US Fly Fishing
Where the data
meets the drift.
Live USGS stream conditions, an AI hatch advisor loaded with real gauge data, and beginner-friendly guides — all in one place.
Live Conditions
Updated every 15 min
Where we’re flowing
Pick your region
Mountain West
CO · WY · ID · MT · NM · UT · AZ · NV · SD
The Rocky Mountain heartland and the Black Hills cold-water island — the Front Range tailwaters, Wyoming's Snake and Green, Idaho's Henry's Fork and South Fork, Montana's blue-ribbon classics, New Mexico's San Juan, Utah's Green below Flaming Gorge, Arizona's Mogollon Rim freestones, Nevada's Ruby Mountains, and the limestone canyons of South Dakota's Black Hills (Spearfish Canyon, the Pactola tailwater on Rapid Creek).
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West Coast
OR · WA · CA
Wild redsides, legendary salmonfly hatches, and iconic steelhead rivers across the Pacific slope — the Deschutes, McKenzie, North Umpqua, Rogue, and the spring-creek wonders of the Klamath Basin in Oregon and Washington; plus California's spring creeks, tailwaters, and wild Sierra trout from Shasta to the Eastern Sierra — Hat Creek, Fall River, the McCloud, the Trinity steelhead tailwater, Hot Creek, the Owens, and California's protected Golden Trout.
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Driftless
IA · WI · MN
The unglaciated limestone-spring-creek coulee country of the Upper Midwest — wild brown trout in Iowa's Bear Creek (the state's #1 rated stream), Bloody Run, the Upper Iowa, Yellow, Volga, and Turkey; the celebrated Wisconsin Driftless streams of Vernon and Crawford counties (Timber Coulee, the West Fork Kickapoo, Black Earth Creek); and the wild brown and brook trout of southeast Minnesota's bluff country (the Whitewater, Root, and Trout Run).
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Great Lakes
MI · OH
Legendary trout streams from the Holy Water to the Upper Peninsula and Ohio's Steelhead Alley — the Au Sable Hex hatch, the Pere Marquette steelhead, Hemingway's Fox, and the North Shore tributaries flowing to Lake Superior, plus the Lake Erie steelhead runs of the Rocky, Chagrin, Grand, and Conneaut on Ohio's southern Lake Erie shore.
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Appalachians
VA · NC · TN · WV · KY · GA
The southern Appalachian highlands — Virginia's Mossy Creek and the Smith tailwater, North Carolina's Davidson and Nantahala, Tennessee's South Holston and Clinch tailwaters, West Virginia's Elk and Cranberry, Kentucky's Cumberland tailwater, and North Georgia's mountain trout country (the Chattahoochee headwaters at Helen, the Wild & Scenic Chattooga, the spring-fed Soque, and the trophy TVA-regulated Toccoa tailwater below Blue Ridge Dam).
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Northeast
NY · PA · VT · ME · NH · MA · CT · MD · NJ
Where American fly fishing began — the Beaverkill, Delaware tailwaters, Pennsylvania limestone spring creeks, Vermont's gin-clear Battenkill, the wild brook trout of Maine's North Woods, the White Mountains tailwaters of New Hampshire, the Deerfield and Swift in Massachusetts, the Farmington and Housatonic in Connecticut, the Gunpowder and Savage in Maryland, and the Ken Lockwood Gorge in New Jersey.
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South
TX · AL · OK · AR · MO
The southern warmwater and Ozark cold-water country — Texas Hill Country spring creeks (Llano, Blanco, Pedernales, Frio) plus the Guadalupe trout tailwater below Canyon Lake; Alabama and Oklahoma's southern fisheries; the Bull Shoals and Norfork tailwaters of Arkansas (trophy browns and rainbows); the Greers Ferry tailwater that produced the world-record 40-pound brown; and Missouri's Ozark National Scenic Riverways (the Current and Jacks Fork) plus the Wild and Scenic Eleven Point and the world-class North Fork of the White.
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Alaska
AK
The Last Frontier — the Kenai's emerald-green water and 30-inch wild rainbows, the world-famous fly-only Russian River sockeye fishery, the largest wild steelhead run in Alaska on the Situk near Yakutat, Arctic grayling on the Wild and Scenic Gulkana, southerly road-accessible steelhead on the Anchor, and the trophy Bristol Bay rainbows of the Naknek. ⚠️ 2026 Kenai king salmon are under FULL ADF&G emergency closure — verify regulations at adfg.alaska.gov before any trip.
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Iconic water
Featured rivers
Start here
Learn the fundamentals
How to Read a USGS Stream Gauge
CFS, gauge height, and why that number on your phone decides your day.
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How to Read a River
Pools, riffles, runs, and seams — where trout hold and why.
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How to Pick the Right Fly
A practical system for choosing between nymphs, dries, and streamers.
Read guide →
Why this site
Built for anglers who want the data
Live Stream Data
Real-time CFS, gauge height, and water temperature from USGS sensors on every river. Know before you go.
Updated every 15 minutes
AI Hatch Advisor
Ask what to throw and get a specific answer — fly pattern, hook size, and timing — based on today's actual conditions.
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Built for Beginners
No gatekeeping. No bro energy. Clear explanations of what the data means and what to do with it.
Rivers in 38 states
🟢 Fishing Well Today
South Platte River
Colorado's most popular trout river. Technical dry fly water at Deckers, diverse sections from Eleven Mile Canyon to Cheesman Canyon.
Know what's hatching
Hatch Calendar
Month-by-month hatch charts for top trout rivers. Blue-Winged Olives, PMDs, Caddis, Green Drakes — with matching fly patterns and hook sizes.
View Hatch Calendar →