How high is the Kootenai River at Porthill ID right now?

The Kootenai River at Porthill ID is currently flowing at 30,800 cubic feet per second with a gage height of 51.00 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Kootenai River at Porthill ID normal for this time of year?

Current flow is classified as normal for June 11. Today's discharge is at the 69th percentile compared to the long-term historical record at this gauge.

What is the historical median flow for the Kootenai River at Porthill ID on June 11?

The long-term median discharge for this date is 23,600 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 14,200 to unavailable cfs.

Where is the Kootenai River at Porthill ID stream gauge located?

The Kootenai River at Porthill ID stream gauge is operated by the USGS in Boundary County, ID on the Kootenai River. USGS site number 12322000 (coordinates 48.9964, -116.5075).

Kootenai River at Porthill ID

USGS Site No: 12322000 • Kootenai River • Boundary County, ID

Kootenai River at Porthill ID on the Kootenai River is currently at 30,800 cfs (Normal — 69th percentile for this date) . Gage height: 51.00 ft.

Reading from 1 week ago

↑ Upstream on Kootenai River

Kootenai River at Leonia, ID

30,800

CFS Discharge

51.00

Gage Height (ft)

Normal

Flow Condition

N/A

Flood Status

Historical Percentile Comparison

Today's discharge compared to the long-term record for June 11 at this station. Percentile rank shows what fraction of historical years had lower flow on this date.

Percentile	Label	CFS Threshold	Today's Flow
10th	Very Low threshold	14,200
25th	Low threshold	15,200
50th (Median)	Normal (median)	23,600
75th	High threshold	33,000	Today: 30,800 cfs
95th	Very High threshold	0

30-Day Hydrograph

Recent discharge plotted against the historical 10th–95th percentile envelope for the same calendar days. Source: USGS daily values + long-term statistics.

10th–95th historical Day-of-year median Recent discharge

30-Day Flow History

Date	Discharge (CFS)	Gage Ht (ft)
May 28, 2026	29,000	50.45
May 27, 2026	27,900	49.93
May 26, 2026	19,100	48.34
May 25, 2026	15,800	47.75
May 24, 2026	15,700	47.72
May 23, 2026	15,500	47.75
May 22, 2026	15,700	47.85
May 21, 2026	—	48.00
May 20, 2026	15,900	48.18
May 19, 2026	16,300	48.32
May 18, 2026	17,000	48.54
May 17, 2026	17,600	48.78
May 16, 2026	18,400	49.01
May 15, 2026	19,900	49.24
Apr 20, 2026	25,000	47.16
Apr 19, 2026	25,000	47.18
Apr 18, 2026	25,400	47.26
Apr 17, 2026	26,000	47.36
Apr 16, 2026	26,800	47.45
Apr 15, 2026	26,700	47.37
Apr 14, 2026	26,500	47.22
Apr 13, 2026	26,100	47.08
Apr 12, 2026	25,100	46.94
Apr 11, 2026	24,900	46.84
Apr 10, 2026	24,900	46.82
Apr 9, 2026	25,100	46.85
Apr 8, 2026	25,100	46.85
Apr 7, 2026	24,200	46.78
Apr 6, 2026	24,600	46.70
Apr 5, 2026	24,700	46.73

Station Information

USGS Site No: 12322000
State: ID
County: Boundary County
Coordinates: 48.9964, -116.5075
Drainage Area: 13,700 mi²
Datum (ft): 1,700.0
HUC Code: 17010104

View on USGS NWIS →

Recent Extremes

Max discharge: 43,900 cfs

Dec 12, 2025
Min discharge: 4,260 cfs

Oct 12, 2025

Computed from the local daily-values archive.

Nearby Gauges

Kootenai River at Porthill ID Total Flow
0.3 mi

Unknown
Boundary Creek near Porthill ID
2.8 mi · 490 cfs

Normal
Moyie River at Eastport ID
14.9 mi · 2,090 cfs

Normal
Kootenai River Tribal Hatchery near Bonners Ferry
21.1 mi · 5,070 cfs

Very Low
Kootenai River Bel Moyie River near Bonners Ferry ID
24.9 mi · 31,000 cfs

Normal