Minnesota · Cass County
Sylvan Lake Fishing guide
Sylvan Lake sits in Cass County, Minnesota, and covers 894 acres, reaching 57 ft at its deepest point. Secchi readings average around 19 ft of visibility. The Minnesota DNR has surveyed the lake 15 times, most recently in 2023, with walleye, largemouth bass, smallmouth bass and northern pike in the nets.
DNR survey data
Fish species
Largemouth bassJust a few13.4per hr (electrofishing)11"Typical15"Biggest
Lengths measured · 35 fish
Recent · 2021Lengths measured · 35 fish
2021Lengths measured · 18 fish
2014Lengths measured · 17 fish
2008Lengths measured · 184 fish
2004Northern pikeGood numbers12.3per gill net18"Typical37"Biggest
Lengths measured · 162 fish
Recent · 2021Lengths measured · 162 fish
2021Lengths measured · 87 fish
2014Lengths measured · 92 fish
2008Lengths measured · 113 fish
2004BluegillJust a few16.3per trap net7"Typical9"Biggest
Lengths measured · 497 fish
Recent · 2021 + 2023Lengths measured · 284 fish
2023Lengths measured · 213 fish
2021Lengths measured · 254 fish
2017Lengths measured · 119 fish
2014CrappieJust a few1.4per trap net9"Typical13"Biggest
Lengths measured · 90 fish
Recent · 2021 + 2023Lengths measured · 66 fish
2023Lengths measured · 24 fish
2021Lengths measured · 125 fish
2017Lengths measured · 30 fish
2014Yellow perchFair numbers3.3per gill net6"Typical10"Biggest
Lengths measured · 41 fish
Recent · 2021Lengths measured · 41 fish
2021Lengths measured · 20 fish
2014Lengths measured · 17 fish
2008Lengths measured · 23 fish
2004Rock bassGood numbers1.2per trap net7"Typical9"Biggest
Lengths measured · 16 fish
Recent · 2021Lengths measured · 16 fish
2021Lengths measured · 18 fish
2014Lengths measured · 11 fish
2008Lengths measured · 25 fish
2004Rates come from standard DNR survey gear (gill nets, trap nets, electrofishing), judged against statewide benchmarks for the same gear, so the same number of fish per net can read differently for two species. Where the standard gear can't count a species reliably, only presence and size are listed. Typical is the middle fish of those measured. Open a row for the full length spread, survey by survey.
How to fish Sylvan Lake through the year
Northern pike
- Spring
- Pike are in the shallow bays and along new weed growth. At 19 ft of clarity, fish them deeper and lighter than usual.
- Early summer
- Pike are on the outside weed edge and points.
- Summer
- Pike are on the deep weed edge and points near the coolest water they can find. On a lake that drops to 57 ft, check the deep edge of that structure too.
- Fall
- Pike are on the last green weeds and the breaks beside them, feeding heavily as the water drops.
Walleye
- Spring
- Walleye are shallow, on and just off the spawning flats and the first green weeds. At 19 ft of clarity, fish them deeper and lighter than usual.
- Early summer
- Walleye are setting up on the outside weed edge, points and shallow structure.
- Summer
- Walleye are working the weed edge, points and any wind-blown structure. On a lake that drops to 57 ft, check the deep edge of that structure too.
- Fall
- Walleye are packing onto the sharpest breaks and points as the water cools, in big schools with short windows.
Season patterns for each species. Open the live map for today's wind, light and water temp.
Size history
Biggest fish by survey year
| Survey year | Northern pike | Walleye | Largemouth bass |
|---|---|---|---|
| 2021 | 37" | 23" | 15" |
| 2014 | 34" | 23" | 14" |
| 2011 | — | 22" | — |
| 2008 | 39" | 31" | 16" |
| 2004 | 32" | 23" | 19" |
| 2001 | 30" | 27" | 11" |
| 1998 | 31" | 23" | 17" |
| 1993 | 35" | 26" | 17" |
Longest fish measured by DNR survey crews in each year's nets. Survey gear samples the population, so the lake usually holds larger fish than any survey measured.
