Sandusky River river
Total streamflow across the Sandusky River was last observed at 2,748 cfs, and is expected to yield approximately 5,450 acre-ft of water today; about 74% of normal. Average streamflow for this time of year is 3,709 cfs, with recent peaks last observed on 2026-04-02 when daily discharge volume was observed at 41,390 cfs.
River streamflow levels
Daily aggregate streamflow across every monitored gauge along the Sandusky River. Use the range buttons to zoom in on a specific period.
Total streamflow
Sum of all monitored streamgauges · daily
Every streamgauge along the Sandusky River
All 0 USGS gauges Snoflo tracks for this river, with current flow, stage, recent change, percent of normal, and the gauge's all-time min / max. Click any header to sort. Cells are heatmapped relative to the column min/max -- darker blue = higher.
| Streamgauge▾ | Streamflow (cfs)▾ | Gauge stage (ft)▾ | 24h Δ (%)▾ | % Normal▾ | Min (cfs)▾ | Max (cfs)▾ | Elevation (ft)▾ |
|---|
Maximum streamflow discharge by year
The single highest aggregate discharge recorded each year. Spotting the multi-year trend reveals droughts vs. wet cycles long before the headline daily flow does.
Annual peak discharge
From the river's full record · one point per water year
Streamflow elevation profile
Each bubble is one gauge along the river, plotted by current streamflow (x-axis) vs elevation (y-axis), sized by gauge stage. Reading top-to-bottom traces the river from headwaters down to its mouth -- you can see flow accumulate as elevation drops.
Elevation vs streamflow
One point per monitored gauge · bubble size = gauge stage
Sandusky River
The Sandusky River is a river in northwestern Ohio that flows for 133 miles before emptying into Lake Erie. Historically, the river has played an important role in transportation and industry, particularly during the 19th century when it was used to transport logging and agricultural products. Today, the river is primarily used for recreation, including fishing and boating. The river's hydrology is impacted by several reservoirs and dams, including the Tiffin and Ballville dams. These dams help to regulate water flow and prevent flooding. The river also serves as a source of irrigation for nearby agricultural land. Despite pollution concerns in the past, the Sandusky River has seen improvements in water quality and continues to be an important resource for the region.
Recreation along the Sandusky River
Fishing access and paddle runs Snoflo tracks within the watershed.
Track the Sandusky River in the Snoflo app
Set per-gauge push alerts (e.g. "alert me when flow at the Russian R Nr Healdsburg crosses 5,000 cfs"), and Snoflo's iOS app pushes the moment USGS reports the crossing.
About the Sandusky River
Where does the data for the Sandusky River come from?
Streamflow and gauge stage data are sourced from the U.S. Geological Survey (USGS) National Water Information System. The aggregate flow shown at the top of the page is computed by Snoflo as the sum of all monitored gauges along the river.
How is "percent of normal" calculated?
Today's aggregate streamflow is compared to the historical average aggregate streamflow on this calendar day across the river's full record. 100% means right on average; values above 100% indicate above-normal flow (wet year); values below indicate below-normal (dry year or drought).
Why are some gauges showing very different flows?
Gauges along a river measure flow at different points: headwater gauges read what's coming off the snowpack or mountain runoff; downstream gauges integrate everything upstream, including tributary inputs. Wide spreads usually mean a tributary is contributing significantly between gauges.
What's the elevation profile chart showing?
Each bubble is one gauge along the river, plotted by streamflow (x-axis) and elevation (y-axis), sized by gauge stage. Reading top-down traces the river from headwaters to mouth -- you can see flow build as elevation drops.
Can I get alerts when a specific gauge crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app on a per-gauge basis. Open any individual streamgauge from the table above and favorite it to set a discharge threshold.