Rivers in Missouri

Meramec River near Eureka

St. Louis County, MissouriNWS ERKM7USGS 07019000St. Charles office

Below flood stage
2.93ftStage

Observed Tue, Sep 22, 11:00 AM CDT

Flood stage
19.00 ft
Record crest
46.11 ft2017

Open the live map with the river flood outlook

Flood stages and impacts

CategoryStage
Major flood31.00 ft
Moderate flood26.00 ft
Minor flood19.00 ft
Action17.00 ft
  1. 46.50 ftThe Raineri Construction Products building on Truitt Drive begins flooding near this height.
  2. 46.30 ftThe Shell station between south Central Avenue and Highway 109 building and the Eureka Post Office building will both begin flooding near this height.
  3. 46.00 ftMidwest Motors dealership's office building begins flooding at this height.
  4. 45.70 ftGershenson Construction on Truitt Drive begins flooding at this height.
  5. 45.30 ftThe Legion Park Community Center will begin flooding near this height.
  6. 45.00 ftThree businesses along Truitt Drive, Earthbound Recycling Center, J.M. Mersheutz Construction, and Sellenriek Grading, begin flooding near this height.
  7. 44.50 ftThe intersection of Highway 109 with highways W and FF will begin flooding near this height.
  8. 44.00 ftCotton's Ace Hardware between South Central Avenue and Highway 109 begins flooding near this height.
  9. 43.50 ftNear this height, floodwaters will reach the top of the rim around the wastewater treatment plant lagoon.
  10. 43.00 ftNear this height, numerous businesses along Central Avenue in old town Eureka, Rockwood Bank, and the sewage treatment plant will begin flooding.
  11. 42.80 ftMissouri State Route 109 in the older business section of Eureka is closed near this height.
  12. 42.00 ftMissouri State Route 109 near Old State Road is flooded and closed near this height. Also, Lions Park ball fields will begin flooding near this height.
  13. 41.50 ftNear this height, floodwaters will reach the floors of the utility buildings at the wastewater treatment plant, including the generator shelter.
  14. 40.20 ftHighway 109 at Eureka Senior High School is closed.
  15. 40.00 ftThe right bank begins to overflow.
  16. 35.00 ftLighthouse Storage property begins to flood. Shelters and roads within Route 66 State Park are also flooded at this level.
  17. 34.00 ftNumerous homes on West Spring River Ranch Road begin flooding at or slightly above this level.
  18. 32.90 ftNear this height, the parking lot, restrooms, and smaller pavilion along Williams Road at Kircher Park in Eureka begin flooding.
  19. 32.50 ftAt this height, about 12 houses on Willman Road start flooding the main floors. On the river's north side, another 8 homes along West Spring River Ranch Road begin flooding.
  20. 29.70 ftNear this height, the large pavilion floor and gazebo along Williams Road at Kircher Park in Eureka begin flooding.
  21. 28.00 ftThe lowest house on West Spring River Ranch Road begins flooding on the lower level. Also, at least one home on Willman Road begins flooding near this height.
  22. 27.00 ftThe Route 66 State Park road to the equestrian trailhead and to the boat ramp is flooded.
  23. 25.50 ftHornecker Road is closed near this height.
  24. 24.50 ftThe athletic fields at Eureka Senior High School begin flooding near this height.
  25. 23.80 ftSpring River Ranch Road begins flooding near this height on the east end.

Flood outlook

Chance of flooding, September to November

CategoryChance
Minor flooding18%
Moderate flooding8%
Major flooding6%

The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.

Crest history

105 crests on NOAA’s list since 1915.

#DateStage
1May 3, 201746.11 ft
2December 30, 201546.06 ft
3December 6, 198242.89 ft
4August 22, 191542.20 ft
5April 14, 199440.90 ft
6March 22, 200840.06 ft
7February 1, 191639.00 ft
8June 11, 194538.90 ft
9September 26, 199336.72 ft
10May 3, 198336.60 ft
11July 2, 195735.77 ft
12November 17, 199335.60 ft
13November 8, 202435.39 ft
14November 22, 198534.68 ft
15April 14, 197933.43 ft
16January 6, 195033.01 ft
17April 8, 202532.45 ft
18December 30, 194231.80 ft
19February 26, 198531.72 ft
20May 10, 196131.58 ft
21February 1, 196931.47 ft
22May 20, 199531.18 ft
23April 27, 194731.15 ft
24March 14, 193530.89 ft
25May 17, 193330.72 ft

Most recent crests

  • March 8, 2026: 23.60 ft
  • April 22, 2025: 21.92 ft
  • April 8, 2025: 32.45 ft
  • November 8, 2024: 35.39 ft
  • August 6, 2023: 21.45 ft
  • March 27, 2023: 27.19 ft
  • March 6, 2023: 21.82 ft
  • May 9, 2022: 24.89 ft
  • April 2, 2022: 21.83 ft
  • February 20, 2022: 20.76 ft

Nearby

Upstream, downstream and the gauges around this one.

What this means

Forecasts by the North Central River Forecast Center. Forecasts are issued as needed during times of high water, but are not routinely available. River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time. River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 48 hours into the future from the forecast issuance time.

Sources

Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.