Duncan
Cook County, Minnesota — DOW #16023200
43 Surveys
476.95
Acres
130 ft
Max Depth
46.8 ft
Mean Depth
5
Fish Species
10
Local Guides
DNR Fish Surveys
Catch-per-unit-effort (CPUE) data from Minnesota DNR fish population assessments on Duncan. Green = above normal range. Red = below normal.
Tullibee (Cisco)
| Date | Gear | CPUE | Normal Range | Avg Weight | Total Catch |
|---|---|---|---|---|---|
| 1996-08-13 | Deep gill nets | 17.2 | — | 0.60 lb | 103 |
| 1996-08-13 | Shallow gill nets | 2.0 | — | 0.70 lb | 6 |
| 1993-08-09 | Deep gill nets | 9.6 | — | 0.67 lb | 48 |
| 1993-08-09 | Shallow gill nets | 19.0 | — | 0.76 lb | 57 |
| 2001-08-06 | Shallow gill nets | 1.5 | — | 0.83 lb | 3 |
| 2001-08-06 | Deep gill nets | 24.0 | — | 0.79 lb | 96 |
| 2001-08-06 | Special gill nets | 11.0 | — | 0.82 lb | 11 |
Smallmouth Bass
| Date | Gear | CPUE | Normal Range | Avg Weight | Total Catch |
|---|---|---|---|---|---|
| 1996-08-13 | Shallow gill nets | 2.0 | — | 0.75 lb | 6 |
| 1996-08-13 | Deep gill nets | 0.2 | — | 1.44 lb | 1 |
| 1993-08-09 | Shallow gill nets | 1.3 | — | 0.72 lb | 4 |
| 2013-08-12 | Shallow gill nets | 0.3 | — | 0.37 lb | 1 |
| 2018-09-10 | Shallow gill nets | 0.3 | — | 0.21 lb | 1 |
| 2001-08-06 | Shallow gill nets | 3.5 | — | 0.69 lb | 7 |
Green Sunfish
| Date | Gear | CPUE | Normal Range | Avg Weight | Total Catch |
|---|---|---|---|---|---|
| 1996-08-13 | Shallow gill nets | 0.7 | — | 0.14 lb | 2 |
| 1993-08-09 | Shallow gill nets | 5.0 | — | 0.15 lb | 15 |
| 2013-08-12 | Shallow gill nets | 9.0 | — | 0.08 lb | 27 |
| 2018-09-10 | Shallow gill nets | 0.3 | — | 0.09 lb | 1 |
| 2001-08-06 | Shallow gill nets | 2.0 | — | 0.09 lb | 4 |
Yellow Perch
| Date | Gear | CPUE | Normal Range | Avg Weight | Total Catch |
|---|---|---|---|---|---|
| 1996-08-13 | Shallow gill nets | 8.3 | — | 0.11 lb | 25 |
| 1993-08-09 | Shallow gill nets | 1.0 | — | 0.53 lb | 3 |
| 2013-08-12 | Shallow gill nets | 1.7 | — | 0.26 lb | 5 |
| 2001-08-06 | Shallow gill nets | 2.0 | — | 0.35 lb | 4 |
Lake Trout
| Date | Gear | CPUE | Normal Range | Avg Weight | Total Catch |
|---|---|---|---|---|---|
| 1996-08-13 | Deep gill nets | 1.3 | — | 2.32 lb | 8 |
| 1993-08-09 | Shallow gill nets | 0.7 | — | 1.43 lb | 2 |
| 1993-08-09 | Deep gill nets | 3.8 | — | 1.81 lb | 19 |
| 2013-08-12 | Deep gill nets | 1.5 | — | 1.94 lb | 9 |
| 2013-08-12 | Shallow gill nets | 2.0 | — | 1.56 lb | 6 |
| 2018-09-10 | Shallow gill nets | 2.0 | — | 4.68 lb | 6 |
| 2018-09-10 | Deep gill nets | 4.2 | — | 1.68 lb | 25 |
| 2001-08-06 | Deep gill nets | 2.0 | — | 5.89 lb | 8 |
| 2001-08-06 | Special gill nets | 1.0 | — | 1.34 lb | 1 |
White Sucker
| Date | Gear | CPUE | Normal Range | Avg Weight | Total Catch |
|---|---|---|---|---|---|
| 1996-08-13 | Shallow gill nets | 21.0 | — | 1.07 lb | 63 |
| 1993-08-09 | Shallow gill nets | 0.7 | — | 1.85 lb | 2 |
| 2013-08-12 | Shallow gill nets | 0.7 | — | 2.38 lb | 2 |
| 2013-08-12 | Deep gill nets | 0.3 | — | 4.05 lb | 2 |
| 2018-09-10 | Deep gill nets | 0.5 | — | 3.12 lb | 3 |
| 2018-09-10 | Shallow gill nets | 2.0 | — | 2.85 lb | 6 |
| 2001-08-06 | Shallow gill nets | 1.0 | — | 1.17 lb | 2 |
| 2001-08-06 | Deep gill nets | 0.5 | — | 2.76 lb | 2 |
CIS
| Date | Gear | CPUE | Normal Range | Avg Weight | Total Catch |
|---|---|---|---|---|---|
| 2013-08-12 | Deep gill nets | 13.3 | — | 0.63 lb | 80 |
| 2013-08-12 | Shallow gill nets | 7.3 | — | 0.73 lb | 22 |
| 2018-09-10 | Shallow gill nets | 4.0 | — | 0.94 lb | 12 |
| 2018-09-10 | Deep gill nets | 22.3 | — | 0.83 lb | 134 |
Depth Maps & Lake Info
Map & Directions
Get DirectionsShowing 14 nearby bait & tackle shops on the map.
Nearby Bait & Tackle
Bear Track Outfitting Co.
Grand Marais, MN
★ 3.3Buck's Hardware
Grand Marais, MN
★ 4.5Clearwater BWCA Outfitters
Grand Marais, MN
★ 5Hungry Jack Canoe Outfitters
Grand Marais, MN
★ 4.7Lake Superior Trading Post
Grand Marais, MN
★ 4.6Moose Tracks
Grand Marais, MN
★ 4.5Northern Goods
Grand Marais, MN
★ 4.7The Fisherman's Daughter at Dockside Fish Market
Grand Marais, MN
★ 4.7Nearby Marinas
Resorts & Lodges Near Duncan
Plan your stay — fishing resorts and lodges near Duncan.
Fish Species
Species known to inhabit Duncan. Click any species for a full fishing guide.
Fishing Guides Near Duncan
Other Lakes in Cook County
Plan Your Trip to Duncan
- Weather forecast for Duncan — check wind, rain, and temperature before you go
- GPS: 48.0782°N, 90.4616°W — Get Directions
- View on MN DNR LakeFinder for the latest survey data and lake info
- Review Minnesota fishing regulations for season dates and limits
- A Minnesota fishing license is required for ages 16+ — buy online at dnr.state.mn.us
Data sourced from Minnesota DNR Division of Fish and Wildlife. Last verified: March 19, 2026. Learn how we maintain this data.