Meramec River
Last Updated: April 19, 2026
Total streamflow across the
Meramec River
was last observed at
36,249
cfs, and is expected to yield approximately
71,899
acre-ft of water today; about 250%
of normal.
River levels are high.
Average streamflow for this time of year is
14,477 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 Near Eureka
reporting a streamflow rate of 13,100 cfs.
This is also the highest stage along the Meramec River, with a gauge stage of
10.54 ft at this location.
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.
The Meramec River is a 218-mile-long tributary of the Mississippi River that flows through eastern Missouri.
15-Day Long Term Forecast
River Details
| Last Updated | 2026-04-19 |
| Discharge Volume | 71,899 ACRE-FT |
| Streamflow |
36,249.0 cfs
Past 24 Hours: +12469.0 cfs (+52.43%) |
| Percent of Normal | 250.39% |
| Maximum |
227,910.0 cfs
2015-12-30 |
| Seasonal Avg | 14,477 cfs |
River Streamflow Levels
| Streamgauge | Streamflow | Gauge Stage | 24hr Change (%) | % Normal | Minimum (cfs) | Maximum (cfs) | Air Temp | Elevation |
|---|---|---|---|---|---|---|---|---|
|
Meramec River At Cook Station
USGS 07010350 |
979 cfs | 5.61 ft | 389.5 | |||||
|
Meramec River Near Steelville
USGS 07013000 |
4720 cfs | 6.97 ft | 329.09 | |||||
|
Meramec River Near Sullivan
USGS 07014500 |
7250 cfs | 9.21 ft | 187.7 | |||||
|
Meramec River At Pacific
USGS 07017020 |
10200 cfs | 7.33 ft | 4.51 | |||||
|
Meramec River Near Eureka
USGS 07019000 |
13100 cfs | 10.54 ft | 28.43 |
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile
The Meramec River (), sometimes spelled Maramec River is one of the longest free-flowing waterways in the U.S. state of Missouri, draining 3,980 square miles (10,300 km2) while wandering 218 miles (351 km) from headwaters near Salem to where it empties into the Mississippi River near St. Louis at Arnold and Oakville. The Meramec watershed covers
six Missouri Ozark Highland counties—Dent, Phelps, Crawford, Franklin, Jefferson, and St. Louis—and portions of eight others—Maries, Gasconade, Iron, Washington, Reynolds, St. Francois, Ste. Genevieve, and Texas. Between its source and its mouth, it falls 1,025 feet (312 m). Year-round navigability begins above Maramec Spring, just south of St. James. The Meramec's size increases at the confluence of the Dry Fork, and its navigability continues until the river enters the Mississippi at Arnold, Missouri.
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