Henrys Fork near Island Park

Last updated: Jul 20, 2025, 9:26 PM UTC
No watches, warnings or advisories are in effect for this area.

Gauge Info

Coordinates 44.4164, -111.395
RFC NWRFC
State ID
WFO PIH
County Fremont
Data Provider(s)
US Geological Survey USGS--Water Resources of the United States
USGS 13042500

Gauge Location

Recent Crests

1. 4.66 ft on 07-06-2022
2. 4.78 ft on 07-08-2021
3. 5.02 ft on 05-01-2020
4. 5.18 ft on 05-01-2019
5. 5.00 ft on 04-25-2018

Historic Crests

1. 6.15 ft on 04-26-1946
2. 6.06 ft on 05-23-1984
3. 5.96 ft on 06-01-1943
4. 5.87 ft on 07-18-1955
5. 5.85 ft on 08-26-1983

Low Water Records

(P) -  Preliminary values subject to further review
¹ -  Gauge datum changed during this year

Vertical Datum Table

type NGVD29
major Flooding N/A
moderate Flooding N/A
minor Flooding N/A
action N/A
Latest Value 6229.32 ft
Gauge Zero 6225.00 ft

Gauge Photos

No Images Found

Probability Information

No Images Available

Unique Local Info

Historical Peak Flows     (Scroll to Streamflow Statistics for more years)
USGS Historical Peak Flows Explanation
Gage Analysis 

25   Year Peak Flood 2660 CFS or 6.08 ft
50   Year Peak Flood 2800 CFS or 6.26 ft
100 Year Peak Flood 2920 CFS or 6.40 ft
200 Year Peak Flood 3040 CFS
500 Year Peak Flood 3180 CFS

Collaborative Agencies

The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.

WFO Information

Weather Forecast Office
Pocatello
1945 Beechcraft Ave
Pocatello, ID 83204
Official Homepage