National Weather Service Advanced Hydrologic Prediction Service

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Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS), with a target of March 2024. Existing AHPS content and features will be preserved and expanded within NWPS.

Experimental National Water Center Products: The National Hydrologic Discussion, Area Hydrologic Discussion, and Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via https://www.weather.gov/owp/operations, as described in the StoryMap here.

Weather Forecast Office Twin Cities/Chanhassen, MN

North Central River Forecast Center

Hydrograph

River at a Glance

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About this graph

Tabular Data (UTC)

Tabular Data (CDT)

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: Forecasts for the St. Croix River at Stillwater are issued routinely during the navigation season, and as needed at other times of the year.

More information on datums is available at www.ngs.noaa.gov/faq.shtml

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Upstream Gauge

Downstream Gauge

Flood Categories (in feet)

Major Flood Stage:	89
Moderate Flood Stage:	88
Flood Stage:	87
Action Stage:	80
Low Stage (in feet):	-9999

Historic Crests
(1) 94.10 ft on 04/18/1965
(2) 92.30 ft on 04/27/2001
(3) 92.20 ft on 04/16/1969
(4) 91.10 ft on 04/16/2001
(5) 90.45 ft on 04/12/1997
(6) 89.70 ft on 04/14/1952
(7) 89.21 ft on 04/24/2023 (P)
(8) 88.48 ft on 03/31/2019
(9) 87.90 ft on 06/28/1993
(10) 87.63 ft on 06/27/2014
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 89.21 ft on 04/24/2023 (P)
(2) 85.17 ft on 05/18/2022 (P)
(3) 81.55 ft on 04/17/2021
(4) 86.02 ft on 04/06/2020
(5) 88.48 ft on 03/31/2019
(6) 85.53 ft on 06/22/2018
(7) 85.65 ft on 04/30/2018
(8) 83.82 ft on 10/10/2017
(9) 83.46 ft on 05/25/2017
(10) 85.80 ft on 07/16/2016
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 74.90 ft on 09/08/2012
(2) 74.93 ft on 05/04/2015
(3) 75.10 ft on 07/01/1988
(4) 75.14 ft on 11/16/2014
(5) 75.19 ft on 08/02/2017
Show More Low Water Records

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

Show FEMA's National Flood Hazard Layers

Zoom Level:16

	Gauge Location	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

If you notice any errors in the below information, please contact our Webmaster
95	Estimated top of the flood protection dike in Afton.
94.8	Highway 95 near 2nd Ave in Bayport may be closed.
94	Estimated top of the flood protection dike at St Croix Beach.
92	Abandoned railroad bed north of Vine Street to St Croix Street impacted.
91	Dike Road impacted.
90	Lakefront Park bathhouse in Hudson affected.
89	The city park in Bayport begins flooding. Lake Mallalieu dam gates overtopped.
86.75	Buckeye Street Garage in Hudson impacted.
86	Due to safety issues...the Stillwater lift bridge will be closed near this stage.
85.8	First Street between Buckeye and Commercial Streets floods
85	Several residences along the river may experience flooding in their basements. Front Street in Hudson WI closes.
84	Second tier at Lakefront Park in Hudson floods.
83	Minnesota and Wisconsin DNRs invoke a no wake zone on the river.
80	Seawall at Lakefront Park in Hudson floods.
77	The Stillwater Riverwalk becomes inundated.
Photos (1) Looking Upriver (2) Looking Downriver (3) Looking Downriver 2 (4) Interstate Bridge looking East (5) Gage Bridge looking East

About This Location

Latitude: 45.056111° N, Longitude: 92.803056° W, Horizontal Datum: NAD83/WGS84

River Stage Reference Frame	Gauge Height	Flood Stage	Uses
NWS stage	0 ft	87 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	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	600 ft	687 ft	USACE utilizes the 1912 Datum

Current/Historical Observations:

Additional Information

Gauge maintained by USACE.

Resources

Hydrologic Resources

Additional Resources

Collaborative Agencies

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
Twin Cities/Chanhassen Weather Forecast Office
1733 Lake Drive West
Chanhassen, MN 55317-8581
(952) 361-6708
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Page last modified: 2-Nov-2020 7:29 PM

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