Boulder

St. Louis County, Minnesota — DOW #69037300

95 Surveys

3,259.66

Acres

18 ft

Max Depth

8.1 ft

Mean Depth

Fish Species

Local Guides

DNR Fish Surveys

Catch-per-unit-effort (CPUE) data from Minnesota DNR fish population assessments on Boulder. Green = above normal range. Red = below normal.

Walleye

Date	Gear	CPUE	Normal Range	Avg Weight	Total Catch
2023-09-28	Fall electrofishing	335.1	—	—	307
2021-09-22	Fall electrofishing	125.3	—	0.02 lb	183
1997-06-30	Standard gill nets	2.5 (below normal)	3.2 – 13.7	1.59 lb	38
1997-06-30	Standard trap nets	1.6 (normal)	0.6 – 2.0	1.90 lb	36
1997-06-30	Special electrofishing	48.4	—	0.04 lb	74
2008-07-14	Survey seining	1.7	—	—	15
2008-07-14	Standard gill nets	8.9 (normal)	3.2 – 13.7	0.80 lb	133
2008-07-14	Special trap nets	1.7	—	2.59 lb	22
2016-09-30	Special electrofishing	126.2	—	0.11 lb	165
2022-09-28	Fall electrofishing	88.5	—	0.08 lb	114
2018-07-09	Standard gill nets	13.7 (above normal)	3.2 – 13.7	1.02 lb	206
2018-07-09	Standard trap nets	2.9 (above normal)	0.6 – 2.0	1.51 lb	43
1993-07-07	Survey seining	1.0	—	—	9
1993-07-07	Standard gill nets	3.5 (normal)	3.2 – 13.7	1.77 lb	52
1993-07-07	Standard trap nets	1.4 (normal)	0.6 – 2.0	3.45 lb	30
2025-10-08	Fall electrofishing	368.4	—	0.01 lb	457
2002-07-08	Standard gill nets	10.0 (normal)	3.2 – 13.7	0.77 lb	150
2002-07-08	Standard trap nets	0.6 (normal)	0.6 – 2.0	1.09 lb	9
2002-07-08	Special electrofishing	147.9	—	0.03 lb	203

Northern Pike

Date	Gear	CPUE	Normal Range	Avg Weight	Total Catch
1997-06-30	Standard gill nets	2.3 (normal)	2.0 – 6.0	1.46 lb	34
1997-06-30	Standard trap nets	0.7	—	2.31 lb	16
2008-07-14	Standard gill nets	2.5 (normal)	2.0 – 6.0	3.14 lb	38
2008-07-14	Special trap nets	1.8	—	2.25 lb	23
2018-07-09	Standard gill nets	2.9 (normal)	2.0 – 6.0	1.34 lb	44
2018-07-09	Standard trap nets	1.3	—	1.52 lb	20
1993-07-07	Standard gill nets	2.2 (normal)	2.0 – 6.0	2.50 lb	33
1993-07-07	Standard trap nets	0.7	—	2.46 lb	14
2002-07-08	Standard gill nets	1.5 (below normal)	2.0 – 6.0	2.17 lb	23
2002-07-08	Standard trap nets	0.4	—	1.24 lb	6

Black Crappie

Date	Gear	CPUE	Normal Range	Avg Weight	Total Catch
1997-06-30	Standard gill nets	0.1 (below normal)	0.4 – 4.0	0.59 lb	2
1997-06-30	Standard trap nets	2.2 (normal)	0.3 – 4.6	0.36 lb	48
2008-07-14	Survey seining	0.1	—	—	1
2008-07-14	Standard gill nets	1.8 (normal)	0.4 – 4.0	0.46 lb	27
2008-07-14	Special trap nets	1.9	—	0.67 lb	24
2018-07-09	Standard gill nets	1.5 (normal)	0.4 – 4.0	0.29 lb	23
2018-07-09	Standard trap nets	5.3 (above normal)	0.3 – 4.6	0.59 lb	79
1993-07-07	Standard gill nets	0.6 (normal)	0.4 – 4.0	0.21 lb	9
1993-07-07	Standard trap nets	0.3 (below normal)	0.3 – 4.6	0.45 lb	6
2002-07-08	Standard gill nets	0.1 (below normal)	0.4 – 4.0	0.17 lb	1
2002-07-08	Standard trap nets	0.3 (below normal)	0.3 – 4.6	0.96 lb	4

