Grand River Near Painesville flow report
As of July 15, 2026, Grand River Near Painesville is flowing at 90 cfs with a gage height of 2.00 ft, rising 46% over the past 24 hours. Source: USGS gauge #04212100, refreshed throughout the day.
Historical Data
Grand River Near Painesville at a glance
How Grand River Near Painesville is running right now, where it sits on the map, and the key gauge stats.
Grand River Near Painesville is flowing at 90 cfs, with the water sitting 2.00 ft at the gage. Flow is up 46% since yesterday — a rising hydrograph.
This is USGS gauge #04212100 in Ohio. Over the past 10 days the average has been 123 cfs, peaking at 247 cfs.
For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the Ohio flow report.
Streamflow Forecast
Over the next 5 days, Grand River Near Painesville Oh is expected to hold near today's 62 cfs, toward roughly 66 cfs by 2026-07-19 (likely range 11-401 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.
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.
Grand River Near Painesville
The river's constituents include agricultural runoff, urban stormwater runoff, and treated wastewater. There are several tributaries that feed into the Grand River, including the Chagrin River and the Blackbrook Creek. The Grand River experiences seasonal trends, with higher flows in the spring due to snowmelt and precipitation, and lower flows in the summer and fall. The river is also home to several dams, including the Harpersfield Dam, which was built in 1925 for flood control and hydroelectric power generation. Interestingly, the Grand River is known for its diverse fish population, including smallmouth bass, steelhead, and northern pike.
Nearby streamflow levels
Cross-check Grand River Near Painesville's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Grand River Near Painesville Oh | 90 cfs |
| Chagrin River At Willoughby Oh | 23 cfs |
| Unnamed Trib To Chagrin R At Mayfield Village Oh | 1 cfs |
| East Branch Euclid Creek At Richmond Heights Oh | 5 cfs |
| Euclid Creek At Cleveland Oh | 8 cfs |
| Euclid Creek At South Euclid Oh | 7 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near Grand River Near Painesville. 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 |
|---|---|
| Mentor 2.1 Ese | 0 in |
| Mentor-On-The-Lake Trained Spotter (X4170814) | 0 in |
| Chardon | 0 in |
| Madison 4.2 S | 0 in |
| Montville (Cle1322) | 5 in |
| 1 Sse Montville Cocorahs (Oh-Gg-4) | 13 in |
Plan a trip
Reservoirs, boat launches, river runs, and fishing spots within driving distance of Grand River Near Painesville.
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 Grand River Near Painesville in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Grand River Near Painesville crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Grand River Near Painesville
Where does the streamflow data for Grand River Near Painesville come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 04212100. 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 Grand River Near Painesville 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 Grand River Near Painesville report
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