Boise River near Twin Springs, ID

Southwest & South-Central Idaho · USGS gauge 13185000 · Updated Oct 24, 2:37 PM PDT · USGS data, provisional

All 2 Boise River gauges in Idaho

Fishable/Floatable416 cfs● steady (+2% in 24 h)

Reading time: Oct 24, 2:30 PM PDT · Provisional data

Flow is in a typical range for the date. Rivers are generally easiest to fish and float when they are near their normal flow, but this status says nothing about water clarity, hatches, hazards such as wood in the river, or dam releases.

Vs. normal for this date
67th percentile
Typical range (25th–75th)
326–445 cfs
Median for this date
371 cfs
7-day low / high
296 / 465 cfs

Plain-language explanation

Boise River near Twin Springs is flowing at 416 cubic feet per second (cfs) as of Oct 24, 2:30 PM PDT. That is in the normal range for this time of year: higher than about 67% of the daily flows this gauge has recorded for this date (give or take 7 days) over 116 years of record (1911–2026).

The middle half of those historical flows runs from 326 to 445 cfs, with a median of 371 cfs; the lowest 10% of days are at or below 285 cfs and the highest 10% at or above 523 cfs.

Over the last 24 hours the flow has been steady (+2.2%). In the last 7 days it ranged from 296 to 465 cfs.

Why this status: Flow is within the range this gauge normally sees at this time of year (or the deviation is too small in absolute terms to matter).

Quick answers

Is the Boise River near Twin Springs fishable today?

Flowcast's status for the Boise River near Twin Springs is “Fishable/Floatable”: flow is 416 cfs, within the range this gauge normally sees at this time of year, at the 67th percentile for this date (as of Oct 24, 2:30 PM PDT). That describes flow only. It says nothing about water clarity, temperature, fish activity, access or fishing regulations.

What is the current flow of the Boise River near Twin Springs?

416 cubic feet per second at USGS gauge 13185000 as of Oct 24, 2:30 PM PDT, provisional data.

Is the Boise River near Twin Springs too high or too low right now?

Neither: it is inside the typical range for the date (326 to 445 cfs).

Is the Boise River near Twin Springs rising or falling?

Over the last 24 hours the flow has been steady (+2.2%).

What is a normal flow for the Boise River near Twin Springs in October?

For this date (give or take 7 days) the median is 371 cfs and the middle half of days runs 326 to 445 cfs, over 116 years of USGS record.

7-day trend

typical range for this date (25th-75th pct)271326380435490Sun 10/18Mon 10/19Tue 10/20Wed 10/21Thu 10/22Fri 10/23Sat 10/24

Hourly flow in cfs, Pacific time. The shaded band is the typical range (25th–75th percentile) for this date, shown when it falls within the chart.

Day (Pacific)Mean cfsPercentileStatus that day
Sun Oct 1830419thFishable/Floatable
Mon Oct 1930218thFishable/Floatable
Tue Oct 2030117thFishable/Floatable
Wed Oct 2130117thFishable/Floatable
Thu Oct 2230718thFishable/Floatable
Fri Oct 2338657thFishable/Floatable
Sat Oct 24 (so far)44575thFishable/Floatable

Seasonal context

1002005001,0002,0005,00010,000JanFebMarAprMayJunJulAugSepOctNovDec

Shaded band: 10th–90th percentile of daily flows through the year; dashed line: median. Log scale. Dot: today's flow. Based on 116 years of USGS daily data (1911–2026).

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Official resources

Links go to the agencies' own websites and were checked as working. Flowcast does not summarize fishing or boating rules: regulations and closures change, and the agency pages are the authority.

About this gauge

USGS site
USGS-13185000
USGS name
Boise River Nr Twin Springs Id
Drainage area
832 sq mi
Location
43.6681, -115.7253
Record in this analysis
1911–2026
Data from the U.S. Geological Survey (USGS). Readings are provisional and subject to revision. Flowcast statuses are automated comparisons with each gauge's own history, not safety ratings or fishing reports. Check local conditions, weather, regulations and closures before you go. Rivers can change quickly.

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