Around here
Around Ruby River
Data Source: Recreation.gov · Public land: USGS PAD-US
About this river
Ruby River is a 62.1 mile river. Streamflow is measured at the USGS gauge Ruby River below reservoir near Alder, MT (site 06020600). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1963 to 2025
Ruby River typically runs highest in June, at a median 464 cfs, and lowest in February, at 43 cfs. The highest flow on record for any single day is 2,500 cfs, in 1984.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 44 | 31 to 58 |
| February | 43 | 32 to 56 |
| March | 44 | 33 to 61 |
| April | 57 | 40 to 116 |
| May | 404 | 259 to 555 |
| June | 464 | 350 to 721 |
| July | 321 | 282 to 376 |
| August | 334 | 297 to 386 |
| September | 240 | 208 to 281 |
| October | 77 | 55 to 128 |
| November | 61 | 44 to 82 |
| December | 45 | 33 to 66 |
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 63 years of record. Statistics published by the US Geological Survey for Ruby River below reservoir near Alder, MT (site 06020600). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Made to print
Put Ruby River on your wall
This river section as an art print, drawn over the real terrain with its miles, plus the trails, roads and peaks around it. Pick the colors and the size, and see the finished print before you buy. From $39, shipping included.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Ruby River'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.
