All Hatch Charts
Oldman River near Fort Macleod
Southern Alberta · 4 active this month
Oldman River near Fort Macleod Hatch Calendar
Last reviewed 2026-05-21
July hatches
Midge
Chironomidae
Highmedium
#18-263-12 mm
Air -5–25°C (optimal 5–18°C)Water 2–20°C (optimal 4–15°C)
No photo available
Spotted Sedge
Hydropsyche spp.
Highmedium
#14-188-14 mm
Air 16–30°CWater 12–20°C
No photo available
Water Boatman
Corixidae
Highmedium
#12-168-12 mm
Air 10–28°CWater 8–22°C
No photo available
Backswimmer
Notonectidae
Highmedium
#10-1410-15 mm
Air 10–28°CWater 8–22°C