Black Bullhead

Date	Gear	CPUE	Normal Range	Avg Weight	Total Catch
1997-06-30	Standard gill nets	134.9 (above normal)	2.6 – 124.4	0.36 lb	2023
1997-06-30	Standard trap nets	100.3 (above normal)	0.9 – 16.9	0.28 lb	2206
2008-07-14	Standard gill nets	1.3 (below normal)	2.6 – 124.4	0.60 lb	19
2008-07-14	Special trap nets	0.7	—	1.16 lb	9
2018-07-09	Standard gill nets	0.1 (below normal)	2.6 – 124.4	0.83 lb	1
2018-07-09	Standard trap nets	0.1 (below normal)	0.9 – 16.9	0.18 lb	1
1993-07-07	Standard trap nets	78.5 (above normal)	0.9 – 16.9	0.32 lb	1648
1993-07-07	Standard gill nets	225.8 (above normal)	2.6 – 124.4	0.25 lb	3387
2002-07-08	Standard gill nets	149.8 (above normal)	2.6 – 124.4	0.20 lb	2247
2002-07-08	Standard trap nets	0.7 (below normal)	0.9 – 16.9	0.46 lb	11

White Sucker

Date	Gear	CPUE	Normal Range	Avg Weight	Total Catch
1997-06-30	Standard gill nets	4.7 (normal)	3.0 – 11.0	3.63 lb	70
1997-06-30	Standard trap nets	1.7 (normal)	0.3 – 2.1	1.80 lb	38
2008-07-14	Survey seining	1.2	—	—	11
2008-07-14	Standard gill nets	4.7 (normal)	3.0 – 11.0	1.82 lb	71
2008-07-14	Special trap nets	0.7	—	2.95 lb	9
2018-07-09	Standard gill nets	2.7 (below normal)	3.0 – 11.0	2.28 lb	40
2018-07-09	Standard trap nets	3.3 (above normal)	0.3 – 2.1	2.58 lb	50
1993-07-07	Survey seining	4.8	—	—	43
1993-07-07	Standard gill nets	4.1 (normal)	3.0 – 11.0	3.57 lb	62
1993-07-07	Standard trap nets	0.4 (normal)	0.3 – 2.1	5.31 lb	9
2002-07-08	Standard gill nets	5.1 (normal)	3.0 – 11.0	1.71 lb	76
2002-07-08	Standard trap nets	0.7 (normal)	0.3 – 2.1	3.43 lb	10

Yellow Perch

Date	Gear	CPUE	Normal Range	Avg Weight	Total Catch
1997-06-30	Standard trap nets	0.4 (normal)	0.4 – 1.8	0.30 lb	9
1997-06-30	Standard gill nets	8.1 (normal)	4.7 – 15.8	0.21 lb	122
2008-07-14	Survey seining	32.9	—	—	296
2008-07-14	Standard gill nets	6.5 (normal)	4.7 – 15.8	0.30 lb	98
2008-07-14	Special trap nets	1.1	—	0.24 lb	15
2018-07-09	Standard trap nets	1.3 (normal)	0.4 – 1.8	0.31 lb	20
2018-07-09	Standard gill nets	7.1 (normal)	4.7 – 15.8	0.37 lb	106
1993-07-07	Standard trap nets	2.0 (above normal)	0.4 – 1.8	0.17 lb	42
1993-07-07	Survey seining	101.4	—	—	913
1993-07-07	Standard gill nets	8.7 (normal)	4.7 – 15.8	0.18 lb	130
2002-07-08	Standard trap nets	0.7 (normal)	0.4 – 1.8	0.24 lb	10
2002-07-08	Standard gill nets	7.1 (normal)	4.7 – 15.8	0.26 lb	106

Rock Bass

Date	Gear	CPUE	Normal Range	Avg Weight	Total Catch
1997-06-30	Standard trap nets	0.2 (normal)	0.2 – 1.1	0.46 lb	5
1997-06-30	Standard gill nets	0.2 (normal)	0.2 – 1.6	0.22 lb	3
2008-07-14	Standard gill nets	0.3 (normal)	0.2 – 1.6	0.31 lb	4
2018-07-09	Standard trap nets	0.6 (normal)	0.2 – 1.1	0.30 lb	9
2018-07-09	Standard gill nets	0.1 (below normal)	0.2 – 1.6	0.35 lb	1
1993-07-07	Standard gill nets	0.3 (normal)	0.2 – 1.6	0.61 lb	4
1993-07-07	Standard trap nets	0.8 (normal)	0.2 – 1.1	0.46 lb	17
2002-07-08	Standard trap nets	0.1 (below normal)	0.2 – 1.1	0.09 lb	1

