Around here
Around Tongue River
Data Source: Recreation.gov · Public land: USGS PAD-US
About this river
Tongue River is a 47.1 mile river. Streamflow is measured at the USGS gauge Tongue River at State Line nr Decker MT (site 06306300). The National Hydrography Dataset places it at stream order 7. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1961 to 2026
Tongue River typically runs highest in June, at a median 1,615 cfs, and lowest in August, at 142 cfs. The highest flow on record for any single day is 15,400 cfs, in 1978.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 160 | 130 to 200 |
| February | 186 | 145 to 230 |
| March | 242 | 190 to 325 |
| April | 274 | 218 to 379 |
| May | 784 | 557 to 1,450 |
| June | 1,615 | 802 to 2,425 |
| July | 284 | 176 to 475 |
| August | 142 | 93 to 220 |
| September | 186 | 128 to 255 |
| October | 241 | 188 to 286 |
| November | 207 | 178 to 252 |
| December | 168 | 130 to 206 |
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 66 years of record. Statistics published by the US Geological Survey for Tongue River at State Line nr Decker MT (site 06306300). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Made to print
Put Tongue 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 Tongue 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.
