Around here
Around Jefferson River
Data Source: Recreation.gov · Public land: USGS PAD-US
About this river
Jefferson River is a 37.6 mile river. Streamflow is measured at the USGS gauge Jefferson River near Twin Bridges, MT (site 06026500). The National Hydrography Dataset places it at stream order 8. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1940 to 2026
Jefferson River typically runs highest in June, at a median 4,470 cfs, and lowest in August, at 557 cfs. The highest flow on record for any single day is 14,900 cfs, in 1997.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 950 | 778 to 1,170 |
| February | 997 | 810 to 1,190 |
| March | 1,130 | 963 to 1,360 |
| April | 1,930 | 1,400 to 2,565 |
| May | 2,910 | 2,100 to 4,200 |
| June | 4,470 | 2,760 to 7,090 |
| July | 1,310 | 745 to 2,130 |
| August | 557 | 352 to 895 |
| September | 734 | 496 to 1,075 |
| October | 1,140 | 900 to 1,450 |
| November | 1,280 | 1,005 to 1,560 |
| December | 1,030 | 828 to 1,310 |
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 Jefferson River near Twin Bridges, MT (site 06026500). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
4 mapped launches sit in the mapped area of Jefferson River, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.
- Hell's CanyonJefferson RiverPublic
- Silver StarJefferson RiverPublic
- Kountz BridgeJefferson RiverPublic
- Mayflower BridgeJefferson RiverPublic
Made to print
Put Jefferson 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 Jefferson 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.
