Skip Navigation Link  
NOAA logo - Click to go to the NOAA homepage National Weather Service NWS logo - Click to go to the NWS homepage
Advanced Hydrologic Prediction Service
Image background of Navigation bar Left
Bookmark and Share Navigation Bar End Cap

Hydrograph River at a Glance Download
Missouri River at the Garrison Dam Pool (ft)Observed: 1839.2 ft at 12:00AM Oct 19, 2020Observed: 1839.03 ft at 12:00AM Oct 20, 2020Highest Observation: 1839.23 ft at 12:00AM Oct 21, 2020Observed: 1839.05 ft at 12:00AM Oct 22, 2020Observed: 1839.22 ft at 12:00AM Oct 23, 2020Observed: 1839.11 ft at 12:00AM Oct 24, 2020Observed: 1839.18 ft at 12:00AM Oct 25, 2020Highest Observation: 1839.23 ft at 12:00AM Oct 26, 2020Observed: 1839.09 ft at 12:00AM Oct 27, 2020USGS--Water Resources of the United StatesGARN8(plotting HPIRZ) Graph Created (8:15AM Oct 28, 2020)ObservedLatest observed value: 1839.09 ft at 12:00 AM CDT 27-Oct-2020.
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
Datum: Not Available
NOTE: Forecasts are not available for the Missouri River at the Garrison Dam. Only observed stages are available for this point.
Return to Area Map
Upstream Gauge - near Williston Upstream Gauge Downstream Gauge Downstream Gauge - at Bismarck
Flood Categories (in feet)
Not Available

Historic Crests
(1) 1,854.80 ft on 07/25/1975
(2) 1,854.60 ft on 08/31/1975
(3) 1,854.60 ft on 07/01/2011
(4) 1,854.40 ft on 07/07/1997
(5) 1,853.70 ft on 06/30/1997
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 1,854.60 ft on 07/01/2011
(2) 1,817.80 ft on 07/17/2007
(3) 1,818.30 ft on 07/10/2007
(4) 1,817.84 ft on 07/17/2005
(5) 1,810.00 ft on 12/31/2004
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:14
KML Image
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.
About This Location Collapse

Latitude: 47.502778° N, Longitude: 101.430556° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft Not Available Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
(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  

Current/Historical Observations:

Resources Collapse
Hydrologic Resources Additional Resources
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
Bismarck Weather Forecast Office
2301 University Drive, Building 27
Bismarck, ND 58502-1016
(701) 250-4224
Ask Questions/Webmaster
Page last modified: 1-Mar-2019 12:34 AM
Privacy Policy
About Us
Career Opportunities