Umpqua NF / Diamond Lake

**Umpqua NF / Diamond Lake – Tier A Analysis** You're sitting on a rare late-summer sweet spot: soil temp is perfect at 61°F, the moisture trigger is live across all seven days, and six species are simultaneously viable—king bolete, lobster, cauliflower, oyster, banded mottlegill, and yellow-gilled gym. This convergence is textbook late-season abundance, driven by sustained subsurface moisture despite zero rainfall. The hard constraint is desiccation risk: zero precipitation in two weeks means the window is narrow before capillary moisture depletes and exposed fruiting bodies crisp. Expect kings and lobsters to fruit first and hardest given their competitive advantage in these conditions; cauliflower and oyster will follow. The mottlegills and gyms are your secondary targets if you're working elevation gradients. **Hot tip:** Hunt north-facing slopes and draw-bottoms at 5,000–6,500 ft where seepage persists longest—your actual window is 3–5 days before the drying trend locks you out.

Generated by Claude (Anthropic) from the structured weather, soil, and phenology data on this page. The LLM can misread edge cases — treat this as a starting hypothesis, not a guarantee. Always verify conditions on the ground before committing to a long drive.