Brock Reservoir Outlet Near Calexico flow report
As of July 13, 2026, Brock Reservoir Outlet Near Calexico is flowing at 144 cfs with a gage height of 24.72 ft, receding 74% over the past 24 hours. Source: USGS gauge #09527660, refreshed throughout the day.
Historical Data
Brock Reservoir Outlet Near Calexico at a glance
How Brock Reservoir Outlet Near Calexico is running right now, where it sits on the map, and the key gauge stats.
Brock Reservoir Outlet Near Calexico is flowing at 144 cfs, with the water sitting 24.72 ft at the gage. Flow is down 74% since yesterday as the gauge recedes.
This is USGS gauge #09527660 in California. Over the past 10 days the average has been 391 cfs, peaking at 1,230 cfs.
Over the next 5 days, Brock Reservoir Outlet Near Calexico is expected to recede from today's 144 cfs, toward roughly 59 cfs by 2026-07-18 (likely range 3-1241 cfs) -- drier than normal for the date.
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
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.
Brock Reservoir Outlet Near Calexico
The flow is provided by tributaries such as the New River and Alamo River, and the reservoir is supplied by the Colorado River. The outlet is regulated by the Brock Reservoir Dam, which was constructed in the 1930s. Seasonal trends show higher flows during the winter and spring due to increased precipitation and snowmelt. Interestingly, the New River that feeds into the reservoir is one of the most polluted rivers in the country, with high levels of agricultural runoff and wastewater. Water from the reservoir is used for irrigation in the Imperial Valley, but efforts are being made to improve water quality in the region.
Nearby streamflow levels
Cross-check Brock Reservoir Outlet Near Calexico's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Brock Reservoir Outlet Near Calexico | 144 cfs |
| Brock Reservoir Inlet Near Calexico | 4 cfs |
| All-American Canal Below Drop 2 Reservoir Outlet | 3,650 cfs |
| Coachella Cn A All American Cn Div Nr Holtville Ca | 672 cfs |
| Drain 8-B Near Winterhaven | 9 cfs |
| Ypsilanti Canal Nr Winterhaven | 0 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near Brock Reservoir Outlet Near Calexico. 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 |
|---|---|
| El Centro 2 Ssw | 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 Brock Reservoir Outlet Near Calexico in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Brock Reservoir Outlet Near Calexico crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Brock Reservoir Outlet Near Calexico
Where does the streamflow data for Brock Reservoir Outlet Near Calexico come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 09527660. 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 Brock Reservoir Outlet Near Calexico 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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