Trinity River Above Nf Trinity River Near Helena flow report
As of July 14, 2026, Trinity River Above Nf Trinity River Near Helena is flowing at 463 cfs with a gage height of 9.19 ft, holding steady over the past 24 hours. Source: USGS gauge #11526400, refreshed throughout the day.
Historical Data
Trinity River Above Nf Trinity River Near Helena at a glance
How Trinity River Above Nf Trinity River Near Helena is running right now, where it sits on the map, and the key gauge stats.
Trinity River Above Nf Trinity River Near Helena is flowing at 463 cfs, with the water sitting 9.19 ft at the gage. Flow has held roughly steady over the past 24 hours.
This is USGS gauge #11526400 in California. Over the past 10 days the average has been 476 cfs, peaking at 491 cfs.
For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the California flow report.
Streamflow Forecast
Over the next 5 days, Trinity R Ab Nf Trinity R Nr Helena Ca is expected to hold near today's 463 cfs, toward roughly 459 cfs by 2026-07-19 (likely range 335-628 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.
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.
Trinity River Above Nf Trinity River Near Helena
The flow of the river is primarily determined by snowmelt and rainfall, with peaks occurring in the spring and early summer. The river's flow is also influenced by several tributaries, including the South Fork Trinity River, which has its own streamgauge. The Trinity River is also home to several dams, including the Trinity Dam, which forms Trinity Lake, a popular recreation area. Interestingly, the Trinity River is known for its diverse fish population, including Chinook salmon and steelhead trout, which are important for both commercial and recreational fishing.
Nearby streamflow levels
Cross-check Trinity River Above Nf Trinity River Near Helena's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Trinity R Ab Nf Trinity R Nr Helena Ca | 463 cfs |
| Nf Trinity R A Helena Ca | 47 cfs |
| Trinity R A Junction City Ca | 499 cfs |
| Trinity R A Douglas City Ca | 502 cfs |
| Trinity R Bl Limekiln Gulch Nr Douglas City Ca | 464 cfs |
| Indian C Nr Douglas City Ca | 6 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near Trinity River Above Nf Trinity River Near Helena. 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 |
|---|---|
| Nohrsc Red Rock Mountain | — |
| Big Flat | 0 in |
| Bonanza King | — |
| Nohrsc Middle Boulder 3 Snow Course | — |
| Nohrsc Slate Creek | 1 in |
| Highlands Lakes | 19 in |
Plan a trip
Reservoirs, boat launches, river runs, and fishing spots within driving distance of Trinity River Above Nf Trinity River Near Helena.
Nearby reservoirs
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Boat launches
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River runs
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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 Trinity River Above Nf Trinity River Near Helena in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Trinity River Above Nf Trinity River Near Helena crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Trinity River Above Nf Trinity River Near Helena
Where does the streamflow data for Trinity River Above Nf Trinity River Near Helena come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 11526400. 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 Trinity River Above Nf Trinity River Near Helena 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 Trinity River Above Nf Trinity River Near Helena report
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