north-platte-river

North Platte River is a river in Wyoming.

It ranks #1 among the 11 waters of Wyoming in the registry, and is of national prominence.

Also called North Platte River in Wyoming.

Fished for trout (inferred from the species listed).

Species: rainbow trout, brown trout and cutthroat trout.

USGS GNIS record: 204647.

It shares a watercourse with North Platte River, Colorado.

Stretches: Gray Reef and Miracle Mile.

Access points: Lusby.

Gray Reef Dam (access). It is fishable and launchable. VV2: 'Immediately below the Gray Reef Dam is great access to the tailwaters'; start of the Gray Reef float. Also called Grey Reef Dam and Gray Reef afterbay dam.

It is on the stretch Gray Reef.

It is upstream of Lusby.

Engstrom (access). It is fishable and parking. WGFD: east-side parking area of the Miracle Mile Public Access Area. Also called Engstrom parking area.

It is on the stretch Miracle Mile.

Fremont Canyon (stretch). It is fishable and wade only. PRG: 'Fremont Canyon is a hidden gem in central Wyoming'; deep pools for stalking and wading. Single source; no place names inside it found.

Government Bridge (access). It is fishable and launchable. VV3: boat ramp several miles below Lusby.

It is on the stretch Gray Reef.

It is downstream of Lusby.

Guthridge (access). It is fishable and parking. WGFD: west-side parking area of the Miracle Mile Public Access Area. Also called Guthridge parking area.

It is on the stretch Miracle Mile.

Robertson Road (access). It is fishable and launchable. VC: one of the most developed access points, used by floaters and fishermen. Also called Robertson Road Public Access Area.

Speck/Bessemer Bend (access). It is fishable and launchable. VC: ideal for fishing and floating. Also called Bessemer Bend and Speck.

Blue Gulch (access). It is fishable and wade only. VV2: one of the BLM access points below the dam (with the Redds and Pete's Draw).

It is on the stretch Gray Reef.

By the Way Ranch (access). It is fishable and wade only. VC: 2.5 miles of pedestrian fishing access. Also called By the Way Ranch Public Access Area.

Hartnett (access). It is fishable. VC: about 10 minutes southwest of Casper. Also called Hartnett Public Access Area.

Jessica's Pond (access). It is fishable. Also called Wyoming Fly Casters Memorial-Jessica's Pond Public Access Area.

Kortes Dam (feature). It is fishable. Upstream boundary of the Miracle Mile (VV1).

Mills Bridge (access). It is fishable. VC: in the city limits of Mills. Also called Mills Bridge Public Access Area.

Morad Park (access). It is fishable and launchable. VC: urban access in Casper with a boat ramp.

Paradise Valley (access). It is fishable. VC: shore fishing location. Name is shared with a Montana region (Yellowstone River); here a Casper-area access.

Pathfinder Ranches (access). It is fishable. VC: 1 mile of river on both banks. Also called Pathfinder Ranches Public Access Area.

Pathfinder Reservoir (feature). Downstream boundary of the Miracle Mile (VV1).

Pete's Draw (access). It is fishable and wade only. VV2: BLM access point below the dam.

It is on the stretch Gray Reef.

Schmitt (access). It is fishable and wade only. VC: pedestrian access only, about 0.5 mile of river. Also called Schmitt Public Access Area.

Sechrist (access). It is fishable. VC: popular site with a handicap-accessible fishing pier. Also called Sechrist Public Access Area.

The Redds (access). It is fishable and wade only. VV2: BLM access point below the dam.

It is on the stretch Gray Reef.

Float: Gray Reef Dam to Lusby, from Gray Reef Dam to Lusby, 8.4 miles.

Float: Lusby to Government Bridge, from Lusby to Government Bridge, 4.5 miles.

Sourced from 1 independent fly site.

Sources: blog.vailvalleyanglers.com, blog.vailvalleyanglers.com (2) (retrieved 2026-10-20), blog.vailvalleyanglers.com (3) (retrieved 2026-10-20), platteriverguides.com, visitcasper.com and wgfd.wyo.gov.