Suggested tackle
What to bring
Top presentations for this lake's structure and clarity:
Northern pike · Soft plastics
Paddletail Swimbait on Jighead
4–5" paddletail swimbait on a ball-head swimbait jighead
Northern pike · Muskie & pike
Soft Rubber (Bull Dawg / Medusa)
10" soft rubber body bait
Walleye · Live bait
Live-Bait (Lindy) Rig + Leech/Crawler
jumbo leech or half a nightcrawler
Walleye · Trolling
Leadcore Line + Crankbaits
4–5" mid-diving crankbait behind a long leadcore run
Largemouth bass · Soft plastics
Texas-Rigged Worm
7" ribbon-tail or straight-tail plastic worm
Largemouth bass · Soft plastics
Free Rig
Creature bait or magnum finesse worm
Full setups, including hooks, weights and line, are on the live map. As an Amazon Associate I earn from qualifying purchases.
DNR stocking records
Stocking history
| Year | Species | Stocked |
|---|---|---|
| 2025 | Walleye | 4,950 yearlings |
| 2021 | Walleye | 2,745 fingerlings |
| 2016 | Walleye | 1,606 fingerlings |
MN DNR · in their words
From the 2023 survey
A trap net assessment was conducted on Sylvan Lake on May 15-17, 2023, to monitor the Black Crappie and Bluegill populations. Sylvan Lake has a special regulation limiting the daily possession to five Sunfish and five Crappies. The reduced daily limit began in 2005.
Black Crappies ranged in length from 4.9 to 13.3 inches. Average length was 9.2 inches and 62% of the Crappies measured 9 inches or longer.
Bluegills ranged in length from 4.0 to 9.3 inches. Average length was 7.4 inches and 76% of the Bluegills measured 7 inches or longer.
The five Crappie and five Sunfish daily limits have been successful in maintaining the quality panfish angling opportunities in Sylvan Lake.
Narrative text from the Minnesota DNR lake survey.
Recent reports
Sylvan Lake fishing reports
Recent reports on Sylvan Lake from guides, tournaments and regular anglers. Anything posted in the last two weeks also bumps the matching spots on the live map, so you'll see a "matches a recent report" tag on them.
Public water access
Getting on the water
- DNR access: East end of lake in small bay.
DNR bathymetry
Sylvan Lake depth map
Within 30 miles
Nearby lakes
- Dade Lake · 99 ac · 1.9 mi
- Green Bass Lake · 44 ac · 3.1 mi
- Pillager Lake · 205 ac · 3.6 mi
- Beauty Lake · 19 ac · 3.7 mi
- Sylvan Lake · 322 ac · 3.7 mi
- Whipple Lake · 301 ac · 4.5 mi
- Rock Lake · 261 ac · 5.3 mi
- Gull Lake · 10,010 ac · 5.4 mi
Quick answers
Frequently asked questions
How deep is Sylvan Lake?
Sylvan Lake reaches 57 ft at its deepest point; about 41% of the lake is littoral (15 ft or shallower).
How big is Sylvan Lake?
Sylvan Lake covers 894 acres with about 11.1 miles of shoreline.
How clear is the water in Sylvan Lake?
DNR Secchi readings on Sylvan Lake average 19 ft of visibility, clear water for a Minnesota lake.
What fish are in Sylvan Lake?
Minnesota DNR surveys (most recently 2023) record walleye, largemouth bass, smallmouth bass, northern pike, bluegill, crappie, yellow perch, rock bass.
Is Sylvan Lake stocked?
Yes. The DNR stocked walleye in 2025; the stocking table on this page lists every year back to 2016.
Does Sylvan Lake have a public access?
Yes. Sylvan Lake has one public access site: DNR access (East end of lake in small bay.).
How big do northern pike get in Sylvan Lake?
The biggest northern pike measured in recent DNR surveys taped 37"; the size-history table on this page tracks the biggest fish in each survey back to 1993.
When was Sylvan Lake last surveyed?
The Minnesota DNR last surveyed Sylvan Lake in 2023, the most recent of 15 surveys on record.
Page updated .
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