Why These Work
A fly earns its place before it earns your cast.
The recommendation engine does not start with a product. It starts with region, species, water temperature, food form, presentation, visibility, and proof. The output is a justified short list, with caveats shown where the data still needs tier corroboration.
294
Total flies
92
Verified
502
Waters
335
Official
Audit posture
Flies and waters with missing species profiles, regulation links, connected gauges, or guide corroboration stay visible as review work.
92
verified
22
supported
0
analog waters
0
water review
Live Decision Flow
Conditions become a ranked, defensible fly choice.
Pick a water scenario and the chart recomputes the strongest pattern, source signals, evidence score, and unresolved caveats.
Temp
56 F
Water
clear / normal
Species
Rainbow Trout
Stocking
Wild/self-sustaining
Active Proof
Region
Green River below Flaming Gorge
Parachute Adams is curated for this region.
The Math Behind The Feel
The model weights biology first, then presentation, then proof.
The system intentionally makes pattern name the final refinement. A fly has to satisfy species food fit, temperature, region, hatch or forage, and presentation before the Flybox earns confidence.
Species + Food Fit
17%Is this fly imitating something the target species actually eats here?
Water Temperature
15%Does current water temperature activate this food form or stress the fish?
Regional Locality
14%Does this pattern belong to this watershed, coast, or regional food web?
Season + Hatch
12%What is hatching, migrating, spawning, or falling into the water right now?
Water Ledger Fit
7%Does the specific water record support this season and fly family?
Presentation Style
11%Should this be dead-drifted, swung, stripped, skated, popped, or crawled?
Clarity + Contrast
9%Can fish find the fly without making it look unnatural?
Flow + Depth
7%Will this fly reach the fish and behave correctly in the current?
Time, Weather, Tide
5%Is the feeding window open right now?
Confidence + Caveats
2%How much of the answer is observed data versus inherited field wisdom?
Visual + Catalog Integrity
1%Does the product image and sourced fly actually match the named pattern?
Hatch Matching
A trout does not read SKU names.
35%
size
Most refusals start with the wrong hook size or body scale.
25%
silhouette/shape
Mayfly, caddis, stonefly, baitfish, crab, and terrestrial profiles are read quickly.
20%
behavior/presentation
Dead drift, swing, strip, skate, crawl, or pop must match the natural.
15%
color/contrast
Exact shade matters less than visibility, contrast, and natural tone.
5%
exact pattern
Pattern name is the final refinement, not the first decision.
Tier Corroboration Loop
Outreach should sharpen the model, not just validate it.
The audit has already identified where the Flybox is strong and where tier conversations should gather local water truth: species coverage, seasonal windows, color variants, exact tying notes, and product photography.
Review Every FlyThe Clouser Minnow
Gulf Coast & Emerald Coast
Missing species profile coverage: Jack Crevalle, Ladyfish, Spanish Mackerel, Flounder.
Lefty's Deceiver
Gulf Coast & Emerald Coast
Missing species profile coverage: Jack Crevalle, Spanish Mackerel, Ladyfish.
EP Crab
Gulf Coast & Emerald Coast
Missing species profile coverage: Sheepshead, Black Drum.
Gulf Shrimp
Gulf Coast & Emerald Coast
Missing species profile coverage: Sheepshead, Black Drum.
Evidence Ledger
The proof stack is visible by design.
Official condition APIs, hatch research, species profiles, field-standard fly selection, and visual pattern references all feed different parts of the decision.
USGS Instantaneous Values Service
U.S. Geological Survey
Live freshwater conditions, temperature conversion, and relative flow context.
USGS 3DHP all FeatureServer
U.S. Geological Survey
Official hydrography identity layer for each atlas water before species, hatch, or fly-style claims are strengthened.
ArcGIS REST Services Directory
ArcGIS Enterprise
Implementation reference for turning official ArcGIS FeatureServer layers into repeatable water-evidence adapters.
USGS Network Linked Data Index
U.S. Geological Survey
Match each fishing water to connected gauges and flowlines instead of relying only on nearest straight-line station distance.
U.S. Inland Creel and Angler Survey Catalog
U.S. Geological Survey
Backlog source for validating waterbody-specific target species, angler catch, and pressure assumptions.
State recreational fishing websites
NOAA Fisheries
Routes saltwater state adapters to current agency pages before strengthening species or season claims.
State fish and wildlife agency directory
Association of Fish & Wildlife Agencies
Keeps the 50-state atlas source plan pointed at agency-owned corroboration rather than search-result folklore.
Blue Ribbon Fisheries VIEW
Utah Division of Wildlife Resources
Seeds the Utah waters atlas with official waterbody coordinates beyond the Green River.
2026 Fish stocking information
Utah Division of Wildlife Resources
Corroborates species chips for stocked Utah waters while leaving wild species claims marked for guide validation.
Known coverage gap
The current local species profile file does not yet cover Arctic Char, Barracuda, Black Drum, Bonito, Channel Catfish, Chum Salmon, Dolly Varden, Flounder, and 17 more. These are now explicit research and tier-corroboration targets.