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Hydrograph River at a Glance Download
South Branch Root River at Preston Stage (ft)USGS--Water Resources of the United StatesPTNM5(plotting HGIRZ) Graph Created (3:00PM Apr 20, 2024)ObservedLatest observed value: 927.72 ft at 8:00 AM CDT 15-Apr-2024. Flood Stage is 937 ft
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Tabular Data (UTC)
Tabular Data (CDT)
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Datum: Not Available
NOTE: Forecasts for the South Branch Root River at Preston are issued as needed during times of high water, but are not routinely available.
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Upstream Locations Upstream Gauge Downstream Gauge Downstream Gauge - at Lanesboro
Flood Categories (in feet)
Major Flood Stage: 942
Moderate Flood Stage: 939
Flood Stage: 937
Action Stage: 933
Low Stage (in feet): -9999

Historic Crests
(1) 942.40 ft on 03/26/1950
(2) 942.00 ft on 07/11/1981
(3) 941.67 ft on 06/09/2008
(4) 939.47 ft on 07/10/2000
(5) 939.12 ft on 04/07/2001
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 938.07 ft on 05/20/2013
(2) 937.35 ft on 09/24/2010
(3) 941.67 ft on 06/09/2008
(4) 938.12 ft on 09/16/2004
(5) 939.12 ft on 04/07/2001
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

Zoom Level:15
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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
938 Some city streets are flooded near the river.
(1) Upstream view at Preston, July 7th, 2014, Stage = 28.77 ft
(2) Downstream view at Preston, July 7th, 2014, Stage = 28.77 ft
About This Location Collapse

Latitude: 43.667200° N, Longitude: 92.083600° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 900 ft 937 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 900)
(gauge height = flood stage)
Elevation information source
NAVD88 Not Available Not Available 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 Not Available Not Available  
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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
La Crosse Weather Forecast Office
N2788 County Rd FA
La Crosse, WI 54601
(608) 784-7294
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Page last modified: 2-Nov-2020 7:29 PM
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