Grande Ronde River at Troy, OR

Eastern Oregon · USGS gauge 13333000 · Updated Oct 24, 3:19 AM PDT · USGS data, provisional

Fishable/Floatable686 cfs● steady (+8% in 24 h)

Reading time: Oct 24, 3:00 AM PDT · Provisional data

Flow is in a typical range for the date. Rivers are generally easiest to fish and float when they are near their normal flow, but this status says nothing about water clarity, hatches, hazards such as wood in the river, or dam releases.

Vs. normal for this date
23rd percentile
Typical range (25th–75th)
700–950 cfs
Median for this date
814 cfs
7-day low / high
568 / 702 cfs

Plain-language explanation

Grande Ronde River at Troy is flowing at 686 cubic feet per second (cfs) as of Oct 24, 3:00 AM PDT. That is on the low side for this time of year: lower than about 77% of the daily flows this gauge has recorded for this date (give or take 7 days) over 83 years of record (1944–2026).

The middle half of those historical flows runs from 700 to 950 cfs, with a median of 814 cfs; the lowest 10% of days are at or below 602 cfs and the highest 10% at or above 1,185 cfs.

Over the last 24 hours the flow has been steady (+7.7%). In the last 7 days it ranged from 568 to 702 cfs.

Why this status: Flow is within the range this gauge normally sees at this time of year (or the deviation is too small in absolute terms to matter).

7-day trend

typical range for this date (25th-75th pct)548591635679722Sun 10/18Mon 10/19Tue 10/20Wed 10/21Thu 10/22Fri 10/23Sat 10/24

Hourly flow in cfs, Pacific time. The shaded band is the typical range (25th–75th percentile) for this date, shown when it falls within the chart.

Day (Pacific)Mean cfsPercentileStatus that day
Sun Oct 1859111thFishable/Floatable
Mon Oct 195889thToo low
Tue Oct 205889thToo low
Wed Oct 215848thToo low
Thu Oct 225868thToo low
Fri Oct 2366821stFishable/Floatable
Sat Oct 24 (so far)68723rdFishable/Floatable

Seasonal context

1002005001,0002,0005,00010,00020,00050,000100,000JanFebMarAprMayJunJulAugSepOctNovDec

Shaded band: 10th–90th percentile of daily flows through the year; dashed line: median. Log scale. Dot: today's flow. Based on 83 years of USGS daily data (1944–2026).

Placeholder · Sponsor placementThis slot is empty. Reserved for a clearly labelled sponsor.
Placeholder · Guide / shop listingThis slot is empty. Reserved for a local guide, outfitter or fly shop listing.

About this gauge

USGS site
USGS-13333000
USGS name
Grande Ronde River At Troy, Or
Drainage area
3,275 sq mi
Location
45.9457, -117.4510
Record in this analysis
1944–2026

Typical uses

steelheadrafting

Notes: Largely free-flowing in this stretch; levels follow snowmelt and rain. (Hand-written general note, not from USGS data.)

Data from the U.S. Geological Survey (USGS). Readings are provisional and subject to revision. Flowcast statuses are automated comparisons with each gauge's own history, not safety ratings or fishing reports. Check local conditions, weather, regulations and closures before you go. Rivers can change quickly.

More Eastern Oregon rivers

John Day River at McDonald Ferry