Sulphur River river
Total streamflow across the Sulphur River was last observed at 1,180 cfs, and is expected to yield approximately 2,341 acre-ft of water today; about 22% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 5,479 cfs, with recent peaks last observed on 2025-04-09 when daily discharge volume was observed at 36,400 cfs.
Maximum discharge along the river is currently at the Sulphur Rv Nr Talco reporting a streamflow rate of 1,180 cfs. However, the streamgauge with the highest stage along the river is the Sulphur Rv At Ih 30 Nr Dalby Springs with a gauge stage of 11.08 ft. This river is monitored from 3 different streamgauging stations along the Sulphur River, the highest being situated at an altitude of 290 ft, the Sulphur Rv Nr Talco.
River streamflow levels
Daily aggregate streamflow across every monitored gauge along the Sulphur River. Use the range buttons to zoom in on a specific period.
Total streamflow
Sum of all monitored streamgauges · daily
Every streamgauge along the Sulphur River
All 3 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)▾ |
|---|---|---|---|---|---|---|---|
|
Sulphur Rv Nr Talco
TX
USGS 07343200
|
1,180 | 8.19 | 544.8 | 233% | 0 | 52,700 | 290 |
|
Sulphur Rv At Ih 30 Nr Dalby Springs
TX
USGS 07343450
|
692 | 11.08 | -20.7 | 80% | 0 | 40,000 | 265 |
|
Sulphur Rv Nr Texarkana
TX
USGS 07344210
|
921 | 6.70 | -23.4 | 39% | 554 | 12,600 | 210 |
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
Sulphur River
The Sulphur River is a 183-mile long river that flows through northeastern Texas and southeastern Oklahoma. The river was named after the sulfur-bearing springs found in the area. The Sulphur River's course is characterized by wide bends, oxbows, and numerous sloughs. The river's hydrology is regulated by several dams and reservoirs, including Wright Patman Lake and Lake O' the Pines. These reservoirs provide water for recreational activities such as fishing and boating, as well as irrigation for agriculture. The Sulphur River has a rich history, as it was an important transportation route for Native American tribes, early settlers, and steamboat traffic during the 19th century. Today, the river is home to diverse wildlife, including the endangered Texas horned lizard and the bald eagle.
Recreation along the Sulphur River
Fishing access and paddle runs Snoflo tracks within the watershed.
Track the Sulphur 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 Sulphur River
Where does the data for the Sulphur 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.