Around here
Around East Fork Blacks Fork
Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US
About this river
East Fork Blacks Fork is a 14.3 mile stream. Streamflow is measured at the USGS gauge Blacks Fork near Robertson, WY (site 09217900). The National Hydrography Dataset places it at stream order 4. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1966 to 2026
East Fork Blacks Fork typically runs highest in June, at a median 630 cfs, and lowest in February, at 22 cfs. The highest flow on record for any single day is 2,860 cfs, in 2011.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 24 | 21 to 31 |
| February | 22 | 18 to 27 |
| March | 23 | 18 to 28 |
| April | 39 | 28 to 76 |
| May | 393 | 225 to 573 |
| June | 630 | 399 to 988 |
| July | 200 | 127 to 325 |
| August | 73 | 54 to 112 |
| September | 54 | 42 to 76 |
| October | 49 | 36 to 66 |
| November | 40 | 28 to 47 |
| December | 29 | 23 to 37 |
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 54 years of record. Statistics published by the US Geological Survey for Blacks Fork near Robertson, WY (site 09217900). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Made to print
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Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show East Fork Blacks Fork'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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