Southern Alberta Lakes

28 lakes · Regional stillwater overview

Southern Alberta Lakes — Stillwater Hatches

Last reviewed 2026-05-21

Foothills and mountain lakes/reservoirs. Strong chironomid and callibaetis activity; damselflies and scuds in weedy littoral. Shorter ice-free season at elevation.

May hatches

Leech

Hirudinea

Moderatemedium

#8-1220-80 mm

Air 10–28°CWater 8–22°C

Foothills and mountain lakes/reservoirs. Strong chironomid and callibaetis activity; damselflies and scuds in weedy littoral. Shorter ice-free season at elevation.

Blue-winged Olive

Baetis spp.

Lowlow

#18-225-7 mm

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

Foothills and mountain lakes/reservoirs. Strong chironomid and callibaetis activity; damselflies and scuds in weedy littoral. Shorter ice-free season at elevation.

Midge

Chironomidae

Highhigh

#18-263-12 mm

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

Foothills and mountain lakes/reservoirs. Strong chironomid and callibaetis activity; damselflies and scuds in weedy littoral. Shorter ice-free season at elevation.

No photo available

Scud

Gammarus

Highmedium

#14-188-14 mm

Air 10–28°CWater 8–22°C

Foothills and mountain lakes/reservoirs. Strong chironomid and callibaetis activity; damselflies and scuds in weedy littoral. Shorter ice-free season at elevation.

Browse all Alberta lakes →