Natrona County
North Platte River — Grey Reef
Live Conditions
North Platte River — Grey Reef — Grey Reef (Tailwater)
7-Day Flow
→ Stable
24-Hr Pressure
24.12 inHg · → High/stable
Voluntary Catch-and-Release Advisory
Water temperature is at or above 65°F. At these temperatures trout are physiologically stressed and have a higher post-release mortality rate. Consider waiting for cooler conditions — early morning or evening — or choosing a tailwater with regulated temperatures.
Local Weather
Tough conditions — fish deep
Today
🌤️Mainly clear
100° / 66°
Tomorrow
🌤️Mainly clear
83° / 56°
Tue
☀️Clear sky
76° / 47°
Wed
☀️Clear sky
88° / 53°
Cold front incoming — go deep with nymphs, surface activity likely slow.
Weather by Open-Meteo · No API key · Updated every 30 min
What should I fish today?
⚡ AIAI-powered recommendation using today's live flow, temperature, and hatch data.
2
Time of Day
Using: 272 CFS · 66.4°F · PMDs continue
What should I pack?
Rod, flies, tippet, and safety gear specific to today's North Platte River — Grey Reef conditions.
🪰 Hatch Calendar
North Platte River — Grey Reef · August · Late Summer
🟢 Active now at 66.4°F water
🟡 Approaching — within 5°F of trigger range
Select month
PMDs continue (size 16-18). Caddis evenings. Tricos morning. Hoppers (size 8-12) along banks. The Reef fishes well all summer thanks to cold tailwater releases.
🟢 Active · 🟡 Approaching · ⚪ Seasonal only
River Map
About North Platte River — Grey Reef
World-class tailwater below Grey Reef Reservoir, one of Wyoming's top trophy fisheries. Consistent midge and streamer fishing year-round.
Regulations
Catch-and-release only on the Gold Medal section below Grey Reef Dam; artificial lures only in designated stretches. Wyoming Game & Fish license required. Verify current regs at wgfd.wyo.gov before fishing.
Learn More
Guides to help you fish North Platte River — Grey Reef with more confidence.
Trout Species of Wyoming — A Fly Angler's Field Guide
Wyoming holds native Cutthroat subspecies found nowhere else on Earth. How to identify Snake River Finespotted, Yellowstone, and Colorado River…
Wyoming Fishing Regulations for Fly Anglers
Licenses, the Conservation Stamp, year-round seasons, no trout stamp, and the river-specific rules that matter on the Grey Reef, Snake, and Bighorn.
How Barometric Pressure Affects Fishing (And How to Use It)
That gorgeous bluebird day after a cold front? Worst fishing of the year. Here's the data behind why pressure changes matter more than the weather…