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
Navigation Bar End Cap


This probabilistic forecast is issued by the Colorado Basin River Forecast Center.
tab left off Hydrograph tab right off tab left off River at a Glance tab right off tab left off Download tab right off tab left on tab right on
About this graph
Forecasts for the Snake River (CO) near Montezuma are issued routinely year-round.
Return to Area Map

Zoom Level:11
Flood Categories (in feet)
Major Flood Stage: 5
Moderate Flood Stage: 4.5
Flood Stage: 3.8
Action Stage: 3.3
Low Stage (in feet): -9999

Historic Crests
(1) 3.88 ft on 06/06/1972
(2) 3.84 ft on 06/21/1983
(3) 3.78 ft on 06/15/1978
(4) 3.76 ft on 06/13/1973
(5) 3.71 ft on 06/21/1971
(6) 3.71 ft on 06/21/1995
(7) 3.67 ft on 06/11/1980
(8) 3.67 ft on 06/08/1985
(9) 3.60 ft on 06/17/1965
(10) 3.48 ft on 06/18/1974
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 2.67 ft on 06/06/2021
(2) 2.71 ft on 06/06/2020
(3) 3.01 ft on 06/13/2019
(4) 2.55 ft on 05/27/2018
(5) 3.02 ft on 06/10/2017
(6) 2.83 ft on 06/11/2016
(7) 3.12 ft on 06/11/2015
(8) 3.20 ft on 06/03/2014
(9) 2.76 ft on 06/08/2013
(10) 1.78 ft on 05/04/2012
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
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.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
5 Extensive flooding occurs from Montezuma through Keystone with major impacts to structures and roads along the river.
4.5 Montezuma road floods. Significant flooding of low lying properties is expected along the Snake River from Montezuma through Keystone.
3.8 Flooding begins to affect Keystone. These would be the highest flows on the Snake River since records began in the early 1940s.
3.5 The Snake River is out of its banks and into nearby fields.
(1) Looking Upstream
(2) Looking Downstream

Other Real-time and/or Archive Data Sources:

Additional Information Collapse
Observations provided by the U.S. Geological Survey in cooperation with Denver Water.
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
Ask Questions/Webmaster
Page last modified: 2-Nov-2020 7:28 PM
Privacy Policy
About Us
Career Opportunities