Midge
Midge
Chironomidae
- Season
- Nov–Mar
- Peak
- Feb, Dec
- Flies
- #22-28, WD-40
- Water temp
- 34–65°F
Beaverhead River Hatch Chart
Which insects hatch on the Beaverhead each month, when they peak, and the flies to match.
- 11Hatches
- 2Hatching in November
Hatching in November
-
MidgeMidge
#22-28, WD-40
-
Blue-Winged OliveMayfly
#18-22, Comparadun
Beaverhead River hatch calendar
From the Missouri Headwaters watershed hatch chart; timing on the Beaverhead can run earlier or later.
| Hatch | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Flies | Water temp |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Midge Midge Chironomidae | In season | Peak | In season | In season | Peak | #22-28, WD-40 | 34–65°F | |||||||
| Blue-Winged Olive Mayfly Baetis sp. | In season | Peak | In season | In season | Peak | In season | #18-22, Comparadun | 44–58°F | ||||||
| Skwala Stonefly Stonefly Skwala americana | Peak | In season | #8-10, Chubby Chernobyl | 44–54°F | ||||||||||
| Mother's Day Caddis Caddis Brachycentrus sp. | In season | Peak | #14-16, Elk Hair Caddis | 48–58°F | ||||||||||
| Pale Morning Dun Mayfly Ephemerella inermis | In season | Peak | Peak | In season | #16-18, Sparkle Dun | 55–68°F | ||||||||
| Salmonfly Stonefly Pteronarcys californica | Peak | In season | #4-6, Chernobyl Salmonfly | 50–60°F | ||||||||||
| Golden Stonefly Stonefly Hesperoperla pacifica | Peak | In season | #6-8, Stimulator | 55–65°F | ||||||||||
| Green Drake Mayfly Drunella grandis | Peak | In season | #10-12, Paradrake | 55–65°F | ||||||||||
| Hopper Season Terrestrial Melanoplus sp. | In season | Peak | In season | #8-12, Dave's Hopper | 65–78°F | |||||||||
| Trico Mayfly Tricorythodes sp. | In season | Peak | In season | #22-26, Trico Spinner | 60–72°F | |||||||||
| Mahogany Dun Mayfly Paraleptophlebia sp. | Peak | In season | #16, Comparadun | 52–62°F |
- In season
- Peak
- This month
Key hatches
Blue-Winged Olive
Mayfly
Baetis sp.
- Season
- Mar–May, Sep–Nov
- Peak
- Apr, Oct
- Flies
- #18-22, Comparadun
- Water temp
- 44–58°F
Skwala Stonefly
Stonefly
Skwala americana
- Season
- Mar–Apr
- Peak
- Mar
- Flies
- #8-10, Chubby Chernobyl
- Water temp
- 44–54°F
Mother's Day Caddis
Caddis
Brachycentrus sp.
- Season
- Apr–May
- Peak
- May
- Flies
- #14-16, Elk Hair Caddis
- Water temp
- 48–58°F
Pale Morning Dun
Mayfly
Ephemerella inermis
- Season
- May–Aug
- Peak
- Jun–Jul
- Flies
- #16-18, Sparkle Dun
- Water temp
- 55–68°F
Salmonfly
Stonefly
Pteronarcys californica
- Season
- May–Jun
- Peak
- May
- Flies
- #4-6, Chernobyl Salmonfly
- Water temp
- 50–60°F
Beaverhead River hatch FAQ
What hatches are on the Beaverhead?
11 hatches through the year, among them Midge, Blue-Winged Olive, Skwala Stonefly, Mother's Day Caddis, and Pale Morning Dun.
When do the hatches on the Beaverhead peak?
The chart peaks Midge in Feb, Dec, Blue-Winged Olive in Apr, Oct, Skwala Stonefly in Mar, and Mother's Day Caddis in May.
Where does this hatch chart come from?
From the Missouri Headwaters watershed hatch chart; timing on the Beaverhead can run earlier or later. Check local reports before you go.
