Ailsa Lake is a stillwater in the St. Mary River watershed, E of White Grouse Mountain, S of Meachan Creek SW of St. Mary Lake. ~8.1 ha surface area.
No live gauge
No gauge readings are available for this water.
Season
Driving directions
At a glance
Fact
Details
Type
Stillwater
Watershed
St. Mary River
Size
~8.1 ha surface area
Fish
No records yet
Region 4 Regulations — guide reviewed 2026-07-31
Confirm the current BC freshwater fishing regulations (Region 4, Kootenay), including any bait, motor or ice-fishing limits for this lake, before you fish.
The water
Ailsa Lake lies E of White Grouse Mountain, S of Meachan Creek SW of St. Mary Lake; in the St. Mary River watershed. It covers ~8.1 ha surface area.
The fishing
Ailsa Lake fishes on classic stillwater lines: chironomids over the shoals, leech and attractor retrieves along the drop-offs, and depth or troll work to the shoal-and-drop-off structure. Match the season and confirm against a local report.
Fact
Details
Stillwater
St. Mary River watershed
8.1 ha
surface area
Conditions
•
Water-health signal: poor (health index 8), 1 species over 6 observations.
Access & the rules
Confirm the launch, parking and any motor/float or seasonal restrictions for Ailsa Lake locally before you commit a day; the map shows where the lake sits in its drainage.
Before you fish
Confirm the current BC freshwater fishing regulations (Region 4 – Kootenay) before you go. Official synopsis: gov.bc.ca fishing regulations.