Meramec River at Valley Park, MO
River level and flood forecast · St. Louis County
Normal-2.9 ftas of Mon 3 PM
The river is 20.9 ft below flood stage (18 ft).
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 6 PM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 27 ft |
| Moderate flood stage | 21 ft |
| Flood stage | 18 ft |
| Action stage | 11 ft |
| Record crest (December 31, 2015) | 44.11 ft |
What floods at each level
From the National Weather Service, highest first.
- 44 ftThis represents the level at which, with no additional protection, the Valley Park levee would be overtopped at the upper end of the flood wall.
- 42 ftNear this height, the intersection of Big Bend Road and Dougherty Ferry Road begins flooding.
- 38.8 ftInterstate 44 is closed near this height. During the December 2015 flood, this highway was closed from Bowles Avenue in Valley Park west to Missouri Route 109 exit in Eureka.
- 38.3 ftNear this height, Missouri Route 30 (Gravois Road) must be closed in both directions in St. Louis County.
- 38 ftRailroad bridge just downstream of the Highway 141 bridge begins to flood.
- 37.8 ftMODOT must take preventative action to keep I-44 lanes open west of Highway 141.
- 36 ftWater begins covering the BNSF rails at this height.
- 35 ftThe final flood gate through the BNSF railroad path is closed at this height.
- 33 ftOld Highway 141 is closed at Gravois Road and at Gravois Bluffs Blvd. This impact level may vary depending on the crest difference of the Mississippi River at St. Louis from 30.8 ft, the March 2008 crest.
- 29 ftIn Fenton, the following roads are closed at this level: all of Yarnell Road, Riverside Drive at Wolfner Drive, Fabricator Drive at Headland Drive, Soccer Park Road at the truck stop, Rudder Road at Fabick Drive, and Larkin Williams Road at Ferry Street.
- 28 ftThe flood gate at Vance Road in Valley Park is closed at this height.
- 27 ftThe flood gate at St. Louis Avenue in Valley Park is closed at this height. Near this height, Vance Road begins to flood from just outside of the flood gate to Highland Village and Soccer Park Road from Cassens Drive to Yarnell Road begins to flood.
- 26.6 ftThe northbound lanes of Highway 141 at I-44 will be closed near this height.
- 26 ftNear this height, Smizer Mill Road and Meramec Station Road begin flooding near their intersection.
- 25.9 ftThe southbound lanes of Highway 141 at I-44 will be closed near this height.
- 25 ftNear this height, Yarnell Road north of the Soccer Park Road intersection begins to flood. At this level, Rock Alva Drive (next to Tapawingo Golf Club) begins flooding.
- 24 ftWater reaches top of boat ramp at Valley Park Public Fishing Access. Also, the Anheuser-Busch Soccer Park begins flooding near this height.
- 21.9 ftYarnell Road is closed at Riverside Drive. Larkin Williams is closed at Riverside Golf Club entrance. In Valley Park...Tree Court Industrial Road begins flooding between Marshall Road and Scarlet Oak Boulevard. Also...the golf course at Family Golf and Learning Center and the Kirkwood Athletic Association ball fields begin flooding near this height.
- 21 ftWater enters the SW corner of Larkin Williams and Yarnell Road intersection through a stormwater grate. In Valley Park...Marshall Road begins to flood between Tree Court Industrial Road and Timberbrook Drive.
- 19.5 ftBuder Park and the recreation park at the water plant floods.
- 19 ftThe south riverward side of Marshall Road begins to flood.
- 12 ftSluice gates at 5th Street, 3rd Street, and Fishpot Creek at Union Pacific Railway tracks must be closed.
Highest crests on record
- 44.11 ft — December 31, 2015
- 43.31 ft — May 3, 2017
- 39.73 ft — December 6, 1982
- 37.83 ft — March 22, 2008
- 37.4 ft — April 14, 1994
Recent crests: 20.45 ft (March 8, 2026) · 19.71 ft (April 23, 2025) · 28.74 ft (April 8, 2025) · 31.03 ft (November 8, 2024) · 18.41 ft (August 6, 2023)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (VLLM7); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.