lake

Grass Lake — Boulder Mtn

Garfield County · Southern region

Toughconditions▼ was Fair yesterday
27°todayMostly Clear

Today’s report

Grass Lake — Boulder Mtn is fishing tough today. The DWR last stocked brook trout (76 fish) on August 4. Tonight's forecast: mostly clear, 27°F.

Current conditions

Stocking

Last stocked Aug 4, 2026 — brook trout (76 fish).

DateSpeciesQuantityAvg length
Aug 4, 2026brook trout763.1"
Jul 13, 2026brook trout1492.93"
Jun 23, 2025brook trout1532.97"
Jun 25, 2024brook trout1522.62"
Jul 10, 2023brook trout1482.57"
Jul 7, 2022brook trout1552.96"
Sep 20, 2021cutthroat trout2002.32"
Jul 6, 2021brook trout1552.76"

Best time to fish Grass Lake — Boulder Mtn

The DWR has stocked Grass Lake — Boulder Mtn 8 times over the last 4 seasons, and 88% of those plants landed in June through August — the freshest fish and the easiest bite usually follow within a week or two of a stocking.

Species

brook trout

Location

38.05620, -111.43900 · Garfield County · 57 mi from Panguitch

Nearby waters (within ~25 mi):

Ledge Lake — Boulder Top SouthGarfield CountyToughHalf Moon Lake — Boulder Top SouthGarfield CountyToughEast Lake — Boulder Top SouthGarfield CountyToughHorseshoe Lake — Boulder Top SouthGarfield CountyToughCrescent Lake — Boulder Top SouthGarfield CountyToughCrater Lake — Boulder Top SouthGarfield CountyToughRim Lake — Boulder Top SouthGarfield CountyToughSpectacle Lake — Boulder Top SouthGarfield CountyTough

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

Tonight
27°F
Mostly Clear
Friday
43°F
Sunny
Friday Night
28°F
Mostly Clear
Saturday
43°F
Sunny
Saturday Night
32°F
Mostly Cloudy
Sunday
42°F
Partly Sunny
Sunday Night
30°F
Slight Chance Snow Showers
17% precip
Monday
40°F
Slight Chance Rain Showers
21% precip
Monday Night
32°F
Partly Cloudy then Chance Rain And Snow Showers
37% precip
Tuesday
38°F
Rain And Snow Showers Likely
66% precip