Fontana Uwc Surface Div Weir 2 Near Fontana flow report

California, USA USGS #11062399 ↗

As of July 13, 2026, Fontana Uwc Surface Div Weir 2 Near Fontana is flowing at 15 cfs with a gage height of 1.69 ft, holding steady over the past 24 hours. Source: USGS gauge #11062399, refreshed throughout the day.

⚠ Extreme Heat Watch · Extreme Heat Watch issued July 12 at 9:58PM PDT until July 16 at 8:00PM PDT by NWS San Diego CA
Stale data This gauge hasn’t reported in days (last reading unknown). The readings below may not reflect current conditions.
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Right now · latest observation
Fontana Uwc Surface Div Weir 2 Near Fontana
USGS gauge #11062399
15 cfs streamflow
Latest reading from this gauge.
Gage height
1.69ft
Water temp
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% of median
Since yesterday
↓ -4%
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Conditions summary

Fontana Uwc Surface Div Weir 2 Near Fontana at a glance

How Fontana Uwc Surface Div Weir 2 Near Fontana is running right now, where it sits on the map, and the key gauge stats.

Fontana Uwc Surface Div Weir 2 Near Fontana is flowing at 15 cfs, with the water sitting 1.69 ft at the gage. Flow has held roughly steady over the past 24 hours.

This is USGS gauge #11062399 in California. Over the past 10 days the average has been 16 cfs, peaking at 17 cfs.

For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the California flow report.

Fontana Uwc Surface Div Weir 2 Near Fontana on the map Open map →
Site IDUSGS 11062399
Last updated2026-07-12
Gage height, ft1.69 ft
Streamflow, ft³/s15.0 ft3/s
Stream water level elevation above NAVD 1988, in ft2255.42 ft
Max recorded40 cfs
Historical context

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.

Detailed forecast

Weather Forecast

Hourly detail

Next 5 days, hour by hour

Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.

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Deep dive

5-day forecast table

Every 3 hours, broken out across temperature, snow, rain, humidity, and wind.

TimeConditionTemp (°F)Snow (in)Rain (in)Humidity (%)Wind (mps)Wind dir
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Long-term outlook

15-day forecast

Daily temperatures, snow, and rain projected over the next two weeks.

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About this location

Fontana Uwc Surface Div Weir 2 Near Fontana

The U.S. Geological Survey operates the stream gauge, which provides valuable information about the flow rate of the river. The Santa Ana River is dammed by several structures, including the Seven Oaks Dam and Prado Dam. The flow rate of the river is highest during the winter and spring months due to precipitation and snowmelt. Interestingly, the Santa Ana River is the largest river completely contained within Southern California and is known for its recreational opportunities, including fishing, kayaking, and hiking along its banks.

Regional streamflow

Nearby streamflow levels

Cross-check Fontana Uwc Surface Div Weir 2 Near Fontana's discharge against nearby gauges to spot whether the change here is local or regional.

Regional snowpack

Nearby snowpack data

Snowpack at SNOTEL stations near Fontana Uwc Surface Div Weir 2 Near Fontana. Spring snowmelt is the dominant driver of streamflow in mountain basins -- a deep snowpack upstream means more runoff later in the season.

SNOTEL stationSnowpack
Lake Arrowhead 1.5 Se 0 in
Hesperia 1ene 0 in
Nearby recreation

Plan a trip

Reservoirs, boat launches, river runs, and fishing spots within driving distance of Fontana Uwc Surface Div Weir 2 Near Fontana.

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 Fontana Uwc Surface Div Weir 2 Near Fontana in the Snoflo app

Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Fontana Uwc Surface Div Weir 2 Near Fontana crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.

FAQ

About Fontana Uwc Surface Div Weir 2 Near Fontana

Where does the streamflow data for Fontana Uwc Surface Div Weir 2 Near Fontana come from?

Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 11062399. 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 Fontana Uwc Surface Div Weir 2 Near Fontana 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.