Freshwater Fishing.
The Gravenhurst frontage of Lake Muskoka and Gull Lake within town carry a credible warmwater fishery — smallmouth bass, pike, walleye — with deep-basin lake trout in the broader Lake Muskoka system on the cold-water side. All Gravenhurst waters fall under FMZ 15 within the Central Bait Management Zone.
The brief.
FMZ 15 governs all Gravenhurst fishing. Lake trout season runs January 1 to September 30 (S-2 / C-1); brook trout the same window (S-5 / C-2); smallmouth and largemouth bass open the fourth Saturday in June through November 30 (S-6 / C-2); walleye opens January 1 through March 15 plus the third Saturday in May through December 31 (S-4 / C-2, with not more than one over 46 cm); muskellunge the first Saturday in June through December 15 (S-1 minimum 91 cm, C-0); northern pike January 1 through March 31 plus the third Saturday in May through December 31 (S-6 / C-2).
FMZ 15 sits inside the Central Bait Management Zone — live or dead baitfish and leeches cannot be transported into or out of a BMZ. Many waterbodies carry per-lake overrides on top of the baseline; check before fishing each spot.
Today's read.
Cool but comfortable for layered effort · light winds.
By the book.
- 01FMZ 15 fishing seasons (apply throughout Gravenhurst): lake trout Jan 1 – Sept 30 (S-2/C-1); brook trout Jan 1 – Sept 30 (S-5/C-2); smallmouth + largemouth bass 4th Sat June – Nov 30 (S-6/C-2); walleye Jan 1 – Mar 15 + 3rd Sat May – Dec 31 (S-4/C-2, max one over 46 cm); muskellunge 1st Sat June – Dec 15 (S-1 ≥91 cm, C-0); northern pike Jan 1 – Mar 31 + 3rd Sat May – Dec 31 (S-6/C-2)Source ↗
- 02FMZ 15 sits within the Central Bait Management Zone — live or dead baitfish/leeches may not be transported into or out of a BMZSource ↗
- 03Many lakes carry waterbody-specific overrides on top of the FMZ 15 baseline; check before fishingSource ↗
