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Hydrograph River at a Glance Download
Big Sioux River at Sioux City Stage (ft)Observed: 9.13 ft at 8:45AM Mar 03, 2015Observed: 9.12 ft at 9:00AM Mar 03, 2015Observed: 9.11 ft at 9:15AM Mar 03, 2015Observed: 9.12 ft at 9:30AM Mar 03, 2015Observed: 9.12 ft at 9:45AM Mar 03, 2015Observed: 9.12 ft at 10:00AM Mar 03, 2015Observed: 9.12 ft at 10:15AM Mar 03, 2015Observed: 9.12 ft at 10:30AM Mar 03, 2015Observed: 9.09 ft at 11:45AM Mar 03, 2015Observed: 9.13 ft at 12:00PM Mar 03, 2015Observed: 9.1 ft at 12:15PM Mar 03, 2015Observed: 9.11 ft at 12:30PM Mar 03, 2015Observed: 9.11 ft at 1:45PM Mar 03, 2015Observed: 9.11 ft at 2:00PM Mar 03, 2015Observed: 9.1 ft at 2:15PM Mar 03, 2015Observed: 9.11 ft at 2:30PM Mar 03, 2015Observed: 9.13 ft at 2:45PM Mar 03, 2015Observed: 9.13 ft at 3:00PM Mar 03, 2015Observed: 9.12 ft at 3:15PM Mar 03, 2015Observed: 9.12 ft at 3:16PM Mar 03, 2015Observed: 9.13 ft at 3:30PM Mar 03, 2015Observed: 9.13 ft at 3:31PM Mar 03, 2015Observed: 9.12 ft at 3:46PM Mar 03, 2015Observed: 9.12 ft at 4:45PM Mar 03, 2015Observed: 9.12 ft at 5:00PM Mar 03, 2015Highest Observation: 9.14 ft at 5:15PM Mar 03, 2015Observed: 9.12 ft at 5:30PM Mar 03, 2015Observed: 9.11 ft at 5:45PM Mar 03, 2015Highest Observation: 9.14 ft at 6:00PM Mar 03, 2015Observed: 9.12 ft at 6:15PM Mar 03, 2015Observed: 9.13 ft at 6:30PM Mar 03, 2015Observed: 9.12 ft at 6:45PM Mar 03, 2015Observed: 9.12 ft at 7:00PM Mar 03, 2015Observed: 9.13 ft at 7:15PM Mar 03, 2015Observed: 9.13 ft at 7:30PM Mar 03, 2015Observed: 9.13 ft at 7:45PM Mar 03, 2015Observed: 9.12 ft at 8:00PM Mar 03, 2015Observed: 9.13 ft at 8:15PM Mar 03, 2015Observed: 9.12 ft at 8:30PM Mar 03, 2015Observed: 9.11 ft at 9:45PM Mar 03, 2015Observed: 9.11 ft at 10:00PM Mar 03, 2015Observed: 9.1 ft at 10:15PM Mar 03, 2015Observed: 9.1 ft at 10:30PM Mar 03, 2015Observed: 9.08 ft at 10:45PM Mar 03, 2015Observed: 9.08 ft at 11:00PM Mar 03, 2015Observed: 9.07 ft at 11:15PM Mar 03, 2015Observed: 9.07 ft at 11:16PM Mar 03, 2015Observed: 9.08 ft at 11:30PM Mar 03, 2015Observed: 9.08 ft at 11:31PM Mar 03, 2015Observed: 9.07 ft at 11:46PM Mar 03, 2015Observed: 9.06 ft at 12:45AM Mar 04, 2015Observed: 9.06 ft at 1:00AM Mar 04, 2015Observed: 9.05 ft at 1:15AM Mar 04, 2015Observed: 9.04 ft at 1:30AM Mar 04, 2015Observed: 9.05 ft at 1:45AM Mar 04, 2015Observed: 9.06 ft at 2:00AM Mar 04, 2015Observed: 9.04 ft at 2:15AM Mar 04, 2015Observed: 9.04 ft at 2:30AM Mar 04, 2015Observed: 9.04 ft at 2:45AM Mar 04, 2015Observed: 9.04 ft at 3:00AM Mar 04, 2015Observed: 9.04 ft at 3:15AM Mar 04, 2015Observed: 9.04 ft at 3:30AM Mar 04, 2015Observed: 9.03 ft at 3:45AM Mar 04, 2015Observed: 9.02 ft at 4:00AM Mar 04, 2015Observed: 9.03 ft at 4:15AM Mar 04, 2015Observed: 9.03 ft at 4:30AM Mar 04, 2015Observed: 9.02 ft at 4:45AM Mar 04, 2015Observed: 9.02 ft at 5:00AM Mar 04, 2015Observed: 9.02 ft at 5:15AM Mar 04, 2015Observed: 9.02 ft at 5:30AM Mar 04, 2015Observed: 9 ft at 6:45AM Mar 04, 2015Observed: 8.99 ft at 7:00AM Mar 04, 2015Observed: 9 ft at 7:15AM Mar 04, 2015Observed: 9 ft at 7:16AM Mar 04, 2015Observed: 9 ft at 7:30AM Mar 04, 2015Observed: 9 ft at 7:31AM Mar 04, 2015Observed: 8.99 ft at 7:45AM Mar 04, 2015Observed: 8.99 ft at 7:46AM Mar 04, 2015Observed: 8.98 ft at 8:00AM Mar 04, 2015Observed: 8.98 ft at 8:15AM Mar 04, 2015Observed: 8.98 ft at 8:30AM Mar 04, 2015USGS--Water Resources of the United StatesSXCI4(plotting HGIRG) Graph Created (9:03AM Mar 4, 2015)ObservedLatest observed value: 8.98 ft at 8:30 AM CST 4-Mar-2015. Flood Stage is 31.5 ft
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Tabular Data (UTC)
Tabular Data (CST)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: 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.

NOTE: Automated gauge readings are now available, courtesy of the USGS.

NOTE: Forecasts for the Big Sioux River at Sioux City are issued as needed during times of high water, but are not routinely available.

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Upstream Gauge - at Akron Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 40.5
Moderate Flood Stage: 37.5
Flood Stage: 31.5
Action Stage: 28.5
Low Stage (in feet): 0

Historic Crests
(1) 108.30 ft on 04/10/1969
(2) 106.80 ft on 04/03/1960
(3) 105.63 ft on 06/20/2014
(4) 104.80 ft on 04/01/1962
(5) 104.50 ft on 06/25/1984
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 105.63 ft on 06/20/2014
(2) 102.20 ft on 06/27/2011
(3) 97.70 ft on 09/30/2010
(4) 96.80 ft on 04/10/1997
(5) 102.00 ft on 04/14/1993
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to www.floodsmart.gov.

Zoom Level:14
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Disclaimer
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
43 The lower levees in the Iowa Riverside community are in danger of being overtopped if not sandbagged.
40.5 Sandbagging is needed to protect Interstate 29 from flooding.
37.5 Most of the storm drains are submerged.
31.5 Agricultural land north of the leveed area begins to flood.
Photos
(1) Upstream View
(2) Downstream View
About This Location Collapse

Latitude: 42.524444° N, Longitude: 96.480000° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 31.5 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
Elevation
(gauge height = flood stage)
Elevation information source
NAVD88 1060 ft 1091.5 ft Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other 992.7 ft 1091.7 ft  

Current/Historical Observations:

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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: 12-Feb-2015 9:33 PM
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