Shell Rock River river
River streamflow levels
Daily aggregate streamflow across every monitored gauge along the Shell Rock River. Use the range buttons to zoom in on a specific period.
Total streamflow
Sum of all monitored streamgauges · daily
Every streamgauge along the Shell Rock River
All 1 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)▾ |
|---|---|---|---|---|---|---|---|
|
Shell Rock River At Shell Rock
IA
USGS 05462000
|
833 | 8.24 | -9.3 | 44% | 97 | 71,400 | 882 |
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
Shell Rock River
The Shell Rock River is a 116-mile-long tributary of the Cedar River in Iowa. The river was named after the abundance of shell rocks found in its bed. It originates in Minnesota and flows into the Cedar River near Shell Rock, Iowa. The river’s watershed covers approximately 1,300 square miles, and its main tributaries are the Winnebago and West Fork Shell Rock Rivers. The river is used for recreational activities such as fishing, hiking, and kayaking. The Shell Rock River also provides water for agricultural purposes as it runs through several farming communities. The river is managed by multiple dams, including the Clarksville Dam, the Greene Dam, and the Shell Rock Dam, which are used to regulate water levels and prevent flooding.
Recreation along the Shell Rock River
Fishing access and paddle runs Snoflo tracks within the watershed.
Track the Shell Rock 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 Shell Rock River
Where does the data for the Shell Rock 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.