Boise River Flow Today
As of October 12, 2026 at 1:45 AM, the Boise River is flowing at 383 cfs at Caldwell, ID — 73% of normal for the date and down 5% in 24 hours. 5 of 5 USGS gauges reported in the last 3 days; flows range from 285 to 383 cfs. ❤ Favorite
Boise River map
See the Boise River on a live map
Every gauge, dam and paddle run on the river, one tap each:
- Gauges now — which reaches are high or low
- Dams & paddle runs — storage and what’s in range
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Boise River conditions today
Where the river is running versus normal, what’s rising or dropping, and what it means for a trip — built from the live USGS readings below.
At Caldwell, the Boise River is running 383 cfs — 73% of normal, down 5% since yesterday. Along the river, 2 of 5 reporting gauges are near normal (the typical gauge is at 94% of normal).
In the last 24 hours the river is rising at Twin Springs Id (+13%).
Highest against normal: Eagle Id at 113%. Lowest: Parma Id at 52%.
Paddlers: 0 of 3 runs on the Boise River with a live range are in range, 3 too low.
How the Boise River compares to normal
Every reporting gauge from the top of the river to the bottom: bar length is today’s flow, colour is percent of normal for the date.
Flow along the river, upstream to downstream
- Twin Springs Id3,257 ft 330 cfs94%
- Glenwood Bridge Near Boise Id2,612 ft 333 cfs101%
- Eagle Id2,556 ft 285 cfs113%
- Caldwell2,350 ft 383 cfs73%
- Parma Id2,210 ft 382 cfs52%
Bar length uses a square-root scale so small headwater flows stay visible next to big downstream ones. Colour: <50% 50–90 90–110 110–150 150%+ of normal.
Where every gauge sits
One dot per Boise River streamgauge, placed by its own percent of normal. The line is the typical gauge (94%).
Boise River flow report
| Streamgage | Streamflow | % of normal | 24h | Gage height | To flood stage | Elevation |
|---|---|---|---|---|---|---|
|
Boise River Near Twin Springs Id ID
Oct 12, 1:30 AM · USGS 13185000 |
330 cfs | 94% | +13% | 5.32 ft | · | 3,257 ft |
|
Boise River At Glenwood Bridge Near Boise Id ID
Oct 12, 1:45 AM · USGS 13206000 |
333 cfs | 101% | 0% | 3.51 ft | 3.5 ft below | 2,612 ft |
|
Boise River South Channel At Eagle Id ID
Oct 12, 1:00 AM · USGS 13206305 |
285 cfs | 113% | +2% | 2.76 ft | · | 2,556 ft |
|
Boise River At Caldwell ID
Oct 12, 1:45 AM · USGS 13211205 |
383 cfs | 73% | -5% | 6.01 ft | · | 2,350 ft |
|
Boise River Near Parma Id ID
Oct 12, 1:45 AM · USGS 13213000 |
382 cfs | 52% | -9% | 8.41 ft | · | 2,210 ft |
USGS provisional data. Readings are in each gauge’s local time; gauges silent for more than 3 days are marked “Last reported”. Tap any gauge for its hydrograph, forecast and history.
Paddle runs on the Boise River
Each run is checked against its runnable range using the gauge it is keyed to (or the nearest gauge on this river).
| Run | Status | Flow now | Runnable range | Class |
|---|---|---|---|---|
| Boise Nf Boundary To Confluence With Willow Creek Gauge: Twin Springs Id |
Too low | 330 cfs | 500–5,000 cfs | III–IV |
| Confluence With Granite Creek To Confluence With Pine Creek Gauge: Twin Springs Id |
Too low | 330 cfs | 500–5,000 cfs | III–IV |
| Confluence With Rabbit Creek To Confluence With Middle Fork Boise River Gauge: Twin Springs Id |
Too low | 330 cfs | 500–5,000 cfs | III–IV |
Dams & reservoirs on the Boise River
Releases from these dams shape the flow downstream. Tap one for its daily level and history.
Boise River streamflow over time
Daily total flow across every monitored gauge on the river.
Maximum streamflow by year
Boise River
The Boise River is a 102-mile-long river in Idaho that flows through Boise and empties into the Snake River. The river played a crucial role in the development of the area, as it was used for irrigation and transportation. The river is fed by many tributaries, including the Payette River, and has several major reservoirs, including Lucky Peak, Arrowrock, and Anderson Ranch. These reservoirs were built to store water for irrigation and flood control. The river is also used for recreational activities such as fishing, boating, and rafting. The river provides water for agriculture, helping to sustain crops in the region. Despite challenges related to pollution and development, efforts have been made to preserve and protect the river's natural resources.
About the Boise River
How is the Boise River flowing right now?
As of October 12, 2026, the Boise River is flowing at 383 cfs at Caldwell, ID, about 73% of normal for the date. Across its 5 USGS gauges, current flows range from 285 to 383 cfs. Every gauge’s live reading is in the table above.
Is the Boise River running high or low?
The typical gauge on the Boise River is at 94% of normal for the date. Above 100% means higher than the historical average for this calendar day; below 100% means lower. The profile above shows which reaches are high or low.
What is flood stage on the Boise River?
The National Weather Service sets flood stages for Glenwood Bridge Near Boise Id (7.0 ft), . The table shows how far each gauge is below its flood stage right now.
Is the Boise River runnable for paddling today?
Each run in the paddle table is checked against its runnable range using its gauge's live flow.
Where does the data come from?
Discharge and gage height are from the USGS National Water Information System; flood stages from the National Weather Service. The history chart sums every monitored gauge on the river.
Can I get alerts for a gauge?
Yes — open any gauge from the table, favorite it in the Snoflo app and set a flow threshold.