About this river
Flat Creek is a 5.2 mile stream near Jenny Lake Boating in Wyoming. Streamflow is measured at the USGS gauge Snake River below Flat Creek, near Jackson, WY (site 13018750). The National Hydrography Dataset places it at stream order 4. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1976 to 2026
Flat Creek typically runs highest in June, at a median 9,400 cfs, and lowest in February, at 1,230 cfs. The highest flow on record for any single day is 30,200 cfs, in 1997.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 1,240 | 1,100 to 1,430 | |
| February | 1,230 | 1,100 to 1,470 | |
| March | 1,380 | 1,170 to 1,660 | |
| April | 2,005 | 1,550 to 2,735 | |
| May | 5,820 | 3,970 to 7,980 | |
| June | 9,400 | 7,565 to 12,750 | |
| July | 5,260 | 4,340 to 7,670 | |
| August | 3,970 | 3,130 to 4,950 | |
| September | 3,360 | 2,800 to 4,095 | |
| October | 1,640 | 1,420 to 1,890 | |
| November | 1,425 | 1,280 to 1,710 | |
| December | 1,330 | 1,170 to 1,530 |
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 50 years of record. Statistics published by the US Geological Survey for Snake River below Flat Creek, near Jackson, WY (site 13018750). 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 Flat Creek'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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