About this river
Boulder Creek is an 8.7 mile river near Wyoming Fishing Company in Wyoming. Streamflow is measured at the USGS gauge Boulder Creek above Boulder Lake, near Boulder, WY (site 09201500). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1939 to 2026
Boulder Creek typically runs highest in June, at a median 737 cfs, and lowest in September, at 11 cfs. The highest flow on record for any single day is 2,390 cfs, in 2024.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 20 | 17 to 25 | |
| February | 23 | 15 to 31 | |
| March | 24 | 21 to 27 | |
| April | 101 | 62 to 141 | |
| May | 470 | 272 to 870 | |
| June | 737 | 359 to 1,120 | |
| July | 112 | 95 to 157 | |
| August | 19 | 10 to 25 | |
| September | 11 | 8.6 to 16 | |
| October | 22 | 9.3 to 74 | |
| November | 32 | 13 to 74 | |
| December | 25 | 13 to 39 |
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 4 years of record. Statistics published by the US Geological Survey for Boulder Creek above Boulder Lake, near Boulder, WY (site 09201500). 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 Boulder 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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