Snake River Near Heise Flow Report
As of August 10, 2026, Snake River Near Heise is flowing at 12,800 cfs with a gage height of 5.89 ft, holding steady over the past 24 hours. Source: USGS gauge #13037500, refreshed throughout the day.
Historical Data
Snake River Near Heise at a glance
How Snake River Near Heise is running right now, where it sits on the map, and the key gauge stats.
Snake River Near Heise is flowing at 12,800 cfs, with the water sitting 5.89 ft at the gage. Flow has held roughly steady over the past 24 hours.
This is USGS gauge #13037500 in Idaho. Over the past 10 days the average has been 11,540 cfs, peaking at 12,900 cfs.
For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the Idaho flow report.
Engineering Data
Flow-duration statistics and observed peak-flow context computed from this gauge’s complete daily record (USGS #13037500).
Estimate flows at an ungauged site
Drainage-area ratio transfer from this gauge . Most reliable for hydrologically similar sites in the same watershed with area ratios between roughly 0.5 and 1.5.
Percentiles are flow-duration values computed from this gauge’s observed daily record as archived by Snoflo. Return periods are Weibull plotting-position estimates from observed annual maxima, provided as general reference context only. Always verify against official USGS NWIS records. Part of Snoflo for Engineering.
Streamflow Forecast
Over the next 5 days, Snake River Nr Heise Id is expected to hold near today's 12900 cfs, toward roughly 12598 cfs by 2026-08-14 (likely range 10529-15073 cfs) -- about normal for the date.
Powered by PULSE — Snoflo’s forecast engine, trained on this gauge’s full record of storms, snowmelt, and dry spells.
| Date | Expected (p50) | Likely range (p25–p75) | vs normal | Projected stage |
|---|
How does this compare to past years?
Year-over-year overlay, annual peak discharge, the full distribution of daily flows on record, and the gauge's rating curve.
Weather Forecast
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day forecast
Daily temperatures, snow, and rain projected over the next two weeks.
Snake River Near Heise
The river is fed by multiple tributaries and has several dams along its course. The flow is influenced by seasonal changes, with higher flows in the spring and lower flows in the summer and fall. Interestingly, the Snake River is home to several species of fish, including trout and salmon, and is a popular destination for recreational activities such as fishing and boating. The hydrology of the river is complex and influenced by many factors, making it an important area of study for students interested in water resources and environmental science.
Nearby streamflow levels
Cross-check Snake River Near Heise's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Snake River Near Heise Id | 12,800 cfs |
| Dry Bed Near Ririe Id | 2,110 cfs |
| Willow Creek Near Ririe Id | 65 cfs |
| Sand Creek Above Willow Creek Diversion Near Ucon Id | 333 cfs |
| Willow Creek Below Tex Creek Near Ririe Id | 5 cfs |
| Willow Creek Floodway Channel Near Ucon Id | 72 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near Snake River Near Heise. Spring snowmelt is the dominant driver of streamflow in mountain basins -- a deep snowpack upstream means more runoff later in the season.
| SNOTEL station | Snowpack |
|---|---|
| Idaho Falls 11.7 Ne | 0 in |
| Nohrsc Rigby 1.8 Ne | 0 in |
| Nohrsc Sugar City 1.9 S | 0 in |
| Menan 4 Nne | 0 in |
| Idaho Falls | 0 in |
| Swan Valley | 0 in |
River levels & flood safety
- Read the level before you go
- A river that's runnable at one flow can be deadly at another. Check current discharge and gage height — like the values shown above — against the flood-stage thresholds, and remember levels can spike fast after rain or a dam release.
- Respect cold water
- Snowmelt rivers run cold even in summer. Sudden immersion triggers cold-water shock and saps strength within minutes. Wear a PFD, dress for the water temperature (not the air), and never wade or paddle alone.
- Watch for swiftwater hazards
- Strainers (downed trees), undercut rocks, and low-head dams are the deadliest features on moving water. High, fast, muddy water hides them. If in doubt, scout from shore and portage.
- Mind flash floods & releases
- Narrow canyons can flood from a storm miles upstream, and dam-controlled reaches can rise without warning. Know the forecast, the release schedule, and your exit before you launch.
Track Snake River Near Heise in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Snake River Near Heise crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Snake River Near Heise
What is the Snake River Near Heise flow rate right now?
As of August 10, 2026, Snake River Near Heise is flowing at 12,800 cfs. The live value, gage height, and 24-hour trend are shown at the top of this page.
Is the Snake River Near Heise running high or low right now?
Check the percent of median figure on this page: above 100% means Snake River Near Heise is running higher than normal for the date, below 100% means lower. The 24-hour trend shows whether it's rising or falling.
Where does the streamflow data for Snake River Near Heise come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 13037500. Snoflo refreshes the time series throughout the day. Forecasts come from the NOAA / yr.no feed Snoflo's iOS app uses.
How often is the report updated?
USGS gauges report continuously (typically every 15 minutes). Snoflo pulls fresh values throughout the day — look for the "as of" timestamp on the streamflow hero card.
What's the difference between discharge and gage height?
Discharge (cubic feet per second, or cfs) is the volume of water flowing past the gauge each second. Gage height is how high the water sits at the gauge (feet). They're related by a rating curve specific to each gauge — higher water means more flow, but the exact ratio depends on channel shape.
How is "percent of median" calculated?
Today's discharge is compared to the historical median discharge on this calendar day across the gauge's full record. 100% = right on median; 200% = a very high year; 30% = a drought-level low.
What are flood stages, and is this river safe right now?
Flood stages are NWS-defined gage-height thresholds — Action, Minor, Moderate, Major — marking when nearby roads or floodplains start to be affected. "Safe" depends on your activity and skill: a level that's a fun paddle for an expert can be lethal for a wader. Always check the current level against the thresholds above and the safety links, and when in doubt, stay off the water.
Can I get alerts when Snake River Near Heise rises?
Yes — flow alerts are managed in the Snoflo iOS app. Favorite this gauge, set a streamflow threshold (e.g. "alert me when discharge crosses 5,000 cfs"), and you'll get a push the moment USGS reports the crossing.
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Get the free Snake River Near Heise report — flow alerts, favorites, and history & forecasts, plus the free iPhone app.