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This probabilistic forecast is issued by the Missouri Basin River Forecast Center.
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About this graph
Forecasts for the Floyd River at James are issued as needed during times of high water, but are not routinely available.
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Upstream Gauge - at Merrill Upstream Gauge
Zoom Level:14
Flood Categories (in feet)
Major Flood Stage: 34
Moderate Flood Stage: 30
Flood Stage: 26
Action Stage: 24
Low Stage (in feet): -9999

Historic Crests
(1) 31.48 ft on 03/15/2019
(2) 28.85 ft on 06/21/1983
(3) 28.19 ft on 03/23/1979
(4) 28.13 ft on 02/19/1971
(5) 27.70 ft on 09/22/2018
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 9.13 ft on 04/10/2021
(2) 13.18 ft on 12/30/2019
(3) 31.48 ft on 03/15/2019
(4) 27.70 ft on 09/22/2018
(5) 14.53 ft on 02/14/2017
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
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Gauge LocationGauge Map Marker
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
38 the levees in and around Sioux City downstream of the gage begin to be overtopped.
36 flooding begins to affect the town of James.
35.5 the railroad closures in Sioux City should be closed.
34.5 approximately 3700 acres of farm land are flooded.
34 the northbound lane of Highway 75 is flooded, and the railroad company begins to shut down operations.
31.5 flooding begins to affect the farm levees, and about 3200 acres of farm land are flooded.
30 County Highway C70 begins to flood.
28.5 approximately 2100 acres of farm land are flooded.
27.5 approximately 1500 acres of farm land are flooded.
26 flooding begins to affect the low lying agricultural lands.
23 the lowest banks are overtopped with minor lowland flooding.
18 the Floyd River levee gates in Sioux City begin closing.
(1) Upstream View
(2) Downstream View

Other Real-time and/or Archive Data Sources:

Additional Information Collapse
How low could the river get?
Collaborative Agencies Collapse
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.
NWS Information
National Weather Service
Sioux Falls Weather Forecast Office
26 Weather Lane
Sioux Falls, SD 57104-0198
(605) 330-4247
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Page last modified: 2-Nov-2020 7:29 PM
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