Little Colorado River Below Zion Reservoir Near St. Johns Flow Report
As of August 8, 2026, Little Colorado River Below Zion Reservoir Near St. Johns is flowing at 0 cfs with a gage height of 3.43 ft. Source: USGS gauge #09386300, refreshed throughout the day.
Historical Data
Engineering Data
Flow-duration statistics and observed peak-flow context computed from this gauge’s complete daily record (USGS #09386300).
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, Little Colorado R Blw Zion Res Nr St. Johns is expected to rise from today's 0 cfs, toward roughly 0 cfs by 2026-08-04 (likely range 0-1 cfs) -- running well below the seasonal normal.
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.
Little Colorado River Below Zion Reservoir Near St. Johns
Johns, AZ stream gauge is an important source of flow data for the Little Colorado River basin, which serves as a critical water resource for the region. The Little Colorado River is fed by several tributaries, including the Puerco River, and is regulated by the Zion Reservoir, which serves as a storage facility for the river's water. The hydrology of the Little Colorado River is influenced by seasonal fluctuations in precipitation, with the highest flows typically occurring during the spring and summer months. The river's water is used for a variety of purposes, including irrigation, municipal water supply, and recreation. One interesting fact about the Little Colorado River is that it is home to several species of endangered fish, including the humpback chub and razorback sucker.
Nearby streamflow levels
Cross-check Little Colorado River Below Zion Reservoir Near St. Johns's discharge against nearby gauges to spot whether the change here is local or regional.
Nearby snowpack data
Snowpack at SNOTEL stations near Little Colorado River Below Zion Reservoir Near St. Johns. 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 |
|---|---|
| Nohrsc Pinetop-Lakeside 4.0 Ese | 0 in |
| Show Low 4.2 S | 0 in |
| Nohrsc Show Low 3.8 W | 0 in |
| Show Low 6.5 Wnw | 0 in |
| Baldy | 0 in |
| Nohrsc Baldy | 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 Little Colorado River Below Zion Reservoir Near St. Johns in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Little Colorado River Below Zion Reservoir Near St. Johns crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Little Colorado River Below Zion Reservoir Near St. Johns
What is the Little Colorado River Below Zion Reservoir Near St. Johns flow rate right now?
As of August 8, 2026, Little Colorado River Below Zion Reservoir Near St. Johns is flowing at 0 cfs. The live value, gage height, and 24-hour trend are shown at the top of this page.
Is the Little Colorado River Below Zion Reservoir Near St. Johns running high or low right now?
Check the percent of median figure on this page: above 100% means Little Colorado River Below Zion Reservoir Near St. Johns 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 Little Colorado River Below Zion Reservoir Near St. Johns come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 09386300. 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 Little Colorado River Below Zion Reservoir Near St. Johns 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 Little Colorado River Below Zion Res Near St. Johns report — flow alerts, favorites, and history & forecasts, plus the free iPhone app.