Duwamish River At Golf Course At Tukwila flow report
As of July 16, 2026, Duwamish River At Golf Course At Tukwila is flowing at 747 cfs with a gage height of 6.24 ft, rising 77% over the past 24 hours. Source: USGS gauge #12113390, refreshed throughout the day.
Historical Data
Duwamish River At Golf Course At Tukwila at a glance
How Duwamish River At Golf Course At Tukwila is running right now, where it sits on the map, and the key gauge stats.
Duwamish River At Golf Course At Tukwila is flowing at 747 cfs, with the water sitting 6.24 ft at the gage. Flow is up 77% since yesterday — a rising hydrograph.
This is USGS gauge #12113390 in Washington. Over the past 10 days the average has been 679 cfs, peaking at 1,050 cfs.
For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the Washington flow report.
Engineering Data
Flow-duration statistics and observed peak-flow context computed from this gauge’s complete daily record (USGS #12113390).
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, Duwamish River At Golf Course At Tukwila is expected to recede from today's 747 cfs, toward roughly 589 cfs by 2026-07-20 (likely range 214-1619 cfs) -- drier than normal for the date.
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.
Duwamish River At Golf Course At Tukwila
The river is also impacted by the Tukwila Dam, which can affect water levels and flow. Seasonal trends include higher flows in the winter and lower flows in the summer, due to precipitation patterns. Additionally, the hydrology of the Duwamish River is affected by the urbanization of the surrounding area, which can cause flash flooding during heavy rain events. An interesting fact is that the river was once a major source of seafood for the Duwamish tribe, but is now considered one of the most polluted waterways in the United States.
Nearby streamflow levels
Cross-check Duwamish River At Golf Course At Tukwila's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Duwamish River At Golf Course At Tukwila | 747 cfs |
| Cedar River At Renton | 203 cfs |
| Mill Creek Near Mouth At Orillia | 1 cfs |
| Spring Brook Creek At Orillia | 2 cfs |
| Mill Creek At Earthworks Park At Kent | 1 cfs |
| Mercer Creek Near Bellevue | 12 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near Duwamish River At Golf Course At Tukwila. 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 |
|---|---|
| Kent | 0 in |
| Lynn Lake | 0 in |
| Lynn Lake | 0 in |
| Nohrsc Cougar Mountain | 0 in |
| Cougar Mountain | 0 in |
| Nohrsc Rex River | 0 in |
Plan a trip
Reservoirs, boat launches, river runs, and fishing spots within driving distance of Duwamish River At Golf Course At Tukwila.
Nearby reservoirs
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Boat launches
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River runs
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Nearby fishing
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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 Duwamish River At Golf Course At Tukwila in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Duwamish River At Golf Course At Tukwila crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Duwamish River At Golf Course At Tukwila
Where does the streamflow data for Duwamish River At Golf Course At Tukwila come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 12113390. 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 Duwamish River At Golf Course At Tukwila 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 Duwamish River At Golf Course At Tukwila report
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