All Hatch Charts

Bow River near Cochrane

Southern Alberta · 6 active this month

Bow River near Cochrane Hatch Calendar

Last reviewed 2026-05-21

Foothills mainstem between Banff and Calgary. Similar hatch progression to lower mountain Bow.

May hatches

No photo available

Little Black Stonefly

Capniidae

Air 5–18°CWater 2–8°C

Foothills mainstem between Banff and Calgary. Similar hatch progression to lower mountain Bow.

Brown Dun

Brown Dun

Ameletus spp.

Air 12–22°C (optimal 14–20°C)Water 8–14°C (optimal 9–13°C)

Foothills mainstem between Banff and Calgary. Similar hatch progression to lower mountain Bow.

Midge

Midge

Chironomidae

Air -5–25°C (optimal 5–18°C)Water 2–20°C (optimal 4–15°C)

Foothills mainstem between Banff and Calgary. Similar hatch progression to lower mountain Bow.

Blue-winged Olive

Blue-winged Olive

Baetis spp.

Air 8–18°C (optimal 10–16°C)Water 5–12°C (optimal 6–11°C)

Foothills mainstem between Banff and Calgary. Similar hatch progression to lower mountain Bow.

No photo available

Grannom

Brachycentrus occidentalis

Air 10–22°CWater 6–14°C

Foothills mainstem between Banff and Calgary. Similar hatch progression to lower mountain Bow.

No photo available

March Brown

Rhithrogena spp.

Air 10–20°C (optimal 12–18°C)Water 6–12°C (optimal 7–11°C)

Foothills mainstem between Banff and Calgary. Similar hatch progression to lower mountain Bow.

View live flows & conditions for Bow River near Cochrane →