Blacks Fork Near Robertson, WY
USGS Site No: 09217900 • Blacks Fork • Summit County, UT
Blacks Fork Near Robertson, WY on the Blacks Fork is currently at 243 cfs (Very High — 115th percentile for this date) . Gage height: 2.94 ft.
Reading from
Historical Percentile Comparison
Today's discharge compared to the long-term record for October 27 at this station. Percentile rank shows what fraction of historical years had lower flow on this date.
| Percentile | Label | CFS Threshold | Today's Flow |
|---|---|---|---|
| 10th | Very Low threshold | 26 | |
| 25th | Low threshold | 31 | |
| 50th (Median) | Normal (median) | 47 | |
| 75th | High threshold | 57 | |
| 95th | Very High threshold | 82 |
30-Day Hydrograph
Recent discharge plotted against the historical 10th–95th percentile envelope for the same calendar days. Source: USGS daily values + long-term statistics.
30-Day Flow History
| Date | Discharge (CFS) | Gage Ht (ft) |
|---|---|---|
| May 28, 2026 | 289 | — |
| May 27, 2026 | 272 | — |
| May 26, 2026 | 235 | — |
| May 25, 2026 | 187 | — |
| May 24, 2026 | 164 | — |
| May 23, 2026 | 154 | — |
| May 22, 2026 | 161 | — |
| May 21, 2026 | 188 | — |
| May 20, 2026 | 198 | — |
| May 19, 2026 | 209 | — |
| May 18, 2026 | 223 | — |
| May 17, 2026 | 253 | — |
| May 16, 2026 | 290 | — |
| May 15, 2026 | 317 | — |
| Apr 20, 2026 | 117 | — |
| Apr 19, 2026 | 97 | — |
| Apr 18, 2026 | 92 | — |
| Apr 17, 2026 | 99 | — |
| Apr 16, 2026 | 113 | — |
| Apr 15, 2026 | 110 | — |
| Apr 14, 2026 | 109 | — |
| Apr 13, 2026 | 112 | — |
| Apr 12, 2026 | 119 | — |
| Apr 11, 2026 | 139 | — |
| Apr 10, 2026 | 135 | — |
| Apr 9, 2026 | 125 | — |
| Apr 8, 2026 | 116 | — |
| Apr 7, 2026 | 115 | — |
| Apr 6, 2026 | 115 | — |
| Apr 5, 2026 | 109 | — |
Station Information
- USGS Site No
- 09217900
- State
- UT
- County
- Summit County
- Coordinates
- 40.9590, -110.5797
- Drainage Area
- 126 mi²
- Datum (ft)
- 8,811.3
- HUC Code
- 14040107
Flood Stage Thresholds
- Action Stage
- 4.8 ft
- Flood Stage
- 5.0 ft
- Moderate Flood
- 5.3 ft
- Major Flood
- 5.5 ft
Currently 2.06 ft below flood stage.
Recent Extremes
- Max discharge
-
918 cfsJun 1, 2025
- Min discharge
-
11 cfsJan 19, 2026
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Blacks Fork Near Millburne, WYVery High5.0 mi · 384 cfs
-
East Fork Smiths Fork Near Robertson, WYVery High11.5 mi · 145 cfs
-
Bear River Near Utah-Wyoming State LineVery High14.3 mi · 370 cfs
-
Middle Fork Beaver Creek Near Lonetree, Wyo.Unknown20.9 mi · 0 cfs
-
Muddy Creek Near Piedmont, WYUnknown22.2 mi · 2 cfs