Fly Fishing North Platte River - Above Seminoe

Overview

Above Seminoe Reservoir, the North Platte flows through sagebrush plains north of Sinclair. This freestone reach has undercut banks, riffles and deeper runs in a rugged, open landscape, with red rock outcrops and views toward the Ferris Mountains. Brown and rainbow trout are part of the fishing here.

Spring snowmelt changes the river’s level and clarity. As the water recedes, look for feeding lanes beside bankside grass and in the runs below riffles. A quieter seam may call for a different drift or nymph depth from the main current beside it.

Terrestrials beside the banks

Terrestrial fishing is an option along this arid country’s bankside grasslands. When grasshoppers are active, drift a hopper or ant pattern beside an undercut bank and watch how the fly moves through that lane. A short, controlled presentation close to cover can be more useful than casting across several conflicting currents.

Deeper runs and autumn streamers

Stonefly and mayfly nymphs give you options for the deeper runs below riffles. Adjust depth and weight as you move between water types instead of assuming the same setup reaches every feeding lane.

Streamers offer another presentation along cover, particularly on overcast autumn days. Work a pool edge or cutbank deliberately, changing the retrieve and casting angle as you learn how the current carries the fly. Let the water and observed activity guide the choice rather than treating the season as a promise of easy fishing.