Grand Rapids Flowage
Marinette County, Wisconsin
About Grand Rapids Flowage
Grand Rapids Flowage earns its reputation as one of Marinette County's premier walleye fisheries, a mid-sized lake at 307 acres and up to 21 feet deep. The lake has public boat landing access, making it easy to launch for a day on the water. The fishery includes Northern Pike, Panfish, and Smallmouth Bass. Note that invasive species (Spiny Waterflea) have been documented here — clean your boat before leaving.
Bottom composition: 85% sand, 0% gravel, 0% rock, 15% muck
Type: flowage · Hydrology: DRAINAGE
Lake Location
45.37120° N, 87.66110° W
WBIC 610700 · Wisconsin DNRFish Species
Full table →Fishing Tips
- ·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
Grand Rapids Flowage has limited visibility and a gravel and sand bottom, making it better suited for boating and fishing than swimming. The 307-acre lake offers a quieter, more intimate swimming experience.
Nearby Dining
Local dining recommendations for Grand Rapids Flowage are coming soon. Know a great spot near Grand Rapids Flowage? Share it at staynorthern.com/contact. Looking for restaurants near Marinette County lakes? Visit staynorthern.com/eats for our full northwoods dining guide.
Insider Tips
Grand Rapids Flowage is one of Marinette 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 Grand Rapids Flowage 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
Spiny Waterflea
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
Spiny Waterflea has been documented in Grand Rapids Flowage. 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 Grand Rapids Flowage?
Grand Rapids Flowage is home to Largemouth Bass, Northern Pike (Common), Panfish (Common), Smallmouth Bass (Common), and Walleye. Wisconsin fishing regulations apply — check current seasons and size limits before heading out.
Is there a public boat launch on Grand Rapids Flowage?
Yes — Grand Rapids Flowage has a public boat landing providing watercraft access. Check for posted local ordinances at the landing before launching.
How big is Grand Rapids Flowage?
Grand Rapids Flowage has 307 acres in surface area, a maximum depth of 21 feet, a mean depth of 6 feet.
What is the bottom of Grand Rapids Flowage like?
The lake bottom is composed of 85% sand, 0% gravel, 0% rock, 15% muck. Sandy and gravel bottoms typically support good swimming and healthy fish habitat.
Are there invasive species in Grand Rapids Flowage?
Yes — Spiny Waterflea has been documented in Grand Rapids Flowage. 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 Grand Rapids Flowage located?
Grand Rapids Flowage is located in Marinette County, Wisconsin. GPS coordinates: 45.3712° N, 87.6611° W.
Are there vacation rentals on Grand Rapids Flowage?
Stay Northern is building the most complete rental directory for Marinette County lakes. Check our Grand Rapids Flowage vacation rentals listing — if none are available yet, check back soon or browse nearby Marinette County lake rentals.
Fishing Regulations
Current season regulations for Grand Rapids Flowage
Regulation data is not available for this lake. Check with the Wisconsin DNR for current season rules before fishing.
Regulations sourced from Wisconsin DNR fisheries data. Always verify current regulations before fishing.
Lake Details
- WBIC
- 610700
- County
- Marinette County
- Surface Area
- 307 acres
- Max Depth
- 21 ft
- Mean Depth
- 6 ft
- Bottom
- 85% sand, 0% gravel, 0% rock, 15% muck
- Lake Type
- flowage
- Coordinates
- 45.3712, -87.6611
Boat Rentals Nearby
Pontoon
Listing soonFishing Boat + Motor
Listing soonKayak / Canoe
Listing soonKnow a local boat rental operator near Grand Rapids Flowage? Let us know.
Boat Landings (1)
Wisconsin Public Service · NA
Lake data sourced from the Wisconsin DNR. Last updated 4/30/2026.