Utah · Green River, UT
Green River float season
Gauge 09315000 on the Labyrinth and Stillwater canyons below Green River. The launch point for Labyrinth and Stillwater canyons, where canoeists disappear into slickrock meanders for days at a time.
Right now at this gauge
loading CFS
Checking the live gauge…
Well above typical for this date
Live reading from the USGS gauge page for Green River. Provisional data — subject to revision.
The year on this river
In a typical year at the Green River gauge, the Green River runs fullest Apr–Jun and leanest Dec–Feb. Where today's reading falls inside that rhythm matters more than the raw number — the same flow that feels thin in spring can be the summer norm. Half of all past June days at this gauge ran above 16,700 CFS; the December median is 2,000 CFS.
| Month | Typical flow (CFS) | Relative volume |
|---|---|---|
| January | 2,030 | |
| February | 2,350 | |
| March | 3,630 | |
| April | 5,540 | |
| May | 12,900 | |
| June | 16,700 | |
| July | 5,370 | |
| August | 2,890 | |
| September | 2,390 | |
| October | 2,710 | |
| November | 2,710 | |
| December | 2,000 |
Record context
This gauge has measured daily flow since 1895 — 131 years of record. The largest daily average ever logged here was 66,700 CFS, in June 1917. Rivers do that sometimes; it's why the safety panel above isn't decoration.
Planning dates? The trip-window checker shows what flows have historically looked like on any week you pick for this river, or see what a CFS actually looks like.
More Utah float rivers
-
Colorado River
Moab daily through Professor Valley, Hittle Bottom to Take Out Beach
Fullest: Apr–Jun
-
Green River
Flaming Gorge tailwater, A and B sections through Little Hole
Fullest: Dec–Feb
-
Provo River
Middle Provo, Jordanelle tailwater through Charleston to Deer Creek
Fullest: May–Jul
Common questions
When is the Green River usually at its fullest?
At the Green River gauge, the fullest stretch of a typical year is Apr–Jun, with the single highest monthly median in June (about 16,700 CFS). The leanest months are usually Dec–Feb.
What is a typical summer flow on the Green River?
The July median at this gauge is about 5,370 CFS — half of past Julys ran higher, half lower. Check the ribbon chart above to see how summer compares with the rest of the year here.
Is the Green River safe to float right now?
No flow number can answer that, and this site never labels a river safe. What the data can tell you is how today's reading compares with 126 years of this date's history — well above typical means pushier, colder, faster water. Pair that context with a PFD, a look at the river from the bank, and a call to a local outfitter before you commit.
Which USGS gauge does this page use?
USGS gauge 09315000 (GREEN RIVER AT GREEN RIVER, UT), chosen because it best represents the Labyrinth and Stillwater canyons below Green River. Daily records here reach back to 1895.
Data: USGS gauge 09315000, approved daily records 1895–2026, retrieved 2026-08-07. Live readings are provisional and subject to revision. U.S. Geological Survey data is public domain.