How high is the Henrys Fork near Island Park ID right now?

The Henrys Fork near Island Park ID is currently flowing at 612 cubic feet per second with a gage height of 3.17 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Henrys Fork near Island Park ID normal for this time of year?

Current flow is classified as high for October 28. Today's discharge is at the 81th percentile compared to the long-term historical record at this gauge.

What is the historical median flow for the Henrys Fork near Island Park ID on October 28?

The long-term median discharge for this date is 382 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 77 to 844 cfs.

Where is the Henrys Fork near Island Park ID stream gauge located?

The Henrys Fork near Island Park ID stream gauge is operated by the USGS in Fremont County, ID on the Henrys Fork. USGS site number 13042500 (coordinates 44.4167, -111.3947).

Henrys Fork near Island Park ID

USGS Site No: 13042500 • Henrys Fork • Fremont County, ID

Henrys Fork near Island Park ID on the Henrys Fork is currently at 612 cfs (High — 81th percentile for this date) . Gage height: 3.17 ft.

Reading from 4 months ago

↑ Upstream on Henrys Fork

Henrys Fork near Lake ID

Downstream on Henrys Fork ↓

Henrys Fork near Ashton ID

612

CFS Discharge

3.17

Gage Height (ft)

High

Flow Condition

N/A

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	Today's Flow
10th	Very Low threshold	77
25th	Low threshold	171
50th (Median)	Normal (median)	382
75th	High threshold	513
95th	Very High threshold	844	Today: 612 cfs

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	594	—
May 27, 2026	656	—
May 26, 2026	728	—
May 25, 2026	715	—
May 24, 2026	718	—
May 23, 2026	726	—
May 22, 2026	738	—
May 21, 2026	705	—
May 20, 2026	587	—
May 19, 2026	497	—
May 18, 2026	412	—
May 17, 2026	284	—
May 16, 2026	278	—
May 15, 2026	275	—
Apr 20, 2026	177	—
Apr 19, 2026	183	—
Apr 18, 2026	190	—
Apr 17, 2026	193	—
Apr 16, 2026	192	—
Apr 15, 2026	191	—
Apr 14, 2026	192	—
Apr 13, 2026	190	—
Apr 12, 2026	186	—
Apr 11, 2026	180	—
Apr 10, 2026	180	—
Apr 9, 2026	178	—
Apr 8, 2026	180	—
Apr 7, 2026	185	—
Apr 6, 2026	186	—
Apr 5, 2026	194	—

Station Information

USGS Site No: 13042500
State: ID
County: Fremont County
Coordinates: 44.4167, -111.3947
Drainage Area: 501 mi²
Datum (ft): 6,227.5
HUC Code: 17040202

View on USGS NWIS →

Recent Extremes

Max discharge: 1,600 cfs

Jun 29, 2025
Min discharge: 79 cfs

Oct 10, 2025

Computed from the local daily-values archive.

Nearby Gauges

Henrys Fork near Lake ID
12.5 mi · 20 cfs

Normal
Red Rock Creek above Lakes, near Lakeview, Mount
17.9 mi · 64 cfs

Very High
Madison River Near West Yellowstone, Mount
23.1 mi · 479 cfs

High
Henrys Fork near Ashton ID
24.6 mi · 1,260 cfs

Normal
Fall River near Ashton ID
25.0 mi · 1,150 cfs

Very High