About this river
Ashley Upper Canal is an 8.2 mile canal near Dinosaur River Expeditions in Utah. Streamflow is measured at the USGS gauge Ashley CR near Remember the Maine Park near Vernal, UT (site 09271000). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1939 to 2026
Ashley Upper Canal typically runs highest in May, at a median 357 cfs, and lowest in March, at 23 cfs. The highest flow on record for any single day is 2,900 cfs, in 1965.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 28 | 22 to 31 | |
| February | 24 | 20 to 28 | |
| March | 23 | 19 to 27 | |
| April | 27 | 22 to 42 | |
| May | 357 | 160 to 540 | |
| June | 309 | 167 to 615 | |
| July | 132 | 91 to 181 | |
| August | 82 | 50 to 117 | |
| September | 60 | 40 to 88 | |
| October | 49 | 34 to 64 | |
| November | 35 | 28 to 48 | |
| December | 30 | 24 to 38 |
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 28 years of record. Statistics published by the US Geological Survey for Ashley CR near Remember the Maine Park near Vernal, UT (site 09271000). 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 Ashley Upper Canal's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
See every free widget you can put on your site, including live conditions and a 7 day forecast.
