Spanish Fork at Castilla, UT
USGS Site No: 10150500 • Spanish Fork • Utah County, UT
Spanish Fork at Castilla, UT on the Spanish Fork is currently at 240 cfs (Very High — 101th percentile for this date) . Gage height: 3.28 ft.
Reading from
Historical Percentile Comparison
Today's discharge compared to the long-term record for October 28 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 | 54 | |
| 25th | Low threshold | 64 | |
| 50th (Median) | Normal (median) | 79 | |
| 75th | High threshold | 108 | |
| 95th | Very High threshold | 148 |
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 | 199 | — |
| May 27, 2026 | 196 | — |
| May 26, 2026 | 190 | — |
| May 25, 2026 | 186 | — |
| May 24, 2026 | 191 | — |
| May 23, 2026 | 205 | — |
| May 22, 2026 | 191 | — |
| May 21, 2026 | 195 | — |
| May 20, 2026 | 204 | — |
| May 19, 2026 | 224 | — |
| May 18, 2026 | 281 | — |
| May 17, 2026 | 289 | — |
| May 16, 2026 | 333 | — |
| May 15, 2026 | 354 | — |
| Apr 20, 2026 | 120 | — |
| Apr 19, 2026 | 122 | — |
| Apr 18, 2026 | 126 | — |
| Apr 17, 2026 | 135 | — |
| Apr 16, 2026 | 128 | — |
| Apr 15, 2026 | 108 | — |
| Apr 14, 2026 | 112 | — |
| Apr 13, 2026 | 112 | — |
| Apr 12, 2026 | 79 | — |
| Apr 11, 2026 | 82 | — |
| Apr 10, 2026 | 82 | — |
| Apr 9, 2026 | 82 | — |
| Apr 8, 2026 | 83 | — |
| Apr 7, 2026 | 84 | — |
| Apr 6, 2026 | 85 | — |
| Apr 5, 2026 | 87 | — |
Station Information
- USGS Site No
- 10150500
- State
- UT
- County
- Utah County
- Coordinates
- 40.0497, -111.5480
- Drainage Area
- 652 mi²
- Datum (ft)
- 4,870.0
- HUC Code
- 16020202
Flood Stage Thresholds
- Action Stage
- 8.5 ft
- Flood Stage
- 9.0 ft
- Moderate Flood
- 10.0 ft
- Major Flood
- 11.0 ft
Currently 5.72 ft below flood stage.
Recent Extremes
- Max discharge
-
437 cfsJun 21, 2025
- Min discharge
-
71 cfsOct 8, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Diamond Fork Below Red Hollow, Near Thistle, UTVery High7.6 mi · 103 cfs
-
Diamond Fork above Red Hollow near Thistle, UTNormal8.9 mi · 38 cfs
-
Hobble Creek at 1650 West at Springville, UtahVery High10.1 mi · 44 cfs
-
Sixth Water Crk above Syar Tun near Springville, UTNormal13.2 mi · 25 cfs
-
Summit Creek above Summit Creek Canal near Santaquin UTLow14.0 mi · 5 cfs