Bratten to Holmgren Ranch
Yellowstone River · 17.4 river miles · Reed Point, Montana
At an estimated 1,862 cfs, Bratten to Holmgren Ranch is about 8h 01m of continuous drifting over 17.4 river miles.
Conditions right now
Typical float time by month
Typical flow is estimated by adding the typical flows of the gauges above this stretch, since no gauge measures it directly. Float times are continuous drifting at that flow. Flow by month has the full record.
| Month | Typical flow | Float time |
|---|---|---|
| January | 1,428 cfs | 8h 52m |
| February | 1,405 cfs | 8h 55m |
| March | 1,553 cfs | 8h 35m |
| April | 2,221 cfs | 7h 29m |
| May | 8,049 cfs | 4h 35m |
| June | 15,800 cfs | 3h 33m |
| July | 7,867 cfs | 4h 38m |
| August | 3,490 cfs | 6h 18m |
| September | 2,464 cfs | 7h 12m |
| October | 2,261 cfs | 7h 26m |
| November | 1,960 cfs | 7h 51m |
| December | 1,620 cfs | 8h 27m |
How long it takes at different flows
| Flow | Estimated drift time |
|---|---|
| 1,200 cfs | 9h 28m |
| 2,000 cfs | 7h 48m |
| 3,000 cfs | 6h 41m |
| 5,000 cfs | 5h 30m |
| 8,000 cfs | 4h 36m |
| 12,000 cfs | 3h 56m |
Where this flow number comes from
No USGS gauge measures the Yellowstone at this stretch. The nearest mainstem gauges are Livingston, well upstream, and Billings, downstream; the gauges that once covered this water at Springdale and Big Timber are both inactive. So the figure above is not a reading — it is the sum of the gauges upstream of here:
Checked against the Billings gauge, which sits below every tributary in that sum, over 153 days of last season: mean error +2.6%, typical spread 10%, worst case -23% to +22%. Because water speed rises with roughly the cube root of discharge, a 20% flow error moves the float time by about 7% — inside the range already shown above.
On this stretch
- Indian Fort access, river mile 128.6
Access
Put-in
Bratten
Camping.
Take-out
Holmgren Ranch
Last access above the Stillwater River confluence. Camping.
Measured along the NHDPlus flowline, not straight-line distance.
Shuttle
17.5 miles by road, about 26 minutes driving. The drive is 1.01x the river distance.
Gradient
This reach is gentler than typical for this river, which is why its drift time differs from another stretch of the same length.
Connecting stretches
Start further upstream
- Otter Creek to Bratten 19.9 mi
- Pelican to Bratten 8.4 mi
Other take-outs from Bratten
- Bratten to Indian Fort 4.6 mi
- The estimate does not account for irrigation withdrawal, which in this stretch is substantial in midsummer and removes water the tributary gauges have already counted.
- The velocity curve behind this estimate was measured between Corwin Springs and Livingston. Whether it holds on a channel this far downstream is adjusted for by gradient but not yet confirmed by reported float times here.
Floated this stretch? Tell us how long it took
No name, no email, no account. How reports are used.
Sources
Flow from USGS stream gauges 06192500, 06195600, 06200000, summed: Yellowstone River near Livingston; Shields River near Livingston; Boulder River at Big Timber. River miles from USGS NHDPlus; wind from the National Weather Service; access facts from Montana Fish, Wildlife & Parks. Every source and how the estimate is made · Terms.