Willamette River At Harrisburg flow report
As of July 15, 2026, Willamette River At Harrisburg is flowing at 3,770 cfs with a gage height of 1.62 ft, holding steady over the past 24 hours. Source: USGS gauge #14166000, refreshed throughout the day.
Historical Data
Willamette River At Harrisburg at a glance
How Willamette River At Harrisburg is running right now, where it sits on the map, and the key gauge stats.
Willamette River At Harrisburg is flowing at 3,770 cfs, with the water sitting 1.62 ft at the gage. Flow has held roughly steady over the past 24 hours.
This is USGS gauge #14166000 in Oregon. Over the past 10 days the average has been 3,857 cfs, peaking at 3,930 cfs.
For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the Oregon flow report.
Engineering Data
Flow-duration statistics and observed peak-flow context computed from this gauge’s complete daily record (USGS #14166000).
Percentiles are flow-duration values computed from this gauge’s observed daily record as archived by Snoflo. Return periods are Weibull plotting-position estimates from observed annual maxima, provided as general reference context only. Always verify against official USGS NWIS records. Part of Snoflo for Engineering.
Streamflow Forecast
Over the next 5 days, Willamette River At Harrisburg is expected to hold near today's 3770 cfs, toward roughly 3623 cfs by 2026-07-20 (likely range 3113-4215 cfs) -- running well below the seasonal normal.
Powered by PULSE — Snoflo’s forecast engine, trained on this gauge’s full record of storms, snowmelt, and dry spells.
| Date | Expected (p50) | Likely range (p25–p75) | vs normal | Projected stage |
|---|
How does this compare to past years?
Year-over-year overlay, annual peak discharge, the full distribution of daily flows on record, and the gauge's rating curve.
Weather Forecast
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day forecast
Daily temperatures, snow, and rain projected over the next two weeks.
Willamette River At Harrisburg
The river is fed by several tributaries, including the McKenzie River, the Santiam River, and the Calapooia River. Dams along the river, such as the Foster Dam and the Dexter Dam, can affect the flow of the river. Seasonal trends show that the river experiences higher flow during the winter and spring months and lower flow during the summer and fall months. Interesting facts about the hydrology of the Willamette River include the presence of several species of fish, including Chinook salmon and steelhead trout, and the river's historical significance as a transportation route for early settlers.
Nearby streamflow levels
Cross-check Willamette River At Harrisburg's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Willamette River At Harrisburg | 3,770 cfs |
| Long Tom River At Monroe | 47 cfs |
| Long Tom River Near Alvadore | 52 cfs |
| Mckenzie River Near Coburg | 1,950 cfs |
| Mohawk River Near Springfield | 36 cfs |
| Mckenzie River Abv Hayden Br | 1,770 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near Willamette River At Harrisburg. Spring snowmelt is the dominant driver of streamflow in mountain basins -- a deep snowpack upstream means more runoff later in the season.
| SNOTEL station | Snowpack |
|---|---|
| Eugene-Mahlon Sweet Field | 0 in |
| Corvallis Municipal Airport | 0 in |
| Foster Dam | 0 in |
| Cottage Grove 2e | 0 in |
River levels & flood safety
- Read the level before you go
- A river that's runnable at one flow can be deadly at another. Check current discharge and gage height — like the values shown above — against the flood-stage thresholds, and remember levels can spike fast after rain or a dam release.
- Respect cold water
- Snowmelt rivers run cold even in summer. Sudden immersion triggers cold-water shock and saps strength within minutes. Wear a PFD, dress for the water temperature (not the air), and never wade or paddle alone.
- Watch for swiftwater hazards
- Strainers (downed trees), undercut rocks, and low-head dams are the deadliest features on moving water. High, fast, muddy water hides them. If in doubt, scout from shore and portage.
- Mind flash floods & releases
- Narrow canyons can flood from a storm miles upstream, and dam-controlled reaches can rise without warning. Know the forecast, the release schedule, and your exit before you launch.
Track Willamette River At Harrisburg in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Willamette River At Harrisburg crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Willamette River At Harrisburg
Where does the streamflow data for Willamette River At Harrisburg come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 14166000. Snoflo refreshes the time series throughout the day. Forecasts come from the NOAA / yr.no feed Snoflo's iOS app uses.
How often is the report updated?
USGS gauges report continuously (typically every 15 minutes). Snoflo pulls fresh values throughout the day — look for the "as of" timestamp on the streamflow hero card.
What's the difference between discharge and gage height?
Discharge (cubic feet per second, or cfs) is the volume of water flowing past the gauge each second. Gage height is how high the water sits at the gauge (feet). They're related by a rating curve specific to each gauge — higher water means more flow, but the exact ratio depends on channel shape.
How is "percent of median" calculated?
Today's discharge is compared to the historical median discharge on this calendar day across the gauge's full record. 100% = right on median; 200% = a very high year; 30% = a drought-level low.
What are flood stages, and is this river safe right now?
Flood stages are NWS-defined gage-height thresholds — Action, Minor, Moderate, Major — marking when nearby roads or floodplains start to be affected. "Safe" depends on your activity and skill: a level that's a fun paddle for an expert can be lethal for a wader. Always check the current level against the thresholds above and the safety links, and when in doubt, stay off the water.
Can I get alerts when Willamette River At Harrisburg rises?
Yes — flow alerts are managed in the Snoflo iOS app. Favorite this gauge, set a streamflow threshold (e.g. "alert me when discharge crosses 5,000 cfs"), and you'll get a push the moment USGS reports the crossing.
Access the free Willamette River At Harrisburg report
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