Oregon Fishing Reports ยท Lakes ยท Southwest Region
Diamond Lake below Mount Thielsen is a productive Cascade lake that grows rainbows fast on chironomids and scuds.
Looking for the latest Diamond Lake fishing report? This page is updated by the AvidMax fly shop team with current conditions, wind, stocking news and the flies working now at Diamond Lake.
Water level
Wind forecast
Diamond Lake fishing report
Updated November 7, 2026.
Late-season rainbows are feeding hard.
Chironomids and scuds along the weed edges.
Stocking report
See the ODFW weekly trout stocking schedule for the latest stocking at Diamond Lake and other Oregon waters.
Load your fly box
Before you head to Diamond Lake, bring: Zebra Midge #14-18, Kaufmann', s Scud #12-14, Mini Leech #8-10, Balanced Leech #10-12, Balanced Bou Leech #10-12, Woolly Bugger #6-10, Slump Buster #6-8, Egg #12-14, Scud Bomb #12-16.
Flies working right now
The flies above that we have in stock right now.
Diamond Lake lake details
| Access | Resort, ramps and campgrounds off State Route 138. |
|---|---|
| Elevation | About 5,180 ft |
| Nearest town | Diamond Lake, Oregon |
| Best season | Late spring through fall |
| Fish | Rainbow trout |
| Regulations | Check the Oregon Department of Fish and Wildlife regulations and in-season changes before you go. An Oregon angling license is required for anglers 12 and older, plus a combined tag for steelhead and salmon. |
| Leaders and tippet | 9 to 12 ft leaders, 4X tippet |
| Ice fishing | Ice fishing in winter. |
| Camping | Umpqua National Forest campgrounds |
| Kids | Yes. |
| Good to know | Snow arrives early. |
Fishing by season
Winter
Ice fishing.
Spring
Ice-off.
Summer
Chironomids.
Fall
Late-season rainbows.
How to get there
From Roseburg, take State Route 138 east to Diamond Lake.