Portage R. Near Elmore flow report
As of July 15, 2026, Portage R. Near Elmore is flowing at 147 cfs with a gage height of 2.55 ft, receding 47% over the past 24 hours. Source: USGS gauge #04195820, refreshed throughout the day.
Historical Data
Portage R. Near Elmore at a glance
How Portage R. Near Elmore is running right now, where it sits on the map, and the key gauge stats.
Portage R. Near Elmore is flowing at 147 cfs, with the water sitting 2.55 ft at the gage. Flow is down 47% since yesterday as the gauge recedes.
This is USGS gauge #04195820 in Ohio. Over the past 10 days the average has been 442 cfs, peaking at 1,100 cfs.
For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the Ohio flow report.
Engineering Data
Flow-duration statistics and observed peak-flow context computed from this gauge’s complete daily record (USGS #04195820).
Percentiles are flow-duration values from this gauge’s observed daily record. Return periods are Weibull plotting-position estimates from observed annual maxima — decision-support context, not a regulatory flood-frequency analysis (no Bulletin 17C fitting). Verify against USGS NWIS approved records for permitting or litigation use. Part of Snoflo for Engineering.
Streamflow Forecast
Over the next 5 days, Portage R. Near Elmore Oh is expected to recede from today's 147 cfs, toward roughly 108 cfs by 2026-07-20 (likely range 15-773 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.
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.
Portage R. Near Elmore
near Elmore, OH streamgauge monitors the flow of the Portage River, which is primarily fed by snowmelt and rainfall. The river's flow is influenced by several tributaries, including the Toussaint Creek and the Wolf Creek, as well as the presence of several dams. Seasonally, the river experiences peak flows in the spring due to snowmelt and heavy rainfall, while low flows occur in the summer and fall. Interestingly, the Portage River is home to a diverse array of fish species, including smallmouth bass, northern pike, and walleye.
Nearby streamflow levels
Cross-check Portage R. Near Elmore's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Portage R. Near Elmore Oh | 147 cfs |
| Portage River At Woodville Oh | 92 cfs |
| Sandusky River Near Fremont Oh | 216 cfs |
| Ottawa River At University Of Toledo Toledo Oh | 17 cfs |
| Wolf Creek At Holland Oh | 3 cfs |
| Maumee River At Waterville Oh | 1,830 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near Portage R. Near Elmore. 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 |
|---|---|
| Bowling Green Wwtp | 0 in |
| 1 N Bellevue Cocorahs (Oh-Hr-2) | 0 in |
| 3 Ese Huron Cocorahs (Oh-Er-49) | 0 in |
| Huron 3.1 Ese | 0 in |
| Dundee | 0 in |
| Bucyrus | 0 in |
Plan a trip
Reservoirs, boat launches, river runs, and fishing spots within driving distance of Portage R. Near Elmore.
Boat launches
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 Portage R. Near Elmore in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Portage R. Near Elmore crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Portage R. Near Elmore
Where does the streamflow data for Portage R. Near Elmore come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 04195820. 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 Portage R. Near Elmore 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 Portage R. Near Elmore report
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