Bosak Lake Fishing Report

Likely species (estimated)

• EstBlack Crappie — estimated, not a confirmed record82% confidence · based on 8 lakes within 40 mi
• EstBluegill — estimated, not a confirmed record82% confidence · based on 8 lakes within 40 mi
• EstLargemouth Bass — estimated, not a confirmed record93% confidence · based on 8 lakes within 40 mi
• EstNorthern Pike — estimated, not a confirmed record93% confidence · based on 8 lakes within 40 mi
• EstPumpkinseed — estimated, not a confirmed record82% confidence · based on 8 lakes within 40 mi
• EstWalleye — estimated, not a confirmed record51% confidence · based on 8 lakes within 40 mi
• EstYellow Perch — estimated, not a confirmed record82% confidence · based on 8 lakes within 40 mi

• Black CrappieEstimated

  Black Crappie feed most actively at Dawn and Dusk, when activity runs about 16% above the daily average across all four light windows.

  Typical Summer depth: 10-20 ft

  Black Crappie fishing report →
• BluegillEstimated

  Bluegill feed most actively at Dawn and Dusk, when activity runs about 33% above the daily average across all four light windows.

  Typical Summer depth: 10-20 ft

  Bluegill fishing report →
• Largemouth BassEstimated

  Largemouth Bass feed most actively at Dawn and Dusk, when activity runs about 21% above the daily average across all four light windows.

  Typical Summer depth: 8-20 ft

  Largemouth Bass fishing report →
• Northern PikeEstimated

  Northern Pike feed most actively at Dawn and Dusk, when activity runs about 27% above the daily average across all four light windows.

  Typical Summer depth: 6-20 ft

  Northern Pike fishing report →
• PumpkinseedEstimated

  Pumpkinseed feed most actively at Daytime, when activity runs about 33% above the daily average across all four light windows.

  Typical Summer depth: 3-10 ft

  Pumpkinseed fishing report →
• WalleyeEstimated

  Walleye feed most actively at Dawn and Dusk, when activity runs about 19% above the daily average across all four light windows.

  Typical Summer depth: 20-40 ft

  Walleye fishing report →
• Yellow PerchEstimated

  Yellow Perch feed most actively at Dawn and Dusk, when activity runs about 30% above the daily average across all four light windows.

  Typical Summer depth: 10-25 ft

  Yellow Perch fishing report →

Location

Bosak Lake · 45.6432, -92.3383

Map data © OpenFreeMap, OpenMapTiles, OpenStreetMap contributors

• Somers LakeLewis, WI1 mi
• Crooked LakeLewis, WI1 mi
• Tula LakeFrederic, WI2 mi
• Margaret LakeLewis, WI2 mi
• Godfrey LakeLewis, WI2 mi
• Godfrey Lake 1Lewis, WI2 mi

• GuideUnderstanding Solunar Feeding PeriodsSolunar tables show up in almost every fishing almanac, but most anglers have never seen the actual definition behind "major" and "minor" periods — or read the peer-reviewed testing that went looking for the effect in catch data and did not find it. Here is the theory, the astronomy Bitespan runs on real moon-transit data, the grade our own bite score gives it, and how to use a solunar period without building a trip around one.
• ArticleDoes Barometric Pressure Really Affect the Bite?"Fish bite best right before a storm" is the most repeated line in fishing folklore. We went back to the primary literature behind Bitespan's own bite-scoring model — lab feeding trials, a field movement study, and a controlled whole-lake angling experiment — to see what's actually been measured. It's messier, and more interesting, than the folklore.
• ArticleFishing a Cold Front: Why the Bite Dies and How to Beat It"The bite dies after a cold front" is angling gospel. We went back to the same primary studies behind Bitespan's own pressure model to separate what a falling-then-rising barometer actually does to fish from everything else a cold front drags in with it — the temperature drop, the wind shift, the bluebird sky.
• ArticleDoes the Full Moon Affect Fishing? What Solunar Data Actually Says"Fish the full moon" is repeated as confidently as any pressure-front folklore, but it's actually two different claims tangled together — moon PHASE and solunar PERIOD timing. We separated them, checked what Bitespan's own solunar math and bite-scoring model actually support, and were honest about where the evidence runs thin.