About this river
San Juan River is a 7.2 mile river near Navajo Lake Marina in New Mexico. Streamflow is measured at the USGS gauge San Juan River near Archuleta, NM (site 09355500). The National Hydrography Dataset places it at stream order 8. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1963 to 2023
San Juan River typically runs highest in June, at a median 877 cfs, and lowest in November, at 498 cfs. The highest flow on record for any single day is 6,420 cfs, in 1965.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 507 | 379 to 945 | |
| February | 511 | 380 to 1,110 | |
| March | 515 | 389 to 1,010 | |
| April | 525 | 475 to 1,285 | |
| May | 630 | 477 to 2,350 | |
| June | 877 | 494 to 3,135 | |
| July | 660 | 501 to 973 | |
| August | 708 | 580 to 880 | |
| September | 667 | 579 to 911 | |
| October | 597 | 479 to 796 | |
| November | 498 | 355 to 637 | |
| December | 511 | 359 to 966 |
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 61 years of record. Statistics published by the US Geological Survey for San Juan River near Archuleta, NM (site 09355500). 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 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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