Daily River Forecast

South Platte River

Deckers, Colorado

South Platte River | Deckers, Colorado | Updated September 13, 2026 | Station: South Platte River below Brush Creek near Trumbull, CO

  • Use a long, delicate leader with precise micro-split shot spacing to maintain a dead drift in clear tailwater currents.
  • Use Technical Nymphing.
  • Favor Sparse, natural coloration, unweighted or lightly weighted.
What's active
Fish this
Midges, size 20-24, Morning (6:00 AM–10:00 AM)
Zebra Midge, size 20-24, dry; Top Secret Midge, size 20-24, dry; Juju Midge, size 20-24, dry
Tricos, size 20-22, Morning (6:00 AM–10:00 AM)
Trico Spinner, size 20-22, dry; Parachute Trico, size 20-22, dry; Trico Swisher Damiche, size 20-22, dry
Baetis, size 18-20, Morning (6:00 AM–10:00 AM)
RS2, size 18-20, dry; WD-40, size 18-20, dry; BWO Sparkle Dun, size 18-20, dry
Caddis, size 16-18, Variable
No matching fly supplied
Terrestrials, size 14-16, Variable
No matching fly supplied
Flow150 cfs and falling
Water TempUnavailable
WeatherClear
Rating7/10 · Good

Clear water and moderate late-summer flows on the South Platte require precise presentations, focusing heavily on subsurface midges and small mayflies.

The South Platte near Deckers is one of Colorado's best-known technical trout fisheries, close enough to Denver to see pressure but good enough to keep anglers coming back. Flows are shaped by reservoir management, which gives the river more predictability than a pure freestone stream.

Brown and rainbow trout dominate the fishery. Midges, BWOs, and small caddis patterns carry a lot of the spring workload, and presentation quality matters as much as pattern choice.