Maries River at Westphalia, MO
River level and flood forecast · Osage County
Normal0.1 ftas of Mon 3 PM
The river is 9.9 ft below flood stage (10 ft).
Flow: 1 cubic feet per second (USGS).
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 | 20 ft |
| Moderate flood stage | 15 ft |
| Flood stage | 10 ft |
| Action stage | 8 ft |
| Record crest (September 26, 1998) | 24.84 ft |
What floods at each level
From the National Weather Service, highest first.
- 27.2 ftThe sewage treatment plant just off of County Road 611 east of Westphalia will begin to flood near this height.
- 23.6 ftDuring the flood of August 8, 2013, U.S. Highway 63 was completely inundated at this height just NW of Maries River bridge.
- 21.5 ftNear this height on 27 December 2015...US Highway 63 was closed.
- 20.39 ftCounty Road 611 just west of the bridge begins flooding near this height.
- 20 ftState Highway T will begin flooding southwest of the bridge near this height.
- 14.3 ftCounty Road 608 north of the bridge begins flooding near this height.
- 14 ftCounty Road 512 just south of Westphalia begins flooding near a small creek bridge near this height.
- 13.9 ftCounty Road 615 just north of the U.S. Highway 63 bridge begins flooding at this height.
- 12.1 ftThe north end of County Road 521 begins flooding adjacent to the river near this height.
- 9 ftCounty Road 610 begins flooding near the Indian Creek bridge near this height.
- 8.23 ftThe Sestak Slab bridge along the south portion of County Road 521 (near County Road 522) begins flooding near this height. This bridge flooded during the crest of 1/30/2013 of 9.76 feet. It is 11.5 river miles upstream from the gage.
Highest crests on record
- 24.84 ft — September 26, 1998
- 23.58 ft — August 8, 2013
- 23.35 ft — December 27, 2015
- 22.8 ft — June 1, 1937
- 21.96 ft — December 3, 1982
Recent crests: 11.63 ft (April 27, 2026) · 12.68 ft (April 18, 2026) · 10.18 ft (June 30, 2025) · 12.35 ft (April 21, 2025) · 10.57 ft (April 6, 2025)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (WPHM7); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.