Annie Spring Near Crater Lake Flow Report
As of August 20, 2026, Annie Spring Near Crater Lake is flowing at 1 cfs. Source: USGS gauge #11503000, refreshed throughout the day.
Historical Data
Annie Spring Near Crater Lake at a glance
How Annie Spring Near Crater Lake is running right now, where it sits on the map, and the key gauge stats.
Annie Spring Near Crater Lake is flowing at 1 cfs, with the water sitting 2.35 ft at the gage.
This is USGS gauge #11503000 in Oregon. Over the past 10 days the average has been 1 cfs, peaking at 1 cfs.
For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the Oregon flow report.
Engineering Data
Flow-duration statistics and observed peak-flow context computed from this gauge’s complete daily record (USGS #11503000).
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.
Annie Spring Near Crater Lake
The Annie Spring Near Crater Lake streamgauge is part of the USGS streamflow monitoring network and provides continuous discharge data for Oregon. The gauge measures water flowing past a fixed point on the river, with readings updated every 15 minutes.
Streamflow at this site varies seasonally with snowmelt runoff, rainfall, upstream reservoir operations, and groundwater contributions. The peak-flow season typically corresponds to spring snowmelt in mountain basins, with secondary peaks from intense rainfall events.
Nearby streamflow levels
Cross-check Annie Spring Near Crater Lake's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| South Fork Rogue River Near Prospect | 36 cfs |
| Rogue River Above Prospect | 811 cfs |
| Williamson River Near Klamath Agency | 0 cfs |
| Rogue River Below Prospect | 518 cfs |
| Sevenmile Cnl At Dike Rd Branch | 45 cfs |
| Lake Creek Near Diamond | 113 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near Annie Spring Near Crater Lake. 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 |
|---|---|
| Annie Springs | — |
| Annie Springs | 0 in |
| Crater Lake National Park Hq | 0 in |
| Sun Pass | 0 in |
| Nohrsc Sun Pass | — |
| Sevenmile Marsh | 0 in |
Plan a trip
Reservoirs, boat launches, river runs, and fishing spots within driving distance of Annie Spring Near Crater Lake.
Boat launches
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River runs
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Nearby fishing
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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 Annie Spring Near Crater Lake in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Annie Spring Near Crater Lake crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Annie Spring Near Crater Lake
What is the Annie Spring Near Crater Lake flow rate right now?
As of August 20, 2026, Annie Spring Near Crater Lake is flowing at 1 cfs. The live value, gage height, and 24-hour trend are shown at the top of this page.
Is the Annie Spring Near Crater Lake running high or low right now?
Check the percent of median figure on this page: above 100% means Annie Spring Near Crater Lake 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 Annie Spring Near Crater Lake come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 11503000. 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 Annie Spring Near Crater Lake 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 Annie Spring Near Crater Lake report — flow alerts, favorites, and history & forecasts, plus the free iPhone app.