Observed arrival · 2026-10-15
FloatETA estimates river-float times
A Montana and Idaho river-float calculator estimates trip duration from gauge flow, craft, and launch timing, with a form for reporting hazards.
○Open
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$Paid
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✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Montana and Idaho river floaters
- Worth noticing
- Hazard reports automatically retire after 45 days unless another visitor confirms the hazard is still there.
Field notes
The calculator asks for a state, river, craft, and optional put-in time; a fishing stop can add 35 minutes per mile. Its stated method starts from USGS instantaneous discharge, scales reference drift speed by v ∝ Q^0.34, and applies craft adjustments; it also calculates sunset at the put-in. Hazard reports cover strainers, diversion dams, fences, cables, and debris, and expire after 45 days unless a visitor confirms they remain.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
†AdsAdvertising visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
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