Johnson Creek At Milwaukie flow report
As of July 12, 2026, Johnson Creek At Milwaukie is flowing at 17 cfs with a gage height of 23.73 ft, receding 6% over the past 24 hours. Source: USGS gauge #14211550, refreshed throughout the day.
Historical Data
Johnson Creek At Milwaukie at a glance
How Johnson Creek At Milwaukie is running right now, where it sits on the map, and the key gauge stats.
Johnson Creek At Milwaukie is flowing at 17 cfs, with the water sitting 23.73 ft at the gage. Flow is down 6% since yesterday as the gauge recedes.
This is USGS gauge #14211550 in Oregon. Over the past 10 days the average has been 19 cfs, peaking at 20 cfs.
Over the next 5 days, Johnson Creek At Milwaukie is expected to recede from today's 17 cfs, toward roughly 15 cfs by 2026-07-17 (likely range 11-21 cfs) -- running well below the seasonal normal.
For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the Oregon flow report.
Streamflow Forecast
Powered by PULSE — Snoflo’s Predictive Unified Learning & Simulation Engine, which learns from how this river has answered every past storm, snowmelt, and dry spell to forecast where it’s headed with a precision generic models can’t match.
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.
Johnson Creek At Milwaukie
The creek has several tributaries, including Crystal Springs Creek, which flows through a park with several artesian springs. The watershed has several dams, including the Oak Grove Dam, which provides flood control and recreation opportunities. Seasonal trends show that Johnson Creek experiences the highest flows in winter and spring due to rain and snowmelt. In summer, flows decrease and water temperatures increase, which can stress aquatic life. An interesting fact about the hydrology is that the Johnson Creek watershed is home to many species of fish, including coho salmon and steelhead trout, which rely on healthy stream habitats for their survival.
Nearby streamflow levels
Cross-check Johnson Creek At Milwaukie's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Johnson Creek At Milwaukie | 17 cfs |
| Tryon Creek Blw Nettle Creek | 5 cfs |
| Willamette River At Portland | 9,130 cfs |
| Fanno Creek At 56th Ave | 0 cfs |
| Clackamas River Near Oregon City | 828 cfs |
| Fanno Creek At Durham | 3 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near Johnson Creek At Milwaukie. 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 |
|---|---|
| Hillsboro Airport Asos & Lawrs | 0 in |
| Headworks Portland Water Bureau | 0 in |
| Nohrsc South Fork Bull Run | — |
| South Fork Bull Run | 0 in |
| Nohrsc North Fork | 1 in |
| Seine Creek | 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 Johnson Creek At Milwaukie in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Johnson Creek At Milwaukie crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Johnson Creek At Milwaukie
Where does the streamflow data for Johnson Creek At Milwaukie come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 14211550. 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 Johnson Creek At Milwaukie 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 Johnson Creek At Milwaukie report
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