San Juan River in Utah
Around here
Around San Juan River
Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US
About this river
San Juan River is a 40.9 mile river. Streamflow is measured at the USGS gauge San Juan River near Bluff, UT (site 09379500). The National Hydrography Dataset places it at stream order 9. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1915 to 2026
San Juan River typically runs highest in June, at a median 4,125 cfs, and lowest in January, at 796 cfs. The highest flow on record for any single day is 52,000 cfs, in 1927.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 796 | 585 to 1,120 |
| February | 914 | 676 to 1,540 |
| March | 1,170 | 763 to 1,980 |
| April | 1,735 | 866 to 3,970 |
| May | 3,470 | 1,610 to 6,240 |
| June | 4,125 | 1,965 to 7,315 |
| July | 1,180 | 620 to 2,430 |
| August | 1,020 | 556 to 1,790 |
| September | 892 | 545 to 1,710 |
| October | 957 | 662 to 1,630 |
| November | 889 | 693 to 1,215 |
| December | 801 | 617 to 1,080 |
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 102 years of record. Statistics published by the US Geological Survey for San Juan River near Bluff, UT (site 09379500). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
2 mapped launches sit in the mapped area of San Juan River, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show San Juan River'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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