Idaho rivers rising or falling now
Of the 25 gauges in Idaho, 2 are rising, 1 falling and 22 steady over the last 24 hours.
Updated Oct 29, 7:41 PM PDT · USGS data, provisional
All 25 Idaho gauges by 24-hour change
| River | 24 h change | Trend | Flow now | Status |
|---|---|---|---|---|
| Coeur d'Alene River near Cataldo, ID | +11% | ▲ rising | 423 cfs | Fishable/Floatable |
| Clearwater River at Spalding, ID | +10% | ▲ rising | 4,010 cfs | Fishable/Floatable |
| Lemhi River near Lemhi, ID | +6% | ● steady | 197 cfs | Fishable/Floatable |
| Boise River at Glenwood Bridge, near Boise, ID | +3% | ● steady | 239 cfs | Fishable/Floatable |
| Snake River near Heise, ID | +1% | ● steady | 2,040 cfs | Fishable/Floatable |
| Henrys Fork near Ashton, ID | 0% | ● steady | 622 cfs | Too low |
| Snake River at Neeley, ID | 0% | ● steady | 304 cfs | Too low |
| Snake River near Irwin, ID | 0% | ● steady | 1,450 cfs | Fishable/Floatable |
| Pahsimeroi River at Ellis, ID | -0.5% | ● steady | 207 cfs | Fishable/Floatable |
| North Fork Payette River near Banks, ID | -0.8% | ● steady | 253 cfs | Fishable/Floatable |
| Henrys Fork at St. Anthony, ID | -0.9% | ● steady | 1,070 cfs | Fishable/Floatable |
| Salmon River at White Bird, ID | -2% | ● steady | 4,170 cfs | Fishable/Floatable |
| Salmon River near Shoup, ID | -2% | ● steady | 1,730 cfs | Fishable/Floatable |
| Big Wood River at Hailey (total flow), ID | -2% | ● steady | 166 cfs | Fishable/Floatable |
| Silver Creek at Sportsman Access, near Picabo, ID | -2% | ● steady | 93.2 cfs | Fishable/Floatable |
| Henrys Fork near Island Park, ID | -2% | ● steady | 84.3 cfs | Too low |
| Salmon River at Salmon, ID | -2% | ● steady | 1,200 cfs | Fishable/Floatable |
| Middle Fork Salmon River at Middle Fork Lodge, near Yellow Pine, ID | -3% | ● steady | 522 cfs | Fishable/Floatable |
| South Fork Clearwater River at Stites, ID | -3% | ● steady | 225 cfs | Fishable/Floatable |
| Boise River near Twin Springs, ID | -3% | ● steady | 334 cfs | Fishable/Floatable |
| Teton River above South Leigh Creek, near Driggs, ID | -4% | ● steady | 195 cfs | Fishable/Floatable |
| South Fork Boise River at Anderson Ranch Dam, ID | -5% | ● steady | 295 cfs | Fishable/Floatable |
| Teton River near St. Anthony, ID | -5% | ● steady | 373 cfs | Too low |
| St. Joe River at Calder, ID | -7% | ● steady | 494 cfs | Fishable/Floatable |
| Lochsa River near Lowell, ID | -21% | ▼ falling | 576 cfs | Fishable/Floatable |
By region
| Region (Idaho gauges only) | Rising | Falling | Steady | Gauges |
|---|---|---|---|---|
| Eastern Idaho: Henrys Fork & Snake River | 0 | 0 | 8 | 8 |
| Salmon River Country (Idaho) | 0 | 0 | 6 | 6 |
| North Idaho: Clearwater, St. Joe & Coeur d'Alene | 2 | 1 | 2 | 5 |
| Southwest & South-Central Idaho | 0 | 0 | 6 | 6 |
How this is worked out: for each gauge Flowcast compares the latest USGS flow reading with the reading closest to 24 hours earlier (it must be within 3 hours of that time). A change of +10% or more is labelled rising, −10% or more falling, and anything in between steady. “n/a” means there was no current reading or no reading near 24 hours earlier. USGS readings are provisional. This describes the last 24 hours only; it is not a forecast, and dam releases can change flow on regulated rivers at any time.
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