Medina River river
Total streamflow across the Medina River was last observed at 1,063 cfs, and is expected to yield approximately 2,107 acre-ft of water today; about 252% of normal. River levels are high. Average streamflow for this time of year is 422 cfs, with recent peaks last observed on 2025-06-13 when daily discharge volume was observed at 5,248 cfs.
Maximum discharge along the river is currently at the Medina Rv At San Antonio reporting a streamflow rate of 988 cfs. This is also the highest stage along the Medina River, with a gauge stage of 7.11 ft at this location. This river is monitored from 4 different streamgauging stations along the Medina River, the highest being situated at an altitude of 1,194 ft, the Medina Rv At Bandera.
River streamflow levels
Daily aggregate streamflow across every monitored gauge along the Medina River. Use the range buttons to zoom in on a specific period.
Total streamflow
Sum of all monitored streamgauges · daily
Every streamgauge along the Medina River
All 4 USGS gauges Snoflo tracks for this river, with current flow, stage, recent change, percent of normal, and the gauge's all-time min / max. Click any header to sort. Cells are heatmapped relative to the column min/max -- darker blue = higher.
| Streamgauge▾ | Streamflow (cfs)▾ | Gauge stage (ft)▾ | 24h Δ (%)▾ | % Normal▾ | Min (cfs)▾ | Max (cfs)▾ | Elevation (ft)▾ |
|---|---|---|---|---|---|---|---|
|
Medina Rv At Bandera
TX
USGS 08178880
|
18 | 3.55 | -2.8 | 75% | 0 | 44,500 | 1,194 |
|
Medina Rv Nr Macdona
TX
USGS 08180700
|
57 | 1.30 | 266.5 | 135% | 0 | 6,570 | 605 |
|
Medina Rv Nr Von Ormy
TX
USGS 08180720
|
52 | 5.92 | · | · | · | · | 583 |
|
Medina Rv At San Antonio
TX
USGS 08181500
|
988 | 7.11 | 85.0 | 816% | 14 | 19,700 | 468 |
Maximum streamflow discharge by year
The single highest aggregate discharge recorded each year. Spotting the multi-year trend reveals droughts vs. wet cycles long before the headline daily flow does.
Annual peak discharge
From the river's full record · one point per water year
Streamflow elevation profile
Each bubble is one gauge along the river, plotted by current streamflow (x-axis) vs elevation (y-axis), sized by gauge stage. Reading top-to-bottom traces the river from headwaters down to its mouth -- you can see flow accumulate as elevation drops.
Elevation vs streamflow
One point per monitored gauge · bubble size = gauge stage
Medina River
The Medina River is located in south central Texas and stretches for 116 miles. The river was discovered by Alonso De León in 1689 and was named after the Spanish governor of Coahuila y Tejas, Pedro de Medina. The river is fed by numerous springs and tributaries and is a vital source of water for agricultural communities in the region. The river has several dams including the Medina Lake Dam, which was constructed in the 1910s to control flooding and provide a reliable source of water for San Antonio. The river is also popular for recreational activities such as swimming, fishing, and kayaking. The river's ecosystem supports various species of fish, birds, and other wildlife.
Recreation along the Medina River
Fishing access and paddle runs Snoflo tracks within the watershed.
Track the Medina River in the Snoflo app
Set per-gauge push alerts (e.g. "alert me when flow at the Russian R Nr Healdsburg crosses 5,000 cfs"), and Snoflo's iOS app pushes the moment USGS reports the crossing.
About the Medina River
Where does the data for the Medina River come from?
Streamflow and gauge stage data are sourced from the U.S. Geological Survey (USGS) National Water Information System. The aggregate flow shown at the top of the page is computed by Snoflo as the sum of all monitored gauges along the river.
How is "percent of normal" calculated?
Today's aggregate streamflow is compared to the historical average aggregate streamflow on this calendar day across the river's full record. 100% means right on average; values above 100% indicate above-normal flow (wet year); values below indicate below-normal (dry year or drought).
Why are some gauges showing very different flows?
Gauges along a river measure flow at different points: headwater gauges read what's coming off the snowpack or mountain runoff; downstream gauges integrate everything upstream, including tributary inputs. Wide spreads usually mean a tributary is contributing significantly between gauges.
What's the elevation profile chart showing?
Each bubble is one gauge along the river, plotted by streamflow (x-axis) and elevation (y-axis), sized by gauge stage. Reading top-down traces the river from headwaters to mouth -- you can see flow build as elevation drops.
Can I get alerts when a specific gauge crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app on a per-gauge basis. Open any individual streamgauge from the table above and favorite it to set a discharge threshold.