BirdTroutOpen the map When to fish Crooked Creek, Minnesota
June, July and August — those are the months with the most insects recorded from northern Wisconsin, across the state line, 23 in June, 21 in July and 15 in August. Minnesota DNR classifies it as Designated trout stream, managed as designated — that is the season and creel row to look up.
What's likely in September
22 insects peak in September in northern Wisconsin, across the state line — none are filed under Minnesota. By month, not week.
Start with these — the patterns that match most of what is out now:
Mayflies
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
Caddis
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
Terrestrials
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, scuds and baitfish
Crayfish #4–8, Minnows + Dace #2–10, Sculpin #2–8
Tie onZonker streamer · Woolly Bugger (Black) streamer · Woolly Bugger (Brown) streamer
Worms, leeches and the rest
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
The hatch calendar
Insects peaking each month. Midges, scuds and sculpins are left out: they peak every month, so counting them would flatten the bars.
Every insect recorded here, by month (42)
| 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 |
The season
Minnesota publishes no season on this reach in the file this site reads. Minnesota DNR classifies it as Designated trout stream, managed as designated, 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 → Minnesota regulations →
Water temperature through the year
No gauge on this river reports water temperature. MNDNR classes its typed water as unrecorded, which is a classification and not a measurement.
More about Crooked Creek
Crooked Creek — live water temperature, regulations and access