About this river
Spanish Fork is a 2.7 mile river near Strawberry Bay Marina in Utah. Streamflow is measured at the USGS gauge Spanish Fork at Castilla, UT (site 10150500). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1920 to 2026
Spanish Fork typically runs highest in May, at a median 438 cfs, and lowest in December, at 77 cfs. The highest flow on record for any single day is 3,700 cfs, in 1984.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 80 | 66 to 107 | |
| February | 88 | 71 to 116 | |
| March | 112 | 88 to 159 | |
| April | 197 | 128 to 314 | |
| May | 438 | 302 to 650 | |
| June | 436 | 335 to 530 | |
| July | 410 | 344 to 477 | |
| August | 353 | 269 to 436 | |
| September | 190 | 146 to 236 | |
| October | 81 | 64 to 108 | |
| November | 80 | 65 to 108 | |
| December | 77 | 62 to 107 |
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 100 years of record. Statistics published by the US Geological Survey for Spanish Fork at Castilla, UT (site 10150500). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
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Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Spanish 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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