All Hatch Charts
North Saskatchewan River — Edmonton
Central Alberta · 3 active this month
North Saskatchewan River — Edmonton Hatch Calendar
Last reviewed 2026-05-21
Prairie reach — warm-water fishery; chironomids and corixids.
May hatches
No photo available
Water Boatman
Corixidae
Moderatemedium
#12-168-12 mm
Air 10–28°CWater 8–22°C
Prairie reach — warm-water fishery; chironomids and corixids.
Midge
Chironomidae
Highmedium
#18-263-12 mm
Air -5–25°C (optimal 5–18°C)Water 2–20°C (optimal 4–15°C)
Prairie reach — warm-water fishery; chironomids and corixids.
Blue-winged Olive
Baetis spp.
Highmedium
#18-225-7 mm
Air 8–18°C (optimal 10–16°C)Water 5–12°C (optimal 6–11°C)
Prairie reach — warm-water fishery; chironomids and corixids.