Colorado River Below Yuma Main Canal Ww At Yuma Flow Report
As of July 17, 2026, Colorado River Below Yuma Main Canal Ww At Yuma is flowing at 724 cfs with a gage height of 8.99 ft, rising 20% over the past 24 hours. Source: USGS gauge #09521100, refreshed throughout the day.
Historical Data
Colorado River Below Yuma Main Canal Ww At Yuma at a glance
How Colorado River Below Yuma Main Canal Ww At Yuma is running right now, where it sits on the map, and the key gauge stats.
Colorado River Below Yuma Main Canal Ww At Yuma is flowing at 724 cfs, with the water sitting 8.99 ft at the gage. Flow is up 20% since yesterday — a rising hydrograph.
This is USGS gauge #09521100 in California. Over the past 10 days the average has been 646 cfs, peaking at 724 cfs.
For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the California flow report.
Engineering Data
Flow-duration statistics and observed peak-flow context computed from this gauge’s complete daily record (USGS #09521100).
Estimate flows at an ungauged site
Drainage-area ratio transfer from this gauge . Most reliable for hydrologically similar sites in the same watershed with area ratios between roughly 0.5 and 1.5.
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, Colorado R Blw Yuma Main Canal Ww At Yuma is expected to rise from today's 601 cfs, toward roughly 678 cfs by 2026-07-20 (likely range 488-941 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.
Colorado River Below Yuma Main Canal Ww At Yuma
The water flow is influenced by various providers/constituents, including snowmelt, reservoir releases, and irrigation diversions. Tributaries and dams such as the Hoover Dam also impact the flow. The hydrology exhibits seasonal trends, with higher flow in the spring and lower flow in the summer. Interestingly, the Colorado River is one of the most litigated rivers in the world, with numerous disputes over water rights and allocation among the seven states it serves.
Nearby streamflow levels
Cross-check Colorado River Below Yuma Main Canal Ww At Yuma's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Colorado R Blw Yuma Main Canal Ww At Yuma | 724 cfs |
| Yuma Main Canal Above Wasteway Nr Winterhaven | 464 cfs |
| Yuma Main Canal Wasteway At Yuma | 141 cfs |
| Yuma Main Canal Bl Colo R Siphon | 313 cfs |
| Reservation Main Drain No. 4 Nr Yuma | 44 cfs |
| Div. From Yuma Main Canal For Yuma Municipal | 17 cfs |
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 Colorado River Below Yuma Main Canal Ww At Yuma in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Colorado River Below Yuma Main Canal Ww At Yuma crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Colorado River Below Yuma Main Canal Ww At Yuma
Where does the streamflow data for Colorado River Below Yuma Main Canal Ww At Yuma come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 09521100. 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 Colorado River Below Yuma Main Canal Ww At Yuma 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.
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