San Antonio Rv Near Elmendorf flow report
As of July 14, 2026, San Antonio Rv Near Elmendorf is flowing at 332 cfs with a gage height of 11.68 ft, receding 78% over the past 24 hours. Source: USGS gauge #08181800, refreshed throughout the day.
Historical Data
San Antonio Rv Near Elmendorf at a glance
How San Antonio Rv Near Elmendorf is running right now, where it sits on the map, and the key gauge stats.
San Antonio Rv Near Elmendorf is flowing at 332 cfs, with the water sitting 11.68 ft at the gage. Flow is down 78% since yesterday as the gauge recedes.
This is USGS gauge #08181800 in Texas. Over the past 10 days the average has been 421 cfs, peaking at 1,550 cfs.
For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the Texas flow report.
Streamflow Forecast
Over the next 5 days, San Antonio Rv Nr Elmendorf is expected to recede from today's 332 cfs, toward roughly 267 cfs by 2026-07-19 (likely range 132-543 cfs) -- drier than normal for the date.
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.
San Antonio Rv Near Elmendorf
The river is primarily fed by two major tributaries, the Medina River and the Guadalupe River. The San Antonio River also flows through several dams, including the Martinez Dam and the Mitchell Lake Dam. The hydrology of the river is affected by seasonal trends, with higher flows typically occurring during the spring and summer months. Interesting facts about the San Antonio River include its role in the Battle of the Alamo and its designation as a UNESCO World Heritage Site. Overall, the San Antonio RV stream gauge provides important data for monitoring the river's flow and understanding its hydrology.
Nearby streamflow levels
Cross-check San Antonio Rv Near Elmendorf's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| San Antonio Rv Nr Elmendorf | 332 cfs |
| San Antonio Rv Nr Victor Braunig Lk Nr Elmendorftx | 461 cfs |
| Medina Rv At San Antonio | 153 cfs |
| San Antonio Rv At Loop 410 At San Antonio | 35 cfs |
| Salado Ck At Loop 13 At San Antonio | 9 cfs |
| San Antonio Rv Nr Floresville | 1,040 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near San Antonio Rv Near Elmendorf. 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 |
|---|---|
| San Miquel River | 0 in |
Plan a trip
Reservoirs, boat launches, river runs, and fishing spots within driving distance of San Antonio Rv Near Elmendorf.
Boat launches
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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 Antonio Rv Near Elmendorf in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when San Antonio Rv Near Elmendorf crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About San Antonio Rv Near Elmendorf
Where does the streamflow data for San Antonio Rv Near Elmendorf come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 08181800. 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 Antonio Rv Near Elmendorf 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 Antonio Rv Near Elmendorf report
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