About this river
Gunnison River is a 10.3 mile river near Black Canyon Anglers in Colorado. Streamflow is measured at the USGS gauge Gunnison River at Delta, CO (site 09144250). The National Hydrography Dataset places it at stream order 8. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1976 to 2026
Gunnison River typically runs highest in May, at a median 3,390 cfs, and lowest in February, at 939 cfs. The highest flow on record for any single day is 20,300 cfs, in 1984.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 979 | 592 to 1,740 | |
| February | 939 | 658 to 1,700 | |
| March | 1,040 | 760 to 1,990 | |
| April | 1,760 | 950 to 2,820 | |
| May | 3,390 | 1,650 to 5,840 | |
| June | 2,355 | 1,033 to 5,535 | |
| July | 1,080 | 771 to 1,640 | |
| August | 1,020 | 715 to 1,290 | |
| September | 971 | 723 to 1,320 | |
| October | 949 | 696 to 1,370 | |
| November | 942 | 613 to 1,525 | |
| December | 992 | 578 to 1,880 |
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 50 years of record. Statistics published by the US Geological Survey for Gunnison River at Delta, CO (site 09144250). 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 Gunnison 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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