Pumpkinseed

Date	Gear	CPUE	Normal Range	Avg Weight	Total Catch
1997-06-30	Standard trap nets	0.4 (normal)	0.4 – 3.6	0.43 lb	9
2008-07-14	Standard gill nets	0.2	—	0.16 lb	3
2008-07-14	Special trap nets	1.4	—	0.17 lb	18
2018-07-09	Standard trap nets	2.3 (normal)	0.4 – 3.6	0.19 lb	34
1993-07-07	Standard trap nets	0.9 (normal)	0.4 – 3.6	0.22 lb	19
2002-07-08	Standard trap nets	0.5 (normal)	0.4 – 3.6	0.14 lb	7

Spottail Shiner

Date	Gear	CPUE	Normal Range	Total Catch
2008-07-14	Survey seining	15.7	—	141
1993-07-07	Survey seining	1.7	—	15

Bluegill

Date	Gear	CPUE	Normal Range	Total Catch
2008-07-14	Survey seining	0.2	—	2

Johnny Darter

Date	Gear	CPUE	Normal Range	Total Catch
2008-07-14	Survey seining	0.2	—	2
1993-07-07	Survey seining	0.4	—	4

Golden Shiner

Date	Gear	CPUE	Normal Range	Avg Weight	Total Catch
1993-07-07	Standard trap nets	0.1	—	0.06 lb	1

Burbot

Date	Gear	CPUE	Normal Range	Avg Weight	Total Catch
1993-07-07	Standard gill nets	0.1 (normal)	0.1 – 0.3	0.36 lb	2

Depth Maps & Lake Info

View on MN DNR LakeFinder

Map & Directions

Get Directions

Showing 14 nearby bait & tackle shops on the map.

Nearby Bait & Tackle

Nearby Marinas

Anderson's Canoe Outfitters

Crane Lake, MN

(218) 780-6430

★ 4.9

Aronson Boat Works Inc

Tower, MN

(218) 753-4190

★ 4.5

Arrowhead Lodge

Kabetogama, MN

(218) 875-2141

★ 4.7

Bill's Boat Storage

Ely, MN

(218) 235-9824

★ 5

Birch Point Marine

Tower, MN

(218) 753-4404

★ 4.5

BP Marine Plus

Two Harbors, MN

(218) 830-2216

★ 5

Resorts & Lodges Near Boulder

Plan your stay — fishing resorts and lodges near Boulder.

C&B Rentals

Fishing Resort Hibbing

(952) 356-5234

Espland's

Fishing Resort Ely

(218) 365-5282

Lake Vermilion Ice Fishing

Fishing Resort Tower

(218) 290-2435

Piney Woods Retreat in Ely, Minnesota - Vacation Cabin Rental

Fishing Resort Ely

(218) 235-1212

View all 888 Minnesota resorts →

Fish Species

Species known to inhabit Boulder. Click any species for a full fishing guide.

Black Bullhead Black Crappie Burbot Northern Pike Pumpkinseed Rock Bass Walleye White Sucker Yellow Perch

Fishing Guides Near Boulder

218 Sportfishing

Fishing Guide

(218) 409-4744

Angler Management Duluth Charters

Fishing Guide

(218) 390-7933

Basswood Trails Guide Service

(218) 349-5226

(651) 270-7155

(218) 393-7121

Chasin' Tail Charters MN

Fishing Guide

(320) 980-6667

View all 33 guides →

Other Lakes in St. Louis County

Plan Your Trip to Boulder

Weather forecast for Boulder — check wind, rain, and temperature before you go
GPS: 47.0636°N, 92.1739°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.

Boulder

DNR Fish Surveys

Walleye

Northern Pike

Black Crappie

Black Bullhead

White Sucker

Yellow Perch

Rock Bass

Pumpkinseed

Spottail Shiner

Bluegill

Johnny Darter

Golden Shiner

Burbot

Depth Maps & Lake Info

Map & Directions

Nearby Bait & Tackle

Arrowhead Outdoors

Bass Pro Shops

Benders

Brimson Sportsman Corner

Canadian Waters Inc

Canoe Country Outfitters

Cenex

Cliff Wold's Outfitting Co.

Nearby Marinas

Anderson's Canoe Outfitters

Aronson Boat Works Inc

Arrowhead Lodge

Bill's Boat Storage

Birch Point Marine

BP Marine Plus

Resorts & Lodges Near Boulder

Fish Species

Fishing Guides Near Boulder

Other Lakes in St. Louis County

Aerie

Agassa

Agnes

Alden

Alruss

Angleworm

Plan Your Trip to Boulder