June, July and August — those are the months with the most insects recorded from northern Wisconsin, 23 in June, 21 in July and 15 in August. Wisconsin DNR classifies it as Class I and Class II, managed as wild and wild supplemented — that is the season and creel row to look up. WDNR classes most of its typed water as cold, and no gauge on it reports temperature, so the calendar below is the hatch record rather than a thermometer.
22 insects peak in September in northern Wisconsin. By month, not week.
Start with these — the patterns that match most of what is out now:
Blue-Winged Olive #16–22, Isonychia / Slate Drake #10–14, Little Yellow May #16–18, Trico #20–24
Tie onPheasant Tail Nymph nymph · Parachute Adams dry · Rusty Spinner dry
October Caddis #8–10, White Miller #14–18, Green Rock Worm / Green Weenie #10–14
Tie onElk Hair Caddis dry · Prince Nymph nymph · Stimulator dry
Cinnamon Flying Ant #16–20, Black Ant #14–20, Grasshopper #8–12, Leafhopper #18–22, Caterpillar #8–14
Tie onFoam Beetle terrestrial · Black Foam Ant terrestrial · Parachute Ant terrestrial
Crayfish #4–8, Minnows + Dace #2–10, Sculpin #2–8
Tie onZonker streamer · Woolly Bugger (Black) streamer · Woolly Bugger (Brown) streamer
Water Boatman #14–18, Cranefly #6–10, Aquatic Worm #10–16, Damselfly #10–14, Dragonfly #4–10, and 1 more
Tie onWoolly Bugger (Olive) streamer · Walt's Worm nymph · Woolly Bugger (Brown) streamer
Insects peaking each month. Midges, scuds and sculpins are left out: they peak every month, so counting them would flatten the bars.
| Insect | Months | Hook | Active at |
|---|---|---|---|
| Fish Eggs | October–January and April | #10–16 | 33–60 °F |
| Little Brown Stonefly | February–April | #12–16 | 38–50 °F |
| Blue-Winged Olive | March–May and September–November | #16–22 | 38–58 °F |
| Blackfly | April–June | #18–22 | 40–65 °F |
| Cranefly | April–June and September–October | #6–10 | 40–65 °F |
| Grannom | April–May | #14–16 | 48–58 °F |
| Green Rock Worm / Green Weenie | April–June and September–October | #10–14 | 45–68 °F |
| Hendrickson | April–May | #12–14 | 45–58 °F |
| Alderfly | May–June | #10–14 | 52–66 °F |
| Caterpillar | May–September | #8–14 | 55–75 °F |
| Crayfish | May–October | #4–8 | 55–78 °F |
| Giant Black Stonefly (Salmonfly) | May–June | #4–6 | 50–62 °F |
| Green Sedge | May–August | #12–16 | 48–64 °F |
| Light Cahill | May–July | #12–16 | 55–68 °F |
| Spotted / Tan Caddis | May–August | #14–18 | 55–70 °F |
| Sulphur | May–July | #14–18 | 52–68 °F |
| Black Ant | June–September | #14–20 | 55–80 °F |
| Brown Drake | June | #10–12 | 55–65 °F |
| Golden Stonefly | June–July | #6–10 | 55–68 °F |
| Gray Drake | June–July | #10–12 | 55–68 °F |
| Hex | June–July | #6–8 | 60–72 °F |
| Isonychia / Slate Drake | June–September | #10–14 | 55–70 °F |
| June Bug / Beetle | June–July | #10–14 | 58–75 °F |
| Leafhopper | June–September | #18–22 | 58–75 °F |
| Little Sister Caddis | June–August | #16–20 | 60–74 °F |
| Little Yellow May | June–September | #16–18 | 58–70 °F |
| Little Yellow Sally | June–August | #14–16 | 55–68 °F |
| Pale Morning Dun | June–July | #14–18 | 50–65 °F |
| Annual Cicada | July–August | #6–10 | 60–78 °F |
| Grasshopper | July–September | #8–12 | 60–80 °F |
| Trico | July–September | #20–24 | 58–72 °F |
| White Miller | July–September | #14–18 | 60–74 °F |
| Cinnamon Flying Ant | August–September | #16–20 | 58–78 °F |
| October Caddis | September–October | #8–10 | 45–58 °F |
| Water Boatman | September–November | #14–18 | 45–65 °F |
| Aquatic Worm | all year | #10–16 | 35–70 °F |
| Damselfly | all year | #10–14 | 55–78 °F |
| Dragonfly | all year | #4–10 | 55–78 °F |
| Leech | all year | #2–10 | 35–75 °F |
| Midge | all year | #18–24 | 33–75 °F |
| Minnows + Dace | all year | #2–10 | 35–78 °F |
| Sculpin | all year | #2–8 | 33–72 °F |
Wisconsin publishes no season on this reach in the file this site reads. Wisconsin DNR classifies it as Class I, Class II, managed as wild, wild supplemented, and that is the row to look up in the digest — the season and creel rules follow the classification rather than the river. What the state designates on this water → Wisconsin regulations →
No gauge on this river reports water temperature. WDNR classes its typed water as Cold, which is a classification and not a measurement.
West Branch Shioc River — live water temperature, regulations and access