🎣 Ashton ID — Henry's Fork
Live river conditions & weather
--°F
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↓ Reservoir Inflow · HFF estimate
—cfs--°F
Computed by HFF — not a gauge reading. Henry's Fork above Ashton Reservoir, nr the Marysville bridge · HFF live chart ↗ · 📍 map ↗
7-Day Weather
Source: Open-Meteo · Ashton, ID (44.07°N, -111.45°W)
Wind & Temp
Hourly forecast · next 5 days
Wind Detail
Direction · speed · gusts · 3-hour intervals · next 7 days (mph)
Radar
Source: Windy.com · Ashton, ID
Above & Below Ashton Reservoir
Two readings that bracket the reservoir — one measured, one modelled. Below-dam is a real gauge: USGS 13046000. Above-reservoir is HFF's computed "Ashton Reservoir inflow" — the USGS gauge that sat at that spot (13045796, Henrys Fork ab Ashton Res) is discontinued and reports no real-time data, so HFF derives the value and publishes it only as a chart image. Treat the inflow as a good estimate, not an instrument reading.
↓ ABOVE RESERVOIR · ASHTON BRIDGE
Ashton Reservoir Inflow
Henry's Fork above Ashton Reservoir, nr the Marysville bridge
HFF computed estimate · no live USGS gauge here (13045796 discontinued) · temp from HFF Marysville sensor
Inflow
—
cfs · HFF estimate
Water Temp
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°F · HFF Marysville
↑ BELOW DAM
Henrys Fork — Outflow Side
Canyon ~4 mi west of Ashton town · 44.070°N, -111.511°W · regulated dam release
USGS 13046000
Discharge
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cfs
Water Temp
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°F · HFF Ashton Dam
River Gauges
Source: USGS Water Services · last reading + 7-day trend
Fall River · Rain Response forecast
How much will rain raise Fall River? Empirical model from 11 yr of daily flow + basin rainfall (Aug–Oct baseflow season).
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Water Temperatures
Source: Henry's Fork Foundation sensor network · Trout: cold <50°F · optimal 50–65°F · stress 65–70°F · lethal >70°F
Sunrise · Sunset · Moon
Daylight times for Ashton
Hatch Chart
What's hatching on Henry's Fork now & soon · matching flies · optimal water temps are guide-consensus (±a few °F), with stations currently in range
More Data
Henry's Fork Foundation dashboards & partner sources