Big River at Byrnesville

Last updated: Apr 14, 2025, 7:35 AM UTC
No watches, warnings or advisories are in effect for this area.

Flood Impacts 🅘

  • 30.3 - The porch of the upstream left bank residence floods at this level.
  • 29.6 - The main floor at the Byrnesville mill begins to flood.
  • 29.4 - The floor of the gage shed begins to flood.

Gauge Info

Coordinates 38.3917, -90.6378
RFC NCRFC
State MO
WFO LSX
County Jefferson
Data Provider(s)
US Geological Survey USGS--Water Resources of the United States
USGS 07018500

Gauge Location

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Current Mouse Location
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Recent Crests

1. 27.57 ft on 11-06-2024 (P)
2. 19.70 ft on 08-05-2023
3. 21.95 ft on 03-26-2023
4. 19.70 ft on 03-05-2023
5. 20.39 ft on 02-19-2022

Historic Crests

1. 30.20 ft on 08-21-1915
2. 30.09 ft on 05-01-2017
3. 29.37 ft on 09-25-1993
4. 27.61 ft on 11-16-1993
5. 27.57 ft on 11-06-2024 (P)

Vertical Datum Table

type NAVD88
major Flooding 461.70 ft
moderate Flooding 453.70 ft
minor Flooding 449.70 ft
action 446.70 ft
Latest Value 439.23 ft
Gauge Zero 433.70 ft

Gauge Photos

Photo 1 of 12

Byrnesville looking upstream

Probability Information

Photo 1 of 3

Collaborative Agencies

The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.

WFO Information

Weather Forecast Office
St. Louis
12 Missouri Research Park Drive
St. Charles, MO 63304
Official Homepage