All Hatch Charts

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.

July hatches

No photo available

Backswimmer

Notonectidae

Moderatelow
#10-1410-15 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.

Grasshopper

Grasshopper

Acrididae

Moderatemedium
#8-1215-35 mm
Air 15–35°C (optimal 20–30°C)Water 10–22°C

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

Midge

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

Callibaetis

Callibaetis spp.

Highmedium
#14-188-12 mm
Air 14–28°C (optimal 16–26°C)Water 14–22°C (optimal 15–21°C)

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

Damselfly

Damselfly

Zygoptera

Highmedium
#12-1625-35 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.

Dragonfly

Dragonfly

Anisoptera

Highmedium
#6-1030-50 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.

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.

Leech

Leech

Hirudinea

Highmedium
#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.

No photo available

Phantom Midge

Chaoborus

Highmedium
#18-228-15 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.

No photo available

Water Boatman

Corixidae

Highmedium
#12-168-12 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.