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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 South Platte River near Balzac are issued as needed during times of high water, but are not routinely available.
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Upstream Gauge - at Fort Morgan Upstream Gauge Downstream Gauge Downstream Gauge - at Atwood
Zoom Level:11
Flood Categories (in feet)
Major Flood Stage: 12.5
Moderate Flood Stage: 11
Flood Stage: 10
Action Stage: 8
Low Stage (in feet): -9999

Historic Crests
(1) 13.71 ft on 09/15/2013
(2) 10.43 ft on 06/12/1995
(3) 10.39 ft on 05/13/2015
(4) 10.38 ft on 05/03/1999
(5) 9.75 ft on 06/17/2010
(6) 9.25 ft on 06/16/1997
(7) 9.06 ft on 07/17/2011
(8) 9.06 ft on 06/05/2014
(9) 7.51 ft on 06/14/2009
(10) 6.85 ft on 06/16/2016
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 5.25 ft on 06/09/2021
(2) 3.50 ft on 03/22/2020
(3) 5.39 ft on 06/24/2019
(4) 4.12 ft on 05/21/2018
(5) 6.30 ft on 05/29/2017
(6) 6.85 ft on 06/16/2016
(7) 10.39 ft on 05/13/2015
(8) 9.06 ft on 06/05/2014
(9) 13.71 ft on 09/15/2013
(10) 3.95 ft on 02/08/2012
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
13.5 Businesses and residences flood along the river in eastern Sterling.
12.5 Numerous roads and structures flood along the river.
12 Water flows over Colorado Highway 71 near Snyder.
11 There is extensive flooding of agricultural land near the river. Water flows over State Highway 63 near Atwood.
10 Agricultural land floods along the river near Sterling.
8 The river is out of its banks and into fields and meadows.
(1) Looking Upstream
(2) Looking Downstream
Additional Information Collapse
Observations provided by the Colorado Division of Water Resources

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
Denver/Boulder Weather Forecast Office
325 Broadway
Boulder, CO 80305-3328
(303) 494-4221
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Page last modified: 2-Nov-2020 7:28 PM
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