Waterbody recordPP1
St. Mary River
St. Mary River (mainstem upstream of St. Mary Reservoir; includes tributaries except Lee Creek) is a south Alberta stream near Cardston popular for trout and northern pike fishing. Regulations: June 16–Aug 31 — bait ban; daily limit 2 trout, rainbow and cutthroat minimum 35 cm, mountain whitefish up to 5 fish (minimum 30 cm), northern pike limit 3; Sept 1–Oct 31 — bait ban; no trout retention (0 trout), northern pike limit 3.
StreamWU PP149.49493, -112.98585
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Regulations
Waterbody-specific regulationMainstem upstream of St Mary Reservoir; Includes tributaries except Lee CreekOPEN JUNE 16 TO AUG.
31Trout 2 troutView details
Season
OPEN JUNE 16 TO AUG.
31
Bait allowed
Bait ban
Total trout
2 trout
Mountain whitefish
5 over 30 cm
Northern pike
3 fish
Rainbow trout
over 35
cm
Cutthroat trout
over
35 cm
Last updated: Apr 08, 2026
Waterbody-specific regulationMainstem upstream of St Mary Reservoir; Includes tributaries except Lee CreekOPEN SEPT. 1 TO OCT. 31Trout 0 troutView details
Season
OPEN SEPT. 1 TO OCT. 31
Bait allowed
Bait ban
Total trout
0 trout
Northern pike
3 fish
Last updated: Apr 08, 2026
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