About this river
Greys River is a 9.3 mile river near Teton Whitewater in Wyoming. Streamflow is measured at the USGS gauge Greys River above Reservoir, near Alpine, WY (site 13023000). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1937 to 2026
Greys River typically runs highest in June, at a median 1,875 cfs, and lowest in February, at 200 cfs. The highest flow on record for any single day is 6,170 cfs, in 1971.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 205 | 180 to 240 | |
| February | 200 | 175 to 225 | |
| March | 211 | 188 to 241 | |
| April | 530 | 373 to 825 | |
| May | 1,730 | 1,220 to 2,220 | |
| June | 1,875 | 1,265 to 2,430 | |
| July | 732 | 556 to 1,120 | |
| August | 442 | 359 to 553 | |
| September | 352 | 291 to 422 | |
| October | 309 | 265 to 366 | |
| November | 260 | 224 to 301 | |
| December | 223 | 190 to 257 |
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 Greys River above Reservoir, near Alpine, WY (site 13023000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Greys 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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