Meramec River Flow
As of 2026-08-02, the Meramec River is flowing at a combined 9,357 cfs across 5 USGS streamgauges — 238% of normal for this time of year, versus a seasonal average of 3,930 cfs.
Total streamflow across the Meramec River was last observed at 9,357 cfs, and is expected to yield approximately 18,559 acre-ft of water today; about 238% of normal. River levels are high. Average streamflow for this time of year is 3,930 cfs, with recent peaks last observed on 2015-12-30 when daily discharge volume was observed at 227,910 cfs.
Maximum discharge along the river is currently at the Meramec River At Pacific reporting a streamflow rate of 3,660 cfs. However, the streamgauge with the highest stage along the river is the Meramec River Near Sullivan with a gauge stage of 5.65 ft. This river is monitored from 5 different streamgauging stations along the Meramec River, the highest being situated at an altitude of 877 ft, the Meramec River At Cook Station.
River streamflow levels
Daily aggregate streamflow across every monitored gauge along the Meramec River. Use the range buttons to zoom in on a specific period.
Total streamflow
Sum of all monitored streamgauges · daily
Every streamgauge along the Meramec River
All 5 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)▾ |
|---|---|---|---|---|---|---|---|
|
Meramec River At Cook Station
MO
USGS 07010350
|
147 | 2.96 | 92.7 | 472% | 5 | 13,400 | 877 |
|
Meramec River Near Steelville
MO
USGS 07013000
|
750 | 2.50 | 33.0 | 328% | 111 | 57,900 | 688 |
|
Meramec River Near Sullivan
MO
USGS 07014500
|
2,490 | 5.65 | -29.7 | 492% | 48 | 68,500 | 577 |
|
Meramec River At Pacific
MO
USGS 07017020
|
3,660 | 2.49 | 67.9 | 413% | 305 | 61,200 | 432 |
|
Meramec River Near Eureka
MO
USGS 07019000
|
2,310 | 4.34 | -2.1 | 237% | 218 | 155,000 | 407 |
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
Meramec River
The Meramec River is a 218-mile-long tributary of the Mississippi River that flows through eastern Missouri. The river has played a significant role in the history of the region, serving as a transportation route for Native Americans and early settlers. The river has also been the site of several notable floods, including the devastating floods of 1993 and 2015. The river's hydrology is influenced by numerous tributaries, including the Bourbeuse and Big Rivers. The Meramec River is home to several reservoirs and dams, including the Meramec State Park Dam and the Fenton City Park Dam. These structures serve a variety of purposes, including flood control and hydroelectric power generation. The river is popular for recreational activities, including fishing, canoeing, and camping, and also supports a thriving agricultural industry.
Track the Meramec 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 Meramec River
How is the Meramec River flowing right now?
As of 2026-08-02, the Meramec River is flowing at a combined 9,357 cfs across its USGS streamgauges, about 238% of normal for this date. The live per-gauge breakdown and 24-hour trend are shown above.
Is the Meramec River running high or low right now?
Check the percent-of-normal figure on this page: above 100% means the river is running higher than its seasonal average for the date, below 100% means lower. The per-gauge table shows which reaches are highest and lowest.
Where does the data for the Meramec 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.