Reservation Main Drain No. 4 Near Yuma flow report
As of July 14, 2026, Reservation Main Drain No. 4 Near Yuma is flowing at 47 cfs with a gage height of 0.51 ft, rising 10% over the past 24 hours. Source: USGS gauge #09530000, refreshed throughout the day.
Historical Data
Reservation Main Drain No. 4 Near Yuma at a glance
How Reservation Main Drain No. 4 Near Yuma is running right now, where it sits on the map, and the key gauge stats.
Reservation Main Drain No. 4 Near Yuma is flowing at 47 cfs, with the water sitting 0.51 ft at the gage. Flow is up 10% since yesterday — a rising hydrograph.
This is USGS gauge #09530000 in California. Over the past 10 days the average has been 41 cfs, peaking at 47 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, Reservation Main Drain No. 4 Nr Yuma is expected to hold near today's 47 cfs, toward roughly 43 cfs by 2026-07-19 (likely range 32-58 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.
Reservation Main Drain No. 4 Near Yuma
4 near Yuma, CA stream gauge is an important hydrological monitoring site in the region. It measures flow rates in the drain, which is responsible for carrying agricultural runoff to the Colorado River. Constituents of the flow include nutrients and sediment, which can have negative impacts on water quality downstream. There are several tributaries that feed into the drain, including the Drop 2 Canal and the Westside Main Canal. The flow rates vary seasonally, with higher amounts during the irrigation season. Interestingly, the drain passes under the Yuma Territorial Prison State Historic Park, which was once a notorious prison in the Wild West era. Overall, monitoring the Reservation Main Drain No. 4 is an important aspect of managing water resources in the region.
Nearby streamflow levels
Cross-check Reservation Main Drain No. 4 Near Yuma's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Reservation Main Drain No. 4 Nr Yuma | 47 cfs |
| Yuma Main Canal Wasteway At Yuma | 154 cfs |
| Yuma Main Canal Above Wasteway Nr Winterhaven | 437 cfs |
| Yuma Main Canal Bl Colo R Siphon | 257 cfs |
| Div. From Yuma Main Canal For Yuma Municipal | 36 cfs |
| Colorado R Blw Yuma Main Canal Ww At Yuma | 670 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 Reservation Main Drain No. 4 Near Yuma in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Reservation Main Drain No. 4 Near Yuma crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Reservation Main Drain No. 4 Near Yuma
Where does the streamflow data for Reservation Main Drain No. 4 Near Yuma come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 09530000. 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 Reservation Main Drain No. 4 Near 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.
Access the free Reservation Main Drain No. 4 Near Yuma report
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