to beat.
- ·Panfish are often excellent for kids and beginners — look for them around any dock or submerged brush piles.
Local's Guide
Fishing
Species-specific tips above. Wisconsin fishing license required for ages 16+. See current season regulations below.
View fishing regulations ↓Swimming
Caldron Falls Reservoir* has limited visibility and a gravel and sand bottom, making it better suited for boating and fishing than swimming. With 1,063 acres of water, there is plenty of room for boats and swimmers to share the lake comfortably.
Nearby Dining
Local dining recommendations for Caldron Falls Reservoir* are coming soon. Know a great spot near Caldron Falls Reservoir*? Share it at staynorthern.com/contact. Looking for restaurants near Marinette, Oconto County lakes? Visit staynorthern.com/eats for our full northwoods dining guide.
Insider Tips
Caldron Falls Reservoir* is one of Marinette, Oconto 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 Caldron Falls 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
Present
Banded Mystery Snail, Curly-Leaf Pondweed, Eurasian Water-Milfoil, Phragmites (non-native), Zebra Mussel
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
Banded Mystery Snail and Curly-Leaf Pondweed and Eurasian Water-Milfoil and Phragmites (non-native) and Zebra Mussel have been documented in Caldron Falls Reservoir*. Clean, drain, and dry all watercraft and equipment before leaving.
Report sightings to the Wisconsin DNR invasive species hotline.Frequently Asked Questions
What fish can you catch in Caldron Falls Reservoir*?
Caldron Falls Reservoir* is home to Largemouth Bass (Common), Musky (Common), Northern Pike (Common), Panfish, and Walleye. Wisconsin fishing regulations apply — check current seasons and size limits before heading out.
Is there a public boat launch on Caldron Falls Reservoir*?
Yes — Caldron Falls Reservoir* has 5 boat landings providing watercraft access. Check for posted local ordinances at the landing before launching.
How big is Caldron Falls Reservoir*?
Caldron Falls Reservoir* has 1,063 acres in surface area, a maximum depth of 40 feet, a mean depth of 15 feet.
What is the bottom of Caldron Falls Reservoir* like?
The lake bottom is composed of 60% sand, 15% gravel, 10% rock, 15% muck. Sandy and gravel bottoms typically support good swimming and healthy fish habitat.
Are there invasive species in Caldron Falls Reservoir*?
Yes — Banded Mystery Snail and Curly-Leaf Pondweed and Eurasian Water-Milfoil and Phragmites (non-native) and Zebra Mussel have been documented in Caldron Falls Reservoir*. 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 Caldron Falls Reservoir* located?
Caldron Falls Reservoir* is located in Marinette, Oconto County, Wisconsin. GPS coordinates: 45.3573° N, 88.2317° W.
Are there vacation rentals on Caldron Falls Reservoir*?
Stay Northern is building the most complete rental directory for Marinette, Oconto County lakes. Check our Caldron Falls Reservoir* vacation rentals listing — if none are available yet, check back soon or browse nearby Marinette, Oconto County lake rentals.
Fishing Regulations
Current season regulations for Caldron Falls 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 | May 2, 2026 to June 19, 2026 | The minimum length limit is 14" and the daily bag limit is 5. | — |
| Largemouth Bass And Smallmouth Bass | June 20, 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 50" 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, 25 panfish may be kept, but only 10 of any one species. | — |
| 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. | — |
| Smallmouth Bass | May 2, 2026 to June 19, 2026 | Fish may not be harvested (catch and release only). | — |
| 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
- 545400
- County
- Marinette, Oconto County
- Surface Area
- 1,063 acres
- Max Depth
- 40 ft
- Mean Depth
- 15 ft
- Bottom
- 60% sand, 15% gravel, 10% rock, 15% muck
- Lake Type
- flowage
- Coordinates
- 45.3573, -88.2317
Boat Rentals Nearby
Pontoon
Listing soonFishing Boat + Motor
Listing soonKayak / Canoe
Listing soonKnow a local boat rental operator near Caldron Falls Reservoir*? Let us know.
Boat Landings (5)
Peshtigo River State Forest · (715) 757-3965
Peshtigo River State Forest · (715) 757-3965
Gov. Thompson State Park · (715) 575-3979
Peshtigo River State Forest · (715) 757-3965
Peshtigo River State Forest · (715) 757-3965
Lake data sourced from the Wisconsin DNR. Last updated 4/30/2026.