Flatrock River river
Total streamflow across the Flatrock River was last observed at 2,160 cfs, and is expected to yield approximately 4,284 acre-ft of water today; about 173% of normal. River levels are high. Average streamflow for this time of year is 1,248 cfs, with recent peaks last observed on 2025-04-06 when daily discharge volume was observed at 30,300 cfs.
Maximum discharge along the river is currently at the Flatrock River At Columbus reporting a streamflow rate of 1,380 cfs. This is also the highest stage along the Flatrock River, with a gauge stage of 6.2 ft at this location. This river is monitored from 2 different streamgauging stations along the Flatrock River, the highest being situated at an altitude of 781 ft, the Flatrock River At St. Paul.
River streamflow levels
Daily aggregate streamflow across every monitored gauge along the Flatrock River. Use the range buttons to zoom in on a specific period.
Total streamflow
Sum of all monitored streamgauges · daily
Every streamgauge along the Flatrock 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)▾ |
|---|---|---|---|---|---|---|---|
|
Flatrock River At St. Paul
IN
USGS 03363500
|
780 | 2.08 | -21.7 | 276% | 0 | 13,000 | 781 |
|
Flatrock River At Columbus
IN
USGS 03363900
|
1,380 | 6.20 | -22.9 | 231% | 19 | 19,300 | 624 |
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
Flatrock River
The Flatrock River is a major waterway in central Indiana, stretching for 60 miles from Henry County to Bartholomew County. It has a rich history, with Native American tribes and European settlers using it for transportation and fishing. Today, the river is primarily used for recreational activities like kayaking, fishing, and camping. The river is also an important source of water for agriculture in the area. There are several dams and reservoirs along the river, including the Cataract Dam, which was erected in 1927 to provide hydroelectric power to nearby communities. In recent years, there has been concern about water quality in the Flatrock River due to agricultural runoff and other pollution sources. Efforts are underway to protect the river and ensure it remains a valuable resource for generations to come.
Recreation along the Flatrock River
Fishing access and paddle runs Snoflo tracks within the watershed.
Track the Flatrock 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 Flatrock River
Where does the data for the Flatrock 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.