Mission Creek Above Reservoir Near St Ignatius Flow Report
As of July 25, 2026, Mission Creek Above Reservoir Near St Ignatius is flowing at 111 cfs with a gage height of 2.24 ft. Source: USGS gauge #12377150, refreshed throughout the day.
Historical Data
Mission Creek Above Reservoir Near St Ignatius at a glance
How Mission Creek Above Reservoir Near St Ignatius is running right now, where it sits on the map, and the key gauge stats.
Mission Creek Above Reservoir Near St Ignatius is flowing at 111 cfs, with the water sitting 2.24 ft at the gage.
This is USGS gauge #12377150 in Montana. Over the past 10 days the average has been 129 cfs, peaking at 159 cfs.
For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the Montana flow report.
Engineering Data
Flow-duration statistics and observed peak-flow context computed from this gauge’s complete daily record (USGS #12377150).
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, Mission Cr Ab Reservoir Nr St Ignatius Mt is expected to recede from today's 111 cfs, toward roughly 84 cfs by 2026-07-30 (likely range 53-133 cfs) -- drier than 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.
Mission Creek Above Reservoir Near St Ignatius
Ignatius, MT stream gauge measures flow rates in the Jocko River, the primary source of water for the Flathead Indian Reservation. The Jocko River is fed by various tributaries and flows into the Flathead River, which eventually empties into Flathead Lake. Seasonal trends show peak flows in the spring due to snowmelt and decreased flows in the fall and winter. The hydrology of the area is important for irrigation, recreation, and maintaining ecosystem health. The CR AB Reservoir was built in 1923 and provides water for irrigation, but has also resulted in the loss of habitat for aquatic species.
Nearby streamflow levels
Cross-check Mission Creek Above Reservoir Near St Ignatius's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Mission Creek Above Reservoir Near St Ignatius Mount | 111 cfs |
| South Fork Jocko River Near Arlee Mount | 54 cfs |
| South Crow Creek Near Ronan Mount | 9 cfs |
| Flathead River Near Polson Mount | 8,840 cfs |
| Flathead River At Perma Mount | 9,240 cfs |
| Clark Fork Above Missoula Mount | 2,060 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near Mission Creek Above Reservoir Near St Ignatius. 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 |
|---|---|
| North Fork Jocko | 0 in |
| North Fork Jocko | 0 in |
| Nohrsc Kraft Creek | 0 in |
| Kraft Creek | 0 in |
| Ronan 4.1 Ne | 0 in |
| Sleeping Woman | 0 in |
Plan a trip
Reservoirs, boat launches, river runs, and fishing spots within driving distance of Mission Creek Above Reservoir Near St Ignatius.
Nearby reservoirs
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Boat launches
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River runs
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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 Mission Creek Above Reservoir Near St Ignatius in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Mission Creek Above Reservoir Near St Ignatius crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Mission Creek Above Reservoir Near St Ignatius
What is the Mission Creek Above Reservoir Near St Ignatius flow rate right now?
As of July 25, 2026, Mission Creek Above Reservoir Near St Ignatius is flowing at 111 cfs. The live value, gage height, and 24-hour trend are shown at the top of this page.
Is the Mission Creek Above Reservoir Near St Ignatius running high or low right now?
Check the percent of median figure on this page: above 100% means Mission Creek Above Reservoir Near St Ignatius 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 Mission Creek Above Reservoir Near St Ignatius come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 12377150. 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 Mission Creek Above Reservoir Near St Ignatius 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 Mission Creek Above Reservoir Near St Ignatius report
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