Gardner River Flow Today
As of October 2, 2026 at 3:30 AM, the Gardner River is flowing at 101 cfs near Mammoth Ynp, MT — 87% of normal for the date and down 3% in 24 hours. ❤ Favorite
Gardner River map
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Gardner River conditions today
Where the river is running versus normal, what’s rising or dropping, and what it means for a trip — built from the live USGS readings below.
At Mammoth Ynp, the Gardner River is running 101 cfs — 87% of normal, down 3% since yesterday. Along the river, 1 of 1 reporting gauges are below normal (the typical gauge is at 87% of normal).
How the Gardner River compares to normal
Every reporting gauge from the top of the river to the bottom: bar length is today’s flow, colour is percent of normal for the date.
Flow along the river, upstream to downstream
- Mammoth Ynp5,632 ft 101 cfs87%
Bar length uses a square-root scale so small headwater flows stay visible next to big downstream ones. Colour: <50% 50–90 90–110 110–150 150%+ of normal.
Where every gauge sits
One dot per Gardner River streamgauge, placed by its own percent of normal. The line is the typical gauge (87%).
Gardner River flow report
| Streamgage | Streamflow | % of normal | 24h | Gage height | Elevation |
|---|---|---|---|---|---|
|
Gardner River Near Mammoth Ynp MT
Oct 2, 3:30 AM · USGS 06191000 |
101 cfs | 87% | -3% | 1.82 ft | 5,632 ft |
USGS provisional data. Readings are in each gauge’s local time; gauges silent for more than 3 days are marked “Last reported”. Tap any gauge for its hydrograph, forecast and history.
Gardner River streamflow over time
Daily total flow across every monitored gauge on the river (this total last updated earlier; the live gauge readings above are current).
Gardner River
The Gardner River is a tributary of the Yellowstone River in Wyoming and Montana. It is approximately 25 miles long and flows through the Yellowstone National Park. The river was named after Johnson Gardner, a fur trapper who explored the area in the early 1800s. The Gardner River is fed by several hot springs and geysers, including Mammoth Hot Springs, which contribute to its hydrology. There are no major reservoirs or dams on the Gardner River. Recreational activities such as fishing, hiking, and camping are popular along the river. The Gardner River also supports agriculture in the surrounding area, including hay production and grazing for livestock. Despite its importance to the local ecosystem and economy, the Gardner River faces threats from climate change, invasive species, and human activity.
Fishing near the Gardner River
About the Gardner River
How is the Gardner River flowing right now?
As of October 2, 2026, the Gardner River is flowing at 101 cfs near Mammoth Ynp, MT, about 87% of normal for the date. Every gauge’s live reading is in the table above.
Is the Gardner River running high or low?
The typical gauge on the Gardner River is at 87% of normal for the date. Above 100% means higher than the historical average for this calendar day; below 100% means lower. The profile above shows which reaches are high or low.
Where does the data come from?
Discharge and gage height are from the USGS National Water Information System; flood stages from the National Weather Service. The history chart sums every monitored gauge on the river.
Can I get alerts for a gauge?
Yes — open any gauge from the table, favorite it in the Snoflo app and set a flow threshold.