Little Colorado River Below Zion Res Near St. Johns Flow Report
As of July 19, 2026, Little Colorado River Below Zion Res Near St. Johns is flowing at 0 cfs with a gage height of 3.58 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.
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 Res 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 Res Near St. Johns's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Little Colorado R Blw Zion Res Nr St. Johns | 0 cfs |
| Little Colorado River Ab Zion Res Nr St. Johns | 0 cfs |
| Carrizo Wash Nr St. Johns | 0 cfs |
| Little Colorado R Blw Salado Springs | 0 cfs |
| Little Colorado R Abv Lyman Lake Nr St. Johns | 11 cfs |
| Little Colorado River At Woodruff | 182 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near Little Colorado River Below Zion Res 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 | — |
Plan a trip
Reservoirs, boat launches, river runs, and fishing spots within driving distance of Little Colorado River Below Zion Res Near St. Johns.
Boat launches
See all →
River runs
See all →
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 Res 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 Res 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 Res Near St. Johns
Where does the streamflow data for Little Colorado River Below Zion Res 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 Res 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.
Access the free Little Colorado River Below Zion Res Near St. Johns report
Create your free account to track this river — and everything else you love on the water.
- Flow alerts — get pinged the moment this river hits your range
- Save favorites — every river, lake & snowpack in one place
- Full history & forecasts — plus the free iPhone app