River Conditions

"Eventually, all things merge into one, and a river runs through it."

- Norman Maclean

Planning your fishing day? Follow the links below for up-to-date information on river flows, how full the reservoirs are, water temperature, oxygen levels, turbidity and more.

If you're looking for Fishing Reports, click below or visit these local outfitters and shops for fishing reports and current information about fishing conditions.

LIVE River

Conditions

Water Temperatures | Turbidity (Water Clarity) | Oxygen

Looking for information on water temperatures or turbidity (cloudiness of the river) in real-time? Find data collected by HFF’s water quality monitoring network on the Henry’s Fork and South Fork. Plus, trout thresholds to show if temperatures and oxygen levels are optimal, stressful, or lethal for trout.

View Data

Current River Streamflows

River Flows | Streamflows | CFS

COMING SOON: Real-time access to water supply predictions plus streamflow, climate, hydrologic, and water-management data. Made possible by a USBR WaterSMART Applied Science Grant. Until this new tool is launched, receive daily email reports on river flows, or weekly river updates, or view USGS gage data.

View Data

Henry's Fork Hatch Timing

Aquatic Insects | Hatch Timing | Henry's Fork

Check out HFF's new Hatch Timing Website to see how aquatic insect emergence is lining up compared to average at different points along the river.

Hatch Timing

USBR Reservoir

Data

Reservoirs | Water Supply | Island Park Dam

How much water is currently in eastern Idaho's reservoir system? The U.S. Bureau of Reclamation (USBR) "teacup" diagram shows current reservoir levels across the Upper Snake River Basin.

View Data

Harriman Ranch Water Temperatures

Harriman State Park | The "Ranch" | Water Temperatures

Anglers helped select locations throughout the Ranch that would be most crucial to monitor. Water temperature data is updated every week for 17 locations in the Harriman "Ranch" reach.