2026-03-07T00:00:00-07:00
* WHAT...Snow and blowing snow expected. Total snow accumulations between 5 and 8 inches, with the heaviest snow south of Castle Rock. Winds gusting as high as 35 mph. * WHERE...Castle Rock. * WHEN...From 6 AM this morning to midnight MST tonight. * IMPACTS...Travel could be very difficult. The hazardous conditions will impact the Friday morning and evening commutes.
Summary
Total streamflow across the
Meramec River
was last observed at
9,260
cfs, and is expected to yield approximately
18,367
acre-ft of water today; about 80%
of normal.
Average streamflow for this time of year is
11,535 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 Sullivan
reporting a streamflow rate of 29,100 cfs.
This is also the highest stage along the Meramec River, with a gauge stage of
19.32 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.
15-Day Weather Outlook
River Details
| Last Updated | 2026-03-05 |
| Discharge Volume | 18,367 ACRE-FT |
| Streamflow |
9,260.0 cfs
+4641.0 cfs (+100.48%) |
| Percent of Normal | 80.28% |
| Maximum |
227,910.0 cfs
2015-12-30 |
| Seasonal Avg | 11,535 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 |
1270 cfs | 6.26 ft | 2092.59 | |||||
|
Meramec River Near Steelville
USGS 07013000 |
17600 cfs | 15.63 ft | 176.3 | |||||
|
Meramec River Near Sullivan
USGS 07014500 |
29100 cfs | 19.32 ft | 78.09 | |||||
|
Meramec River At Pacific
USGS 07017020 |
8090 cfs | 5.88 ft | 203.07 | |||||
|
Meramec River Near Eureka
USGS 07019000 |
14600 cfs | 11.06 ft | 187.16 |
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.