How high is the Salmon River at Salmon ID right now?

The Salmon River at Salmon ID is currently flowing at 4,600 cubic feet per second with a gage height of 4.58 feet, based on the most recent USGS instantaneous reading.

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

Current flow is classified as very high for October 28. Today's discharge is at the 112th percentile compared to the long-term historical record at this gauge.

Is the Salmon River at Salmon ID at flood stage?

No — the gage height is 2.92 feet below the NWS flood-stage threshold of 7.5 feet.

What is the historical median flow for the Salmon River at Salmon ID on October 28?

The long-term median discharge for this date is 1,310 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 954 to 1,720 cfs.

Where is the Salmon River at Salmon ID stream gauge located?

The Salmon River at Salmon ID stream gauge is operated by the USGS in Lemhi County, ID on the Salmon River. USGS site number 13302500 (coordinates 45.1836, -113.8953).

Salmon River at Salmon ID

USGS Site No: 13302500 • Salmon River • Lemhi County, ID

Salmon River at Salmon ID on the Salmon River is currently at 4,600 cfs (Very High — 112th percentile for this date) . Gage height: 4.58 ft.

Reading from 4 months ago

↑ Upstream on Salmon River

Salmon River above East Fork near Clayton ID

Downstream on Salmon River ↓

Salmon River near Shoup ID

4,600

CFS Discharge

4.58

Gage Height (ft)

Very High

Flow Condition

Normal

Flood Status

Historical Percentile Comparison

Today's discharge compared to the long-term record for October 28 at this station. Percentile rank shows what fraction of historical years had lower flow on this date.

Percentile	Label	CFS Threshold
10th	Very Low threshold	954
25th	Low threshold	1,140
50th (Median)	Normal (median)	1,310
75th	High threshold	1,510
95th	Very High threshold	1,720

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	4,370	—
May 26, 2026	3,570	—
May 25, 2026	3,150	—
May 24, 2026	2,940	—
May 23, 2026	2,930	—
May 22, 2026	3,010	—
May 18, 2026	4,270	—
May 17, 2026	4,710	—
May 16, 2026	5,100	—
May 15, 2026	5,590	—
Apr 20, 2026	2,180	—
Apr 19, 2026	2,290	—
Apr 18, 2026	2,410	—
Apr 17, 2026	2,640	—
Apr 16, 2026	2,720	—
Apr 14, 2026	3,010	—
Apr 13, 2026	3,150	—
Apr 12, 2026	3,090	—
Apr 11, 2026	2,820	—
Apr 10, 2026	2,650	—
Apr 9, 2026	2,600	—
Apr 8, 2026	2,460	—
Apr 7, 2026	2,320	—
Apr 6, 2026	2,320	—
Apr 5, 2026	2,390	—
Apr 4, 2026	2,470	—
Apr 3, 2026	2,670	—
Apr 2, 2026	2,800	—
Apr 1, 2026	2,760	—
Mar 31, 2026	2,640	—

Station Information

USGS Site No: 13302500
State: ID
County: Lemhi County
Coordinates: 45.1836, -113.8953
Drainage Area: 3,737 mi²
Datum (ft): 3,915.0
HUC Code: 17060203

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 7.0 ft
Flood Stage: 7.5 ft
Moderate Flood: 8.5 ft
Major Flood: 9.5 ft

Currently 2.92 ft below flood stage.

Recent Extremes

Max discharge: 6,120 cfs

May 12, 2025
Min discharge: 647 cfs

Aug 25, 2025
Days at flood stage: 0

Computed from the local daily-values archive.

Nearby Gauges

Lemhi River Below L5 Diversion Near Salmon, ID
5.9 mi · 152 cfs

Low
Napias Creek Below Arnett Creek Near Leesburg, ID
11.7 mi · 57 cfs

Very High
Nf Salmon River at North Fork ID
16.2 mi · 0 cfs

Unknown
Panther Creek at Cobalt, ID
17.9 mi · 172 cfs

Very High
Lemhi River near Lemhi ID
21.0 mi · 239 cfs

Normal