Streamflow
Below normalYampa River near Maybell streamflow
Daily mean discharge, Yampa-Green basin, Colorado
Data through Sep 30, 2026 · source last checked Oct 1, 2026 · page revised Oct 1, 2026
Cite
- Discharge
About this data
- Source
- US Geological Survey (USGS)
- Series
- Daily mean streamflow (discharge)
- Geography
- Yampa River near Maybell
- Unit
- cfs
- Calculation
- Daily mean
- Last observation
- Sep 30, 2026
- Update frequency
- Daily
Now 104 cfs, 24% below the 5-yr median.
Yampa River near Maybell fell to 104 cfs, down 47.5% on the week. Month over month the flow rose 24.3%, but it sits 24% below the 5-year median. Year over year, discharge is down 17.5%.
| Period | Current | Prior | Change |
|---|---|---|---|
| Week over week | 104 cfs | 198 cfs | -47.5% |
| Month over month | 104 cfs | 84 cfs | +24.3% |
| Year over year | 104 cfs | 126 cfs | -17.5% |
| vs 5-yr median | 104 cfs | 137 cfs | -24.1% |
| Reading | Discharge |
|---|---|
| Lowest on record for this week | 111 cfs |
| Median for this week | 137 cfs |
| Highest on record for this week | 289 cfs |
Previous weeks
Week of Sep 23, 2026
The Yampa near Maybell ran at 198 cfs, up 163 cfs from the prior week. Month-to-month discharge rose 156 cfs, and year-over-year flow is up 72 cfs. The river stands 22% above the 5-year median.
Week of Sep 15, 2026
Yampa near Maybell fell to 26 cfs, down 59% from the prior week and down 78% year-over-year. The gauge is running 82% below its 5-year median.
Week of Sep 2, 2026
The Yampa at Maybell hit 133 cfs, up 148.1% on the week. The flow ran 23% above the 5-year median.
Week of Aug 26, 2026
Yampa flow at Maybell is 54 cfs, 60% below the 5-yr median. The gauge rose 21.3% week over week but fell 53.4% from a month ago and 30.5% year over year.
About Yampa River near Maybell
USGS gage 09251000 measures the Yampa River near Maybell, Colorado, in the northwest corner of the state above the river's canyon and its confluence with the Green in Dinosaur National Monument. The Yampa is the largest substantially unregulated river left in the Colorado system: there is no major mainstem storage above this gage, only agricultural diversions in the Yampa Valley, so the line here is close to what the snowpack actually delivered.
That makes its year the textbook one, a low winter baseflow, a steep May rise, a June peak, then a long taper into a very low late summer. It also makes this gage the reference other basins are read against, because it shows runoff without an operating decision layered on top. A low year here is felt immediately: the Yampa has no reservoir to buffer it, so late-summer readings drop far enough to trigger state calls on junior water rights and stress the fishery downstream.