About this river
Green River is a 54.6 mile river near Buckboard Marina in Wyoming. Streamflow is measured at the USGS gauge Green River near Green River, WY (site 09217000). The National Hydrography Dataset places it at stream order 8. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1952 to 2025
Green River typically runs highest in June, at a median 3,945 cfs, and lowest in December, at 792 cfs. The highest flow on record for any single day is 16,700 cfs, in 1965.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 800 | 520 to 1,050 | |
| February | 846 | 613 to 1,090 | |
| March | 931 | 718 to 1,220 | |
| April | 1,300 | 885 to 1,685 | |
| May | 1,710 | 1,090 to 3,080 | |
| June | 3,945 | 1,625 to 6,520 | |
| July | 1,720 | 1,030 to 3,520 | |
| August | 1,340 | 951 to 1,620 | |
| September | 941 | 675 to 1,215 | |
| October | 904 | 672 to 1,130 | |
| November | 871 | 658 to 1,065 | |
| December | 792 | 487 to 1,050 |
Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 74 years of record. Statistics published by the US Geological Survey for Green River near Green River, WY (site 09217000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
One mapped launch sits in the mapped area of Green River. Ramp data comes from the USGS national boat-ramp inventory.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Green River's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
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