Hatches

Pink Lady (Epeorus)

Sourced.

  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul
  8. Aug hatching, peak
  9. Sep hatching, peak
  10. Oct
  11. Nov
  12. Dec

Peak: late August-September

Some fast-water areas only.

Sources: The Perfect Fly Store, The Perfect Fly Store, The Perfect Fly Store

Green Sedge

Stage: larva. Sourced.

  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May hatching
  6. Jun hatching
  7. Jul hatching
  8. Aug hatching
  9. Sep
  10. Oct
  11. Nov
  12. Dec

Depends on species; larvae (rock worms) work year-round.

Sources: The Perfect Fly Store, The Perfect Fly Store, The Perfect Fly Store

Pale Morning Dun

Sourced.

  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun hatching
  7. Jul hatching
  8. Aug hatching
  9. Sep
  10. Oct
  11. Nov
  12. Dec

Begins late June, usually before runoff finishes; the most consistent mayfly. A few green drakes and flavs appear in low numbers.

Sources: The Perfect Fly Store, The Perfect Fly Store, The Perfect Fly Store

Little Black Caddis (Mothers Day)

Sourced.

  1. Jan
  2. Feb
  3. Mar
  4. Apr hatching
  5. May hatching
  6. Jun
  7. Jul
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec

Starts in the lower section in late April.

Sources: The Perfect Fly Store, The Perfect Fly Store, The Perfect Fly Store

Salmonfly

Stage: adult. Sourced. Sources give different windows; this shows the range.

  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul hatching
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec

Reported windows differ: one shop says early July in fast water, moving up from the lower section, and warns that runoff can disrupt or miss it; another page says only late spring, once water is fishable.

Sources: The Perfect Fly Store, The Perfect Fly Store, The Perfect Fly Store, blog.vailvalleyanglers.com

Blue-Winged Olive

Sourced.

  1. Jan
  2. Feb
  3. Mar hatching
  4. Apr hatching
  5. May
  6. Jun
  7. Jul
  8. Aug
  9. Sep hatching
  10. Oct hatching
  11. Nov
  12. Dec

May start as early as March, with April the most consistent; fall hatch from late September through most of October. April BWOs (#18-20) give limited dry-fly chances on cloudy, windless days at Grey Reef.

Sources: The Perfect Fly Store, The Perfect Fly Store, The Perfect Fly Store, blog.vailvalleyanglers.com

Golden Stonefly

Sourced.

  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul hatching
  8. Aug hatching
  9. Sep
  10. Oct
  11. Nov
  12. Dec

Begins one to two weeks after the salmonfly hatch ends.

Sources: The Perfect Fly Store, The Perfect Fly Store, The Perfect Fly Store

Spotted Sedge

Sourced.

  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun hatching
  7. Jul hatching
  8. Aug hatching
  9. Sep hatching
  10. Oct
  11. Nov
  12. Dec

Starts late June or early July; different species hatch in succession through most of the summer.

Sources: The Perfect Fly Store, The Perfect Fly Store, The Perfect Fly Store

Little Yellow Stonefly

Sourced.

  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul hatching, peak
  8. Aug hatching, peak
  9. Sep
  10. Oct
  11. Nov
  12. Dec

Peak: late July-early August

Plentiful in some areas.

Sources: The Perfect Fly Store, The Perfect Fly Store, The Perfect Fly Store

Grasshoppers, ants, beetles

Stage: adult. Sourced.

  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul
  8. Aug hatching
  9. Sep hatching
  10. Oct
  11. Nov
  12. Dec

Grey Reef hopper season is the main dry-fly time.

Sources: The Perfect Fly Store, The Perfect Fly Store, The Perfect Fly Store, blog.vailvalleyanglers.com

Also named, timing not yet researched: Western March Brown, Winter stonefly (small black), Midge.

Access, closures and rules change; check with the state agency before you go.