About this river
Saint Joe River is a 5.5 mile river near ROW Adventures in Idaho. Streamflow is measured at the USGS gauge ST Joe River at Ramsdell near ST Maries ID (site 12415135). The National Hydrography Dataset places it at stream order 7. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
2010 to 2025
Saint Joe River typically runs highest in May, at a median 7,960 cfs, and lowest in September, at 481 cfs. The highest flow on record for any single day is 30,400 cfs, in 2017.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 1,380 | 925 to 2,300 | |
| February | 1,810 | 1,120 to 3,580 | |
| March | 4,680 | 2,170 to 5,530 | |
| April | 6,025 | 4,360 to 8,940 | |
| May | 7,960 | 5,510 to 10,700 | |
| June | 3,060 | 2,310 to 5,595 | |
| July | 1,370 | 1,110 to 1,720 | |
| August | 790 | 575 to 939 | |
| September | 481 | 375 to 602 | |
| October | 520 | 435 to 648 | |
| November | 832 | 607 to 1,375 | |
| December | 1,120 | 690 to 1,900 |
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 16 years of record. Statistics published by the US Geological Survey for ST Joe River at Ramsdell near ST Maries ID (site 12415135). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
3 mapped launches sit in the mapped area of Saint Joe River, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.
- Benewah LakeBenewah LakePublic
- Rocky PointChatcolet LakePublic
- Round Lake - O'Gara Bay RoadRound LakePublic
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Saint Joe 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.
