South Arkansas River
South Arkansas River — Fishing Report for April 27, 2026
Quick Stats
Flow: 13 CFS | Trend: Rising | Fishability: Poor | Weather: Slight chance of snow showers, high 50°F
The Bite
April on the South Arkansas is a waiting game, and right now the creek is in the thick of its least fishable stretch — the ice-to-mud transition. At 13 CFS and ticking upward, snowmelt off Monarch Pass is just beginning to push through the system. Water temps aren't available from this gauge, but given overnight lows in the low 30s and daytime highs barely cracking 50°F, expect readings in the upper 30s at best — below the range where trout feed with any real intent.
The basin context makes this year's transition worth watching, though. With snowpack sitting at just 11% of normal and water-year precipitation at 62% of normal, runoff will likely be shorter and milder than a typical April-May cycle. That means the South Arkansas could clear and drop into a fishable window earlier than usual — potentially by mid-May rather than late May. Keep an eye on the gauge trend over the next few weeks.
For now, the honest call is to redirect your energy. The main Arkansas near Salida is fishing well in pre-runoff conditions, with BWOs and early caddis providing surface action on warmer afternoons. That's where your time is better spent this week.
What to Fish
- RS2, #20-22 — dead-ringer for early-season midge and BWO emergers; keep it in your box for when this creek opens up
- Zebra Midge, #20-22 — reliable subsurface producer in cold, clear freestone water
- Pheasant Tail Nymph, #16-18 — versatile early-season nymph once flows stabilize
- Parachute Adams, #16-18 — dry-fly option for afternoon surface activity when temps climb
- Elk Hair Caddis, #14-16 — worth having ready as water warms into May
Tactics & Rigging
When the South Arkansas does come into shape — likely a few weeks out given the light snow year — think small and subtle. A single nymph on 5X or 6X fluorocarbon, tight-lined through the deeper pockets and undercut banks, will be the most consistent approach in the low, clear flows this lean snowpack year will produce. If you see surface activity in the afternoon warmth, a size 18 Parachute Adams with a size 22 RS2 dropped 14–16 inches below on 6X makes a clean dry-dropper that covers both lanes without overcomplicating the rig.
The Middle Fork above Boss Lake is artificial flies and lures only with mandatory catch-and-release for all trout — verify current regulations with CPW before fishing, as rules on the main stem may differ.
Access & Logistics
Access is straightforward when conditions allow, but there's no reason to make the drive this week. Snow showers are possible through Monday night, and the creek will remain off-color as melt continues. Check back as overnight lows moderate and the gauge stabilizes.
Stop by ArkAnglers or Salida Anglers for flies, local intel, and to support the shops that keep these fisheries healthy.
Looking Ahead
Tuesday brings sunshine and clearing skies, which will accelerate snowmelt briefly before temperatures moderate mid-week. With such a thin snowpack in the basin, the runoff pulse should be relatively short — watch for the South Arkansas to drop and clear faster than normal, potentially opening a fishable window in the second half of May.