About this river
Surplus Canal is a 3.4 mile river near Canyon Sports in Utah. Streamflow is measured at the USGS gauge Surplus Canal @ Salt Lake City, UT (site 10170500). The National Hydrography Dataset places it at stream order 7. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1944 to 2026
Surplus Canal typically runs highest in May, at a median 418 cfs, and lowest in January, at 134 cfs. The highest flow on record for any single day is 4,250 cfs, in 1984.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 134 | 99 to 321 | |
| February | 180 | 108 to 563 | |
| March | 248 | 134 to 604 | |
| April | 304 | 142 to 644 | |
| May | 418 | 273 to 719 | |
| June | 381 | 257 to 832 | |
| July | 195 | 151 to 300 | |
| August | 197 | 153 to 252 | |
| September | 210 | 166 to 272 | |
| October | 189 | 131 to 255 | |
| November | 134 | 108 to 195 | |
| December | 135 | 103 to 221 |
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 82 years of record. Statistics published by the US Geological Survey for Surplus Canal @ Salt Lake City, UT (site 10170500). 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 Surplus Canal'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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