San Pedro River At Charleston flow report
As of July 15, 2026, San Pedro River At Charleston is flowing at 75 cfs with a gage height of 2.42 ft, receding 52% over the past 24 hours. Source: USGS gauge #09471000, refreshed throughout the day.
Historical Data
San Pedro River At Charleston at a glance
How San Pedro River At Charleston is running right now, where it sits on the map, and the key gauge stats.
San Pedro River At Charleston is flowing at 75 cfs, with the water sitting 2.42 ft at the gage. Flow is down 52% since yesterday as the gauge recedes.
This is USGS gauge #09471000 in Arizona. Over the past 10 days the average has been 60 cfs, peaking at 174 cfs.
For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the Arizona flow report.
Engineering Data
Flow-duration statistics and observed peak-flow context computed from this gauge’s complete daily record (USGS #09471000).
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, San Pedro River At Charleston is expected to recede from today's 74 cfs, toward roughly 54 cfs by 2026-07-20 (likely range 7-450 cfs) -- about normal for the date.
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.
San Pedro River At Charleston
The river's primary flow constituents are runoff from monsoon rains and snowmelt from the Huachuca Mountains. The river is fed by several tributaries, including the Babocomari River and the San Pedro's East Fork. There are no dams on the San Pedro River. The river flow is highly variable, with a peak in the summer monsoon season and low flow in the winter dry season. The San Pedro River is also an important bird migration corridor, with over 350 species of birds utilizing the river as a stopping point.
Nearby streamflow levels
Cross-check San Pedro River At Charleston's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| San Pedro River At Charleston | 75 cfs |
| Babocomari River Near Tombstone | 1 cfs |
| San Pedro River Near Tombstone | 117 cfs |
| Banning Creek Near Bisbee | 0 cfs |
| Ramsey Canyon Near Sierra Vista | 0 cfs |
| Huachuca Canyon Near Fort Huachuca | 0 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 San Pedro River At Charleston in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when San Pedro River At Charleston crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About San Pedro River At Charleston
Where does the streamflow data for San Pedro River At Charleston come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 09471000. 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 San Pedro River At Charleston 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 San Pedro River At Charleston report
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