lake
Mary Lake — Big Cottonwood Cyn
Fairconditions
49°todaySunny
Today’s report
Mary Lake — Big Cottonwood Cyn is a fair bet today. The DWR last stocked brook trout (5,000 fish) on July 22. This Afternoon's forecast: sunny, 49°F.
- calm, fishable weather
Current conditions
Stocking
Last stocked Jul 22, 2026 — brook trout (5,000 fish).
| Date | Species | Quantity | Avg length |
|---|---|---|---|
| Jul 22, 2026 | brook trout | 5,000 | 3.03" |
| Jun 25, 2025 | brook trout | 5,000 | 3.01" |
| Jul 1, 2024 | brook trout | 5,001 | 2.92" |
| Jul 14, 2023 | brook trout | 5,005 | 2.68" |
| Jun 27, 2022 | brook trout | 5,040 | 2.75" |
| Jun 29, 2021 | brook trout | 5,003 | 2.79" |
Best time to fish Mary Lake — Big Cottonwood Cyn
The DWR has stocked Mary Lake — Big Cottonwood Cyn 6 times over the last 3 seasons, and 100% of those plants landed in June, July — the freshest fish and the easiest bite usually follow within a week or two of a stocking.
Species
Location
Nearby waters (within ~25 mi):
Catherine Lake — Big Cottonwood CynSalt Lake CountyFairTwin Lake — Big Cottonwood CynSalt Lake CountyFairPittsburgh Lake — American Fork CynUtah CountyFairShadow LakeSummit CountyFairBlanche Lake — Big Cottonwood CynSalt Lake CountyFairFlorence Lake — Big Cottonwood CynSalt Lake CountyFairWhite Pine Lake — Little Cottonwood CynSalt Lake CountyFairRed Pine Lake — Little Cottonwood CynSalt Lake CountyFair
Regulations
No water-specific rules listed for this water in the current Utah Fishing Guidebook — statewide general rules and daily limits apply (trout limit 4, combined). Verify in the current guidebook before you fish.
This week’s weather
This Afternoon
49°F
Sunny
Tonight
35°F
Mostly Clear
Sunday
46°F
Mostly Sunny
Sunday Night
34°F
Partly Cloudy
Monday
46°F
Mostly Sunny
Monday Night
37°F
Partly Cloudy
Tuesday
44°F
Mostly Sunny then Chance Showers And Thunderstorms
46% precip
Tuesday Night
36°F
Chance Showers And Thunderstorms then Slight Chance Light Rain
37% precip
Wednesday
44°F
Slight Chance Light Rain then Chance Showers And Thunderstorms
30% precip
Wednesday Night
35°F
Chance Light Rain
41% precip