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Diamond Lake Fishing Report

|Diamond Lake, WA
81% confidence 55°F Rain 15 mph

Move to the south end flats and slow down with a small jig for perch or crappie – they’ll be picking off scraps in the warming shallows.

comprehensive plan Analyze Past Water Temperature Analyze Weather Conditions Analyze Species Behavior
Yellow perchBlack crappieBluegillRainbow troutLargemouth bassSmallmouth bassBrown trout

Rainbow and brown trout are biting best right now. Water at 55°F is right in their optimal zone (45–65°F), the warming trend has them active, and falling pressure is pushing a feeding window. Smallmouth are staging for pre-spawn but still sluggish at this temp. Largemouth are slow.

Why trout win:

  • 55°F is peak activity for both species – they’re metabolically ready to feed.
  • Warming trend (+6.3°F over recent readings) has fish moving shallower and more aggressively.
  • Falling pressure and light chop later today will trigger a surface and near-surface bite.

Next practical window:
This afternoon, 2–5 PM, when wind picks up to 15 mph. That chop will push bait and trout onto wind-blown banks, especially the north and east shores.

What to verify first:
Check the inlet creek at the north end and any wind-blown points for surface activity or cruising fish. If you see boils or jumping trout, that’s your spot. Also note water clarity – if stained, go with a brighter spoon or spinner.

How to fish it:

  • Primary: ¼-oz silver Kastmaster or Little Cleo spoon – cast and retrieve steady, just below the surface.
  • Backup: #2 Mepps Aglia in gold or rainbow trout pattern – slow-roll through the chop.
  • If trout are deep: switch to a 1/16-oz jig tipped with a worm or PowerBait under a bobber near the inlet.

If the bite dies:
Move to the south end flats and slow down with a small jig for perch or crappie – they’ll be picking off scraps in the warming shallows.