FISHABLE
Low, clear winter flows—16 CFS near Aspen, ~300 CFS at Glenwood Springs. Water temps in the low-to-mid 30s°F. Technical fishing but productive midday.Roaring Fork River
Current Hatch Activity
Midges are the primary game—look for clusters in slow eddies and tailouts from late morning through early afternoon. Baetis (BWOs) may appear on overcast or warmer afternoons. Egg patterns producing well, especially in the lower river near Glenwood Springs. Water temps in the low 30s°F keep hatches brief and concentrated midday.
FISHABLE
Euro nymph rig: tungsten Jig Midge #20 + RS2 #22 under a tight line. Or dead-drift egg pattern with a Black Beauty Midge #20 dropper.
Quick Reference
150-700 CFS ideal for wade fishing. 700-2,500 CFS for drift boats. Lower section (Basalt to Glenwood) handles higher flows.
45-62°F optimal. Upper sections near Aspen stay cool. Lower sections can warm in summer afternoons.
Gold Medal water near Basalt. Freestone character with spring runoff May-June. Summer and fall flows typically stabilize around 200-400 CFS in upper sections.
Generally excellent clarity outside of runoff. The Fryingpan River confluence at Basalt adds cold, clear water that improves conditions downstream.
What "Fishable" Means Here
Fishable when flows allow effective presentation—typically under 1,500 CFS for wade fishing, up to 2,500 CFS for floating. Gold Medal designation near Basalt reflects quality fish populations.
Seasonal Patterns
spring
March through May offers good pre-runoff fishing. BWOs and early stoneflies bring fish up. Runoff typically blows things out mid-May through mid-June.
summer
Post-runoff (late June) kicks off prime season. Caddis, PMDs, and terrestrials dominate. The Fryingpan confluence keeps lower sections productive even on hot days.
fall
September through November is excellent. Browns get aggressive, streamers produce, and BWOs provide consistent hatches. Less crowded than summer.
winter
Low, clear flows make for technical fishing. Focus on slower water in the Basalt area. Midges and small nymphs produce. Less pressure, quality fish.
Alerts
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