Boulder County · lake · 2 acres
Castle Lake
Castle Lake is a lake in Boulder County, Colorado. FishableWaters aggregates every stocking record for this water from Colorado's fish & wildlife agency; the latest schedule and today's bite windows are above.
Best days this week
Days near a new or full moon tend to fish best.
Today's bite windows
Conditions, next 3 days
Today
Overcast
63°
44°
18 mph
23%
Sat
Overcast
67°
46°
11 mph
13%
Sun
Overcast
77°
49°
8 mph
4%
→ pressure steadyStable weather — expect a normal bite.
Stocking ledger
No published stocking records yet. This water stays in our books — the ledger begins the hour its state agency publishes a record.
Angler reports
What's biting
No reports yet — be the first
Best bite times
No reports yet
Field notes
No notes yet
Nearby waters
- Lion Lake Number 10.3 mi
- Castle Lakes0.7 mi
- Lion Lake Number 20.7 mi
- Thunder Lake0.8 mi
- Snowbank Lake0.9 mi
- Keplinger Lake1.0 mi
- Box Lake1.4 mi
- Falcon Lake1.2 mi
Seasons, limits, and rules are the state's call — check the official CO regulations and buy your license before you go. We link the source; we never restate the rules.
Castle Lake fishing — FAQ
Do I need a license to fish Castle Lake?+
Yes — Colorado requires a fishing license. Buy one from the state and check current seasons and limits before you go; both are linked on this page.
Where is Castle Lake?+
Castle Lake is a lake in Boulder County, Colorado. Driving directions and an interactive topo map are on this page.