Green River river
Total streamflow across the Green River was last observed at 40,110 cfs, and is expected to yield approximately 79,557 acre-ft of water today; about 67% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 60,212 cfs, with recent peaks last observed on 2025-04-08 when daily discharge volume was observed at 270,704 cfs.
Maximum discharge along the river is currently at the Green River At Lock 2 At Calhoun reporting a streamflow rate of 15,200 cfs. However, the streamgauge with the highest stage along the river is the Green River Near Auburn with a gauge stage of 57.47 ft. This river is monitored from 20 different streamgauging stations along the Green River, the highest being situated at an altitude of 7,477 ft, the Green River At Warren Bridge.
River streamflow levels
Daily aggregate streamflow across every monitored gauge along the Green River. Use the range buttons to zoom in on a specific period.
Total streamflow
Sum of all monitored streamgauges · daily
Every streamgauge along the Green River
All 20 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)▾ |
|---|---|---|---|---|---|---|---|
|
Green River At Warren Bridge
WY
USGS 09188500
|
1,100 | 2.87 | 29.3 | 108% | 40 | 5,350 | 7,477 |
|
Green River Near La Barge
WY
USGS 09209400
|
1,420 | 5.59 | 29.1 | 54% | 291 | 17,900 | 6,531 |
|
Green River Below Fontenelle Reservoir
WY
USGS 09211200
|
654 | 11.14 | 0.0 | 35% | 343 | 10,600 | 6,401 |
|
Green River Near Green River
WY
USGS 09217000
|
767 | 1.19 | -5.8 | 39% | 332 | 10,300 | 6,070 |
|
Green River Near Greendale
UT
USGS 09234500
|
1,170 | 8.61 | 0.0 | 51% | 480 | 9,460 | 5,606 |
|
Green River Near Jensen
UT
USGS 09261000
|
3,620 | 3.77 | 3.1 | 32% | 718 | 31,900 | 4,765 |
|
Green River At Green River
UT
USGS 09315000
|
3,470 | 6.85 | -6.2 | 29% | 669 | 43,700 | 4,045 |
|
Green River At Mineral Bottom Nr Cynlnds Ntl Park
UT
USGS 09328920
|
3,870 | 8.29 | -3.0 | 45% | 835 | 28,700 | 3,952 |
|
Green River Nr New Hradec
ND
USGS 06344600
|
1 | 6.44 | -5.9 | 27% | 0 | 1,860 | 2,527 |
|
Green River Below Howard A Hanson Dam
WA
USGS 12105900
|
413 | 4.77 | -4.6 | 58% | 83 | 9,060 | 1,029 |
|
Green River Near Mckinney
KY
USGS 03305000
|
10 | 1.28 | -46.4 | 113% | 0 | 2,000 | 912 |
|
Green River At Purification Plant Near Palmer
WA
USGS 12106700
|
318 | 4.03 | -6.7 | 39% | 117 | 9,800 | 869 |
|
Green River Near Great Barrington
MA
USGS 01198000
|
15 | 0.87 | -10.8 | 19% | 4 | 3,190 | 694 |
|
Green River At Williamstown
MA
USGS 01333000
|
50 | 1.92 | 1.6 | 107% | 4 | 3,230 | 614 |
|
Green River Near Geneseo
IL
USGS 05447500
|
443 | 3.38 | -2.2 | 42% | 43 | 10,800 | 586 |
|
Green River At Munfordville
KY
USGS 03308500
|
1,390 | 4.68 | -35.9 | 151% | 70 | 49,900 | 553 |
|
Green River Near Colrain
MA
USGS 01170100
|
40 | 2.95 | -2.4 | 66% | 3 | 12,500 | 436 |
|
Green River At Paradise
KY
USGS 03316500
|
8,870 | 7.25 | -27.9 | 155% | 281 | 129,000 | 395 |
|
Green River At Lock 2 At Calhoun
KY
USGS 03320000
|
15,200 | 14.02 | -10.6 | 234% | 480 | 95,000 | 386 |
|
Green River Near Auburn
WA
USGS 12113000
|
605 | 57.47 | · | 49% | 212 | 12,200 | 95 |
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
Green River
The Green River is a 730-mile long river that flows through Wyoming, Colorado, and Utah. It is known for its beautiful canyons and unique geology. The river was first explored by John Wesley Powell in 1869 and was a major transportation route for Native Americans and settlers. The river is fed by numerous tributaries and is known for its hydroelectric power potential. There are several reservoirs and dams along the river, including Flaming Gorge Dam, which was completed in 1964 and provides irrigation water for agriculture and recreational opportunities such as boating and fishing. The Green River is also popular for whitewater rafting, hiking, and camping. The river is critical for agriculture in the region, providing water for crops such as hay, alfalfa, and wheat.
Recreation along the Green River
Fishing access and paddle runs Snoflo tracks within the watershed.
Track the Green 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 Green River
Where does the data for the Green 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.