Blanco River river
Total streamflow across the Blanco River was last observed at 17 cfs, and is expected to yield approximately 34 acre-ft of water today; about 95% of normal. Average streamflow for this time of year is 18 cfs, with recent peaks last observed on 2025-06-13 when daily discharge volume was observed at 1,222 cfs.
Maximum discharge along the river is currently at the Blanco Rv At Halifax Rch Nr Kyle reporting a streamflow rate of 10.4 cfs. However, the streamgauge with the highest stage along the river is the Blanco Rv At San Marcos with a gauge stage of 7.9 ft. This river is monitored from 5 different streamgauging stations along the Blanco River, the highest being situated at an altitude of 916 ft, the Blanco Rv At Fischer Store Rd Nr Fischer.
River streamflow levels
Daily aggregate streamflow across every monitored gauge along the Blanco River. Use the range buttons to zoom in on a specific period.
Total streamflow
Sum of all monitored streamgauges · daily
Every streamgauge along the Blanco River
All 5 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)▾ |
|---|---|---|---|---|---|---|---|
|
Blanco Rv At Fischer Store Rd Nr Fischer
TX
USGS 08170950
|
7 | 3.34 | -9.1 | 44% | 1 | 7,620 | 916 |
|
Blanco Rv At Wimberley
TX
USGS 08171000
|
6 | 3.53 | -26.4 | 20% | 1 | 7,120 | 801 |
|
Blanco Rv At Halifax Rch Nr Kyle
TX
USGS 08171290
|
10 | 0.91 | -21.8 | 31% | 1 | 2,430 | 688 |
|
Blanco Rv Nr Kyle
TX
USGS 08171300
|
· | 2.97 | · | 0% | 0 | 13,300 | 633 |
|
Blanco Rv At San Marcos
TX
USGS 08171350
|
1 | 7.90 | 12.2 | 26% | 0 | 3,580 | 552 |
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
Blanco River
The Blanco River is a 87-mile long river that flows through the Texas Hill Country. It is known for its crystal-clear waters and is a popular spot for recreational activities such as swimming, kayaking, and fishing. The river is named after the Spanish word for "white," as the limestone riverbed gives the water a milky appearance. The river also has a rich history, as it was once used by Native Americans and early settlers as a source of water and transportation. In terms of hydrology, the Blanco River is known for its flash flooding, which can be dangerous for those in the area. There are several reservoirs and dams along the river, including the Blanco and Wimberley Dams, which are used for agricultural purposes and to control flooding.
Recreation along the Blanco River
Fishing access and paddle runs Snoflo tracks within the watershed.
Track the Blanco 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 Blanco River
Where does the data for the Blanco 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.