Built by guides — Written for anglers

Know what to tie on.
Before you wade in.

Every river has a tell. The bug it wants is the one it's been hinting at all morning — in the gauge, in the sky, in the cold of the water. We read the tell. You get the Fly Plan. Fly, rig, cast, seam. In under eight seconds. Across 308 rivers and 28 states.

No black box. Every call comes with the reason.
FLY PLAN · LIVE
South Platte · Cheesman Canyon
7:42 AM · MAY
51°F
Water
84%
Cloud
220
CFS
Baro
ACTIVE · TOP SPECIES
81ECS
Blue-Winged Olive
Baetis tricaudatus · Dun → Emerger
HIGH CONFIDENCE
PATTERN
Parachute BWO #18
olive/gray · dun
LEADER
12 ft · 5X nylon
+ 6X fluoro dropper at 22"
CAST
Reach cast · 40°
upstream mend on landing
PLACEMENT
Right-bank riffle seam
12-18" inside foam line
Sourced · 6.2s · v2.1.4
28
States covered
From the Rockies to the Smokies
308
Rivers we know
Tailwater · freestone · spring
<8s
From gauge to plan
Faster than your coffee cools
100%
Sourced. Always.
No black box. Not now. Not ever.
01
The problem

You've got
the flies.
The river's
been talking.

Every angler I've ever guided had the same problem. The box was fine. The rod was fine. But the decision — what bug, what tippet, what seam — was being made from paper hatch charts, three-day-old forum reports, and folklore. The water deserves better. So do you.

Paper hatch charts.
Tell you it's Green Drake season. Don't tell you the water's 47°F and the Drakes are still in the mud. Useful in a tackle shop. Useless on the water.
Forum reports.
Three days late. Filtered through somebody's ego. Half the time the guy's lying about which run he fished.
Guides at $500/day.
Worth every penny — for the trip you take once a year. Not for a Tuesday evening after work.
02
How it works

From the gauge
to your fly box.
Before your coffee's cold.

STEP 01

Tell us where you're going.

308 rivers across 28 states. Cheesman to Henry's Fork to the San Juan. If it's water worth fishing, it's in here. And each river is tuned to its own character — a tailwater isn't a freestone isn't an alpine lake.

STEP 02

We listen to the water.

USGS gauge data. NOAA weather. Landsat satellite thermal when the gauge is out. We read what the river's doing right now — not what it was doing last weekend. Every reading is stamped with where it came from.

STEP 03

You get the call.

Fly. Tippet. Cast. Where to put it. Why. The whole rig — the kind of answer a good guide gives you over the tailgate. And when the river and the calendar disagree, we don't fake it. We tell you the conflict and point you to what's actually working.

03
What you get

We don't hand you
a fly.
We hand you the rig.

Most apps tell you what fly. That's like telling you the truck's price without checking if the engine runs. Here's what actually matters.

Every call comes with the reasoning
PATTERNECS 81 · HIGH
The bug.

Parachute BWO #18. Olive-gray. Dun stage. ECS 81 — HIGH confidence. Why? Overcast sky. Falling baro. Fifty-one-degree water. Baetis weather, straight up. The hatch is on whether the guy upstream knows it or not.

LEADER & TIPPETDry-dropper
The string.

Twelve feet of leader. Nine-foot taper plus a three-foot extension. 5X nylon to the dry — fluoro sinks her, don't make that mistake. 6X fluoro dropper at twenty-two inches off a blood-knot tag. Nymph rides sixteen to eighteen inches down.

CASTING TECHNIQUEIntermediate
The throw.

Reach cast. Forty degrees upstream cross-stream from river-left. Single mend on landing. Follow mend at four seconds. If you can't reach cast yet, learn it this winter. It'll buy you ten fish a season.

FLY PLACEMENTRiffle seam
The spot.

Right-bank riffle seam. Downstream of that boulder cluster. Land the fly four feet above the seam — line in the fast water, fly on the slow side. Six to eight feet of clean drift. Five drifts, then move. The fish either ate or didn't. Stop drowning the seam.

04
The engine

The calendar says hatch.
The water says 47°F.

Every other app sees a date on a hatch chart and picks a fly. We see a forty-seven-degree creek and call it. The Drakes ain't coming. Here's what's actually working.

THE ECS

Entomology Confidence Score

Every bug, every river, every hour — scored zero to a hundred. Five inputs: the calendar, the water temperature, the weather, what other anglers are seeing, time of day. Below 45 and we don't waste your time on it. Above 75 and you get on the water.

THE FALLBACK

Hatch-gap advisory

When nothing's hatching, we don't make something up. We tell you why — too cold, wrong weather, water too warm for the season — and point you to attractors, dry-droppers, terrestrials. The honest answer. Same as a real guide gives you when the river's just not having it.

ECS · CONFLICT · CALENDAR vs TEMP
Drake window's open on paper. Water's forty-seven. They ain't coming today.
Switching you to BWO emergers and small midges. Confidence stays LOW until the river warms.
05
Coverage

28 states.
308 rivers.
All on watch.

Cheesman in February. Henry's Fork in late June. The Madison in salmonfly week. The San Juan when it's snowing in May. If it's worth fishing, we know its temper. And we're watching the gauge — every fifteen minutes, day and night. When the gauge is out, Landsat thermal picks up the slack.

COLORADO
  • South Platte · Cheesman
  • Fryingpan · below Ruedi
  • Arkansas · Browns Canyon
  • Gunnison · Black Canyon
  • Roaring Fork
  • Blue · below Dillon
MONTANA / WYOMING
  • Madison · Ennis
  • Yellowstone · Paradise Valley
  • Missouri · Craig
  • Bighorn · Thermopolis
  • Snake · Jackson Hole
  • Green · below Fontenelle
IDAHO / UTAH
  • Henry's Fork · Railroad Ranch
  • Silver Creek · Picabo
  • South Fork Snake
  • Green · A Section
  • Provo · below Deer Creek
  • Logan · Logan Canyon
NEW MEXICO / BEYOND
  • San Juan · Aztec
  • Hot Creek · Mammoth
  • Owens · Big Pine
  • Truckee
  • Rio Grande · Taos Box
  • Pecos · upper
+ 280 more rivers on watch
06
Pricing

Less than a
day of guiding.

Cost of one half-day guide trip gets you the whole season. No ads. No upsells. No selling your data to gear brands. Just the call you'd get from a good guide — every day, every river you fish.

PRO ANGLER
$99/year
Billed annually
  • Unlimited Fly Plans
  • All 308 waters
  • Conflict and hatch-gap advisories
  • Your fly history, your rivers
  • Fly box tracking
FOUNDING · LIMITED
FOUNDING MEMBER
$79/year · for life
First 1,000 anglers. Locked in for life.
  • Everything in Pro Angler
  • $79 a year. For life.
  • Direct line to us when the engine misses
  • First look at new rivers as we add them
  • Name on the wall when we launch
Doors open · Spring 2026

The water
doesn't wait.

Get on the list. We'll send you a sample plan for your home water — your gauge, your reach, your today — inside a day. When the doors open, you're in.

No data sales. No spam. Period.