Waterlands
River Intelligence · Entomology

Read the Water. Match the Hatch.

Every river has an entomological fingerprint — the bugs it grows, when they hatch, and how trout eat them. Learn the bugs, cross-reference live flows, and fill your box before you go.

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Mayfly

Mahogany Dun

Paraleptophlebia bicornuta

Fall’s gentleman hatch. Sparse but dependable mahogany-brown duns bring quality fish to soft water on quiet October afternoons.

Order
Mayfly
Family
Leptophlebiidae
Genus
Paraleptophlebia
Hook
#12-14
Season · Peak Sep-Oct
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
Mahogany Dun
Emergence Triggers
Water Temp
48–56°F
Flow
Autumn base flows
Light
Warm, still afternoons
Water Type
Soft edges, slow side-channels
Lifecycle
How Trout Eat It — Stage by Stage
1
Nymph
Sep-Oct

Nymphs crawl toward slow margins pre-hatch — fish shallow, soft water.

Match It
Pheasant Tail#14-16
$2.75
2
Emerger
Hatch onset

Slow-water emergence means long inspections. Fine tippet, long leads.

Match It
Mahogany Emerger#14-16
$3.15
3
Dun
1-4pm

Duns drift long distances on slow seams — classic autumn dry-fly fishing.

Match It
Parachute Mahogany#12-14
$3.25
Cross-Reference
Where This Bug Matters
≋ Waterlands · Hatch data blends USGS gauges, NOAA temps & regional emergence records
USGS Real-time Data · Free to Start · No Credit Card