Floyd River river
Total streamflow across the Floyd River was last observed at 1,114 cfs, and is expected to yield approximately 2,210 acre-ft of water today; about 66% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 1,686 cfs, with recent peaks last observed on 2018-09-21 when daily discharge volume was observed at 20,400 cfs.
Maximum discharge along the river is currently at the Floyd River At James reporting a streamflow rate of 846 cfs. This is also the highest stage along the Floyd River, with a gauge stage of 10.24 ft at this location. This river is monitored from 2 different streamgauging stations along the Floyd River, the highest being situated at an altitude of 1,289 ft, the Floyd River At Alton.
River streamflow levels
Daily aggregate streamflow across every monitored gauge along the Floyd River. Use the range buttons to zoom in on a specific period.
Total streamflow
Sum of all monitored streamgauges · daily
Every streamgauge along the Floyd River
All 2 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)▾ |
|---|---|---|---|---|---|---|---|
|
Floyd River At Alton
IA
USGS 06600100
|
268 | 6.88 | -11.0 | 90% | 1 | 20,400 | 1,289 |
|
Floyd River At James
IA
USGS 06600500
|
846 | 10.24 | -7.2 | 93% | 7 | 15,200 | 1,117 |
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
Floyd River
The Floyd River runs through Iowa and South Dakota, covering a length of 111 miles. It was named after Charles Floyd, a member of the Lewis and Clark Expedition who died near its banks in 1804. The river has experienced multiple flooding events over the years, causing significant damage to the surrounding areas. To prevent future flooding, several dams and reservoirs have been constructed, including the Union County Dam, the Akron Impoundment, and the Alcester Dam. These structures regulate water flow and provide a source of water for agriculture and recreation. The Floyd River basin is primarily used for farming, with crops such as corn and soybeans being grown in the fertile soil. The river also offers recreational activities such as fishing, tubing, and kayaking.
Track the Floyd 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 Floyd River
Where does the data for the Floyd